CN105018793B - Heat-resistant Ti alloy - Google Patents
Heat-resistant Ti alloy Download PDFInfo
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- CN105018793B CN105018793B CN201510542165.6A CN201510542165A CN105018793B CN 105018793 B CN105018793 B CN 105018793B CN 201510542165 A CN201510542165 A CN 201510542165A CN 105018793 B CN105018793 B CN 105018793B
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Abstract
The invention discloses a heat-resistant Ti alloy. The heat-resistant Ti alloy comprises components in percentage by mass as follows: 10.0%-12.0% of Al, 5.0%-6.0% of Nb, 3.0%-4.0% of Zr, 1.5%-2.5% of Mo, 1.5%-2.5% of Sn, 0.5%-1% of Ta, 0.2%-0.4% of Si, 0.04%-0.08% of C and the balance of Ti and inevitable impurities. The content of Al in the heat-resistant Ti alloy is between the content of Al in a traditional heat-resistant Ti alloy and the content of Al in a Ti-Al intermediate compound alloy, the usage temperature of the Ti alloy is increased by appropriately sacrificing plasticity of the traditional heat-resistant Ti alloy, and the heat-resistant Ti alloy has the good comprehensive performance and can meet requirements for long-term usage at the temperature of 650 DEG C.
Description
Technical field
The invention belongs to titanium materials technology field, and in particular to a kind of heat-resistant titanium alloy.
Background technology
The research of heat-resistant titanium alloy, is one of of paramount importance direction in titanium alloy field, and which is mainly for the manufacture of boat
The parts such as the diskware of the compressor and fan of empty electromotor, blade and casing, replace steel or high temperature alloy, relatively significantly can subtract
The weight of light electromotor, improves the thrust-weight ratio of electromotor.Two aspects are mainly included to heat-resistant titanium alloy research both at home and abroad,
One be Ti-Al-Sn-Zr-Mo-Si systems nearly α alloys, one is Ti-Al intermetallic alloy.With Ti-1100,
IMI834 and Ti60 alloys are the conventional Ti-Al-Sn-Zr-Mo-Si systems heat-resistant titanium alloy development at present more maturation of representative, its
Al constituent contents are usually no more than 7wt.%, and associated alloys are applied in aero-engine, but such alloy is current
Maximum operation (service) temperature is 600 DEG C, will be unable to meet use more than the heat resistance of 600 DEG C of alloys.Though Ti-Al intermediate compound alloys
So highest can be used at 700 DEG C, but as its Al content is very high, typically above 20wt.%, alloy have relatively low modeling
Property, poor processability, manufacturing cost are high.So there is no at present with substantially processing and performance advantage can be in 650 DEG C of conditions
The heat-resistant titanium alloy of lower life-time service.
The content of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, there is provided a kind of heat-resisting
Titanium alloy, aluminium content of the aluminium content in the heat-resistant titanium alloy in traditional heat-resistant titanium alloy and Ti-Al intermediate compounds are closed
Between aluminium content in gold, by the appropriate plasticity for sacrificing traditional heat-resistant titanium alloy, the use temperature of titanium alloy is improve, and should
Heat-resistant titanium alloy has good combination property, can meet the requirement of the life-time service under the conditions of 650 DEG C.
For solving above-mentioned technical problem, the technical solution used in the present invention is：A kind of heat-resistant titanium alloy, it is characterised in that
By following weight percentage into being grouped into：Al 10.0%～12.0%, Nb 5.0%～6.0%, Zr 3.0%～
4.0%, Mo 1.5%～2.5%, Sn 1.5%～2.5%, Ta 0.5%～1%, Si 0.2%～0.4%, C 0.04%
～0.08%, balance of Ti and inevitable impurity；Wherein, the weight percentage of Al for the weight percentage of Nb 2
Times, and the weight percentage of Al for Nb weight percentage, the weight percentage of Zr and Mo weight percentage it
1100MPa is not less than with, heat-resistant titanium alloy tensile strength at ambient temperature, elongation percentage is not less than 5.0%, described resistance to
Hot titanium alloy is that the tensile strength under the conditions of 650 DEG C is not less than 640MPa in temperature, and elongation percentage is not less than 15%, the heat-resisting titanium
Alloy is 150MPa in stress, and temperature is that the remaining deformation after keeping 100h under conditions of 650 DEG C is not more than 0.2%.
Above-mentioned a kind of heat-resistant titanium alloy, it is characterised in that by following weight percentage into being grouped into：Al
10.5%～11.5%, Nb 5.2%～5.8%, Zr 3.2%～3.7%, Mo 1.8%～2.2%, Sn 1.7%～
2.2%, Ta 0.6%～0.9%, Si 0.3%, C 0.05%～0.07%, balance of Ti and inevitable impurity.
Above-mentioned a kind of heat-resistant titanium alloy, it is characterised in that by following weight percentage into being grouped into：Al 10%,
Nb 5%, Zr 3%, Mo 2%, Sn 1.5%, Ta 0.5%, Si 0.2%, C 0.04%, balance of Ti and inevitably
Impurity.
Above-mentioned a kind of heat-resistant titanium alloy, it is characterised in that by following weight percentage into being grouped into：Al 12%,
Nb 6%, Zr 4%, Mo 2%, Sn 2.5%, Ta 1.0%, Si 0.4%, C 0.08%, balance of Ti and inevitably
Impurity.
Above-mentioned a kind of heat-resistant titanium alloy, it is characterised in that by following weight percentage into being grouped into：Al 11%,
Nb 5.5%, Zr 3.5%, Mo 2%, Sn 2.0%, Ta 0.75%, Si 0.3%, C 0.06%, balance of Ti and can not
The impurity for avoiding.
The present invention has advantages below compared with prior art：
1st, change in the middle of aluminium content and Ti-Al of the aluminium content in heat-resistant titanium alloy of the present invention in traditional heat-resistant titanium alloy
Between aluminium content in compound alloy, by the appropriate plasticity for sacrificing traditional heat-resistant titanium alloy, improve titanium alloy uses temperature
Degree, and the heat-resistant titanium alloy has good combination property, can meet the requirement of the life-time service under the conditions of 650 DEG C.
2nd, relative to traditional Ti-Al-Sn-Zr-Mo-Si systems heat-resistant titanium alloy, the heat-resistant titanium alloy of the present invention is suitably carried
The high content of Al elements, raisings of Al constituent contents can improve the transformation temperature of titanium alloy, reduce the content of remnants β phases, drop
Diffusion in low titanium alloy high-temp creep process, improves the high-temperature creep resistance of titanium alloy；Meanwhile, Al constituent contents are carried
It is high so that under hot conditionss, to generate more Al for having and stablizing protective effect in titanium alloy surface2O3Protecting film, improves heat-resisting
The surface oxidation-resistant of titanium alloy.Although the raising of Al constituent contents, more Ti may be generated3Al ordered phases, reduce titanium and close
The plasticity of gold, but in the present invention can be with effective control Ti in Al element content ranges3The formation of Al ordered phases so as to unfavorable shadow
Sound is effectively controlled, and in combination with the toughening effect of other elements, titanium alloy can be made to have preferable plasticity, if Al is first
Cellulose content is higher by the content range in the present invention, and the plasticity of titanium alloy will be drastically reduced.
3rd, Nb, Zr and Mo are added in heat-resistant titanium alloy of the present invention, these three elements add according to the design proportioning in the present invention
Be added in titanium alloy, not only with preferable solid solution strengthening effect, and can effectively tough alloy so that due to Al elements compared with
It is high and generate Ti3The adverse effect of Al ordered phases is reduced to controllable degree, so that heat-resistant titanium alloy obtains preferable intensity, modeling
The matching of property and high-temperature behavior.
4th, add the effect that Sn and Ta primarily serves solution strengthening in the present invention, have which according to the design proportioning of the present invention
There is more preferable solid solution strengthening effect, while the Si elements of the specific proportioning of addition can be very good to ensure that the high temperature of heat-resistant titanium alloy is compacted
Become performance.
5th, in the present invention, the addition of C element can increase the temperature range of the alpha+beta two-phase section in heat-resistant titanium alloy, and increase is closed
The processing temperature window of gold, the content of control primary alpha phase that can be relatively easy, further by heat treatment, it is possible to obtain tool
There is a line and staff control of 15%～25% primary alpha phase, the thermal stability of effective coordination titanium alloy, croop property and fatigue behaviour,
Improve the comprehensive mechanical property of heat-resistant titanium alloy.
In heat-resistant titanium alloy of the present invention, the content of α phases is volumn concentration.
Below by drawings and Examples, technical scheme is described in further detail.
Description of the drawings
Fig. 1 is the micro-organization chart of heat-resistant titanium alloy prepared by the embodiment of the present invention 1.
Fig. 2 is the micro-organization chart of heat-resistant titanium alloy prepared by the embodiment of the present invention 2.
Fig. 3 is the micro-organization chart of heat-resistant titanium alloy prepared by the embodiment of the present invention 3.
Fig. 4 is the micro-organization chart of heat-resistant titanium alloy prepared by the embodiment of the present invention 4.
Specific embodiment
Heat-resistant titanium alloy of the present invention is by following weight percentage into being grouped into：Al 10.0%～12.0%, Nb
5.0%～6.0%, Zr 3.0%～4.0%, Mo 1.5%～2.5%, Sn 1.5%～2.5%, Ta 0.5%～1%, Si
0.2%～0.4%, C 0.04%～0.08%, balance of Ti and inevitable impurity, wherein, the weight percentage of Al
For 2 times of the weight percentage of Nb, the weight percentage of Al is the weight percentage of Nb, the weight percentage of Zr and
The weight percentage sum of Mo.
The raw material adopted by preparation heat-resistant titanium alloy of the present invention includes Al-Mo intermediate alloys, Al-Nb intermediate alloys, Al-Sn
Intermediate alloy, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge.
The preparation process of heat-resistant titanium alloy of the present invention is：After above-mentioned raw materials are mixed, compacting obtains electrode, electrode Jing vacuum
Consumable arc-melting prepares alloy cast ingot, and alloy cast ingot is forged in hydraulic pressure after surface strips off the skin and cuts rising head and tail end
Make, then rolled on hot-rolling mill
System, then heat-resistant titanium alloy is obtained Jing after solution treatment and Ageing Treatment.The heating-up temperature of cogging forging is 1150 DEG C～
1250 DEG C, the forging temperature of fire time high temperature forging more is 1000 DEG C～1100 DEG C, and the temperature of the rolling is 1000 DEG C～1100
DEG C, the cogging is forged and is per the fire time high temperature forging two piers two and pulls out forging, and the temperature of the solution treatment is 1000
DEG C～1050 DEG C, temperature retention time is 2h～3h, and the temperature of Ageing Treatment is 700 DEG C～750 DEG C, temperature retention time be 2.5h～
4.5h.Heat-resistant titanium alloy of the present invention tensile strength at ambient temperature is not less than 1100MPa, and elongation percentage is not less than 5.0%, institute
It is that the tensile strength under the conditions of 650 DEG C is not less than 640MPa that heat-resistant titanium alloy is stated in temperature, and elongation percentage is not less than 15%, described resistance to
Hot titanium alloy is 150MPa in stress, and temperature is that the remaining deformation after keeping 100h under conditions of 650 DEG C is not more than 0.2%,
Match with high-temperature behavior with good room-temperature property.
Embodiment 1
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 10.0%, Nb 5.0%, Zr
3.0%, Mo 2.0%, Sn 1.5%, Ta 0.5%, Si 0.2%, C 0.04%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on hydrostatic forging machine, then in hot rolling
Rolled on machine, then obtained the heat-resistant titanium alloy bar that cross section is circle Jing after solution treatment and Ageing Treatment, it is described resistance to
The cross-sectional diameter of hot titanium alloy rod bar is 14mm.The heating-up temperature of the cogging forging is 1150 DEG C, 2 fire time high temperature forgings
Forging temperature is 1000 DEG C, and the temperature of the rolling is 1000 DEG C, and the cogging forging and every fire time high temperature forging are
Two piers two pull out forging；The temperature of the solution treatment is 1000 DEG C, and temperature retention time is 2h, and the temperature of the Ageing Treatment is 700
DEG C, temperature retention time is 2.5h.
From figure 1 it appears that heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, primary alpha phase content
About 28%, structural homogenity is good；The present embodiment heat-resistant titanium alloy bar is Jing after solution treatment and Ageing Treatment in room temperature condition
Under tensile strength be 1135MPa, elongation percentage is 6.5%, tension of the heat-resistant titanium alloy bar under the conditions of temperature is 650 DEG C
Intensity is 650MPa, and elongation percentage is 24%, and the heat-resistant titanium alloy bar is 150MPa in stress, under conditions of temperature is 650 DEG C
Keep the remaining deformation after 100h to be 0.166%, illustrate that the heat-resistant titanium alloy has good room-temperature property and high-temperature behavior
Matching.
Embodiment 2
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 11.0%, Nb 5.5%, Zr
3.5%, Mo 2.0%, Sn 2.0%, Ta 0.75%, Si 0.3%, C 0.06%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on hydrostatic forging machine, then in hot rolling
Rolled on machine, then obtained the heat-resistant titanium alloy bar that cross section is circle Jing after solution treatment and Ageing Treatment, it is described resistance to
The cross-sectional diameter of hot titanium alloy rod bar is 13mm.The heating-up temperature of the cogging forging is 1200 DEG C, 2 fire time high temperature forgings
Forging temperature is 1050 DEG C, and the temperature of the rolling is 1050 DEG C, and the cogging forging and every fire time high temperature forging are
Two piers two pull out forging；The temperature of the solution treatment is 1050 DEG C, and temperature retention time is 2.5h, and the temperature of the Ageing Treatment is
725 DEG C, temperature retention time is 3.5h.
From figure 2 it can be seen that heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, primary alpha phase content
About 22%, structural homogenity is good；The present embodiment heat-resistant titanium alloy bar is Jing after solution treatment and Ageing Treatment in room temperature condition
Under tensile strength be 1160MPa, elongation percentage is 6.0%, tension of the heat-resistant titanium alloy bar under the conditions of temperature is 650 DEG C
Intensity is 660MPa, and elongation percentage is 20%, and the heat-resistant titanium alloy bar is 150MPa in stress, under conditions of temperature is 650 DEG C
Keep the remaining deformation after 100h to be 0.158%, illustrate that the heat-resistant titanium alloy has good room-temperature property and high-temperature behavior
Matching.
Embodiment 3
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 12.0%, Nb 6.0%, Zr
4.0%, Mo 2.0%, Sn 2.5%, Ta 1.0%, Si 0.4%, C 0.08%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on forging hammer, it is then enterprising in hot-rolling mill
Row rolling, then the heat-resistant titanium alloy bar that cross section is circle is obtained Jing after solution treatment and Ageing Treatment, the heat-resisting titanium is closed
The cross-sectional diameter of golden bar is 14mm.The heating-up temperature of the cogging forging is 1250 DEG C, the forging temperature of 2 fire time high temperature forgings
Spend for 1100 DEG C, the temperature of the rolling is 1100 DEG C, the cogging forging and every fire time high temperature forging are two piers two
Pull out forging；The temperature of the solution treatment is 1050 DEG C, and temperature retention time is 3.0h, and the temperature of the Ageing Treatment is 750 DEG C, is protected
The warm time is 4.5h.
From figure 3, it can be seen that heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, primary alpha phase content
About 22%, structural homogenity is good；The present embodiment heat-resistant titanium alloy bar is Jing after solution treatment and Ageing Treatment in room temperature condition
Under tensile strength be 1185MPa, elongation percentage is 5.5%, tension of the heat-resistant titanium alloy bar under the conditions of temperature is 650 DEG C
Intensity is 675MPa, and elongation percentage is 18%, and the heat-resistant titanium alloy bar is 150MPa in stress, under conditions of temperature is 650 DEG C
Keep the remaining deformation after 100h to be 0.137%, illustrate that the heat-resistant titanium alloy has good room-temperature property and high-temperature behavior
Matching.
Embodiment 4
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 10.5%, Nb 5.5%, Zr
3.2%, Mo 1.8%, Sn 2.2%, Ta 0.9%, Si 0.3%, C 0.07%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on forging hammer, it is then enterprising in hot-rolling mill
Row rolling, then the heat-resistant titanium alloy bar that cross section is circle is obtained Jing after solution treatment and Ageing Treatment, the heat-resisting titanium is closed
The cross-sectional diameter of golden bar is 12mm.The heating-up temperature of the cogging forging is 1170 DEG C, the forging temperature of 2 fire time high temperature forgings
Spend for 1050 DEG C, the temperature of the rolling is 1070 DEG C, the cogging forging and every fire time high temperature forging are two piers two
Pull out forging；The temperature of the solution treatment is 1010 DEG C, and temperature retention time is 2.5h, and the temperature of the Ageing Treatment is 750 DEG C, is protected
The warm time is 4h.
Figure 4, it is seen that heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, primary alpha phase content
About 30%, structural homogenity is good；The present embodiment heat-resistant titanium alloy bar is Jing after solution treatment and Ageing Treatment in room temperature condition
Under tensile strength be 1170MPa, elongation percentage is 6.0%, tension of the heat-resistant titanium alloy bar under the conditions of temperature is 650 DEG C
Intensity is 670MPa, and elongation percentage is 18%, and the heat-resistant titanium alloy bar is 150MPa in stress, under conditions of temperature is 650 DEG C
Keep the remaining deformation after 100h to be 0.145%, illustrate that the heat-resistant titanium alloy has good room-temperature property and high-temperature behavior
Matching.
Embodiment 5
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 11.5%, Nb 5.6%, Zr
3.7%, Mo 2.2%, Sn 1.7%, Ta 0.6%, Si 0.3%, C 0.05%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on hydrostatic forging machine, then in hot rolling
Rolled on machine, then obtained the heat-resistant titanium alloy bar that cross section is circle Jing after solution treatment and Ageing Treatment, it is described resistance to
The cross-sectional diameter of hot titanium alloy rod bar is 16mm.The heating-up temperature of the cogging forging is 1200 DEG C, 2 fire time high temperature forgings
Forging temperature is 1070 DEG C, and the temperature of the rolling is 1030 DEG C, and the cogging forging and every fire time high temperature forging are
Two piers two pull out forging；The temperature of the solution treatment is 1040 DEG C, and temperature retention time is 2.8h, and the temperature of the Ageing Treatment is
700 DEG C, temperature retention time is 4.5h.
Heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, and structural homogenity is good；The heat-resisting titanium of the present embodiment
Tensile strength of the alloy bar material Jing after solution treatment and Ageing Treatment at ambient temperature is 1180MPa, and elongation percentage is 5.5%,
The heat-resistant titanium alloy bar temperature be the tensile strength under the conditions of 650 DEG C be 670MPa, elongation percentage is 16.5%, the heat-resisting titanium
Alloy bar material is 150MPa in stress, and it is 0.165% that temperature is the remaining deformation after keeping 100h under conditions of 650 DEG C, is said
There is the bright heat-resistant titanium alloy good room-temperature property to be matched with high-temperature behavior.
Embodiment 6
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 11%, Nb 5.2%, Zr
3.3%, Mo 2.5%, Sn 2.0%, Ta 0.7%, Si 0.3%, C 0.06%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on hydrostatic forging machine, then in hot rolling
Rolled on machine, then obtained the heat-resistant titanium alloy bar that cross section is circle Jing after solution treatment and Ageing Treatment, it is described resistance to
The cross-sectional diameter of hot titanium alloy rod bar is 14mm.The heating-up temperature of the cogging forging is 1250 DEG C, 2 fire time high temperature forgings
Forging temperature is 1100 DEG C, and the temperature of the rolling is 1100 DEG C, and the cogging forging and every fire time high temperature forging are
Two piers two pull out forging；The temperature of the solution treatment is 1000 DEG C, and temperature retention time is 3h, and the temperature of the Ageing Treatment is 750
DEG C, temperature retention time is 2.5h.
Heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, and structural homogenity is good；The heat-resisting titanium of the present embodiment
Tensile strength of the alloy bar material Jing after solution treatment and Ageing Treatment at ambient temperature is 1150MPa, and elongation percentage is 6%, should
Heat-resistant titanium alloy bar temperature be the tensile strength under the conditions of 650 DEG C be 670MPa, elongation percentage is 15.5%, and the heat-resisting titanium is closed
Golden bar is 150MPa in stress, and it is 0.155% that temperature is the remaining deformation after keeping 100h under conditions of 650 DEG C, explanation
There is the heat-resistant titanium alloy good room-temperature property to be matched with high-temperature behavior.
Embodiment 7
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 11%, Nb 5.8%, Zr
3.7%, Mo 1.5%, Sn 2.0%, Ta 0.8%, Si 0.3%, C 0.06%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on forging hammer, it is then enterprising in hot-rolling mill
Row rolling, then the heat-resistant titanium alloy bar that cross section is circle is obtained Jing after solution treatment and Ageing Treatment, the heat-resisting titanium is closed
The cross-sectional diameter of golden bar is 16mm.The heating-up temperature of the cogging forging is 1150 DEG C, the forging temperature of 2 fire time high temperature forgings
Spend for 1100 DEG C, the temperature of the rolling is 1050 DEG C, the cogging forging and every fire time high temperature forging are two piers two
Pull out forging；The temperature of the solution treatment is 1020 DEG C, and temperature retention time is 2.5h, and the temperature of the Ageing Treatment is 730 DEG C, is protected
The warm time is 3.5h.
Heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, and structural homogenity is good；The heat-resisting titanium of the present embodiment
Tensile strength of the alloy bar material Jing after solution treatment and Ageing Treatment at ambient temperature is 1145MPa, and elongation percentage is 5.5%,
The heat-resistant titanium alloy bar temperature be the tensile strength under the conditions of 650 DEG C be 645MPa, elongation percentage is 17.5%, the heat-resisting titanium
Alloy bar material is 150MPa in stress, and it is 0.135% that temperature is the remaining deformation after keeping 100h under conditions of 650 DEG C, is said
There is the bright heat-resistant titanium alloy good room-temperature property to be matched with high-temperature behavior.
Embodiment 8
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 11%, Nb 5.2%, Zr
3.7%, Mo 2.1%, Sn 2.0%, Ta 0.8%, Si 0.3%, C 0.06%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on hydrostatic forging machine, then in hot rolling
Rolled on machine, then obtained the heat-resistant titanium alloy bar that cross section is circle Jing after solution treatment and Ageing Treatment, it is described resistance to
The cross-sectional diameter of hot titanium alloy rod bar is 14mm.The heating-up temperature of the cogging forging is 1160 DEG C, 2 fire time high temperature forgings
Forging temperature is 1050 DEG C, and the temperature of the rolling is 1050 DEG C, and the cogging forging and every fire time high temperature forging are
Two piers two pull out forging；The temperature of the solution treatment is 1000 DEG C, and temperature retention time is 3h, and the temperature of the Ageing Treatment is 700
DEG C, temperature retention time is 3h.
Heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, and structural homogenity is good；The heat-resisting titanium of the present embodiment
Tensile strength of the alloy bar material Jing after solution treatment and Ageing Treatment at ambient temperature is 1155MPa, and elongation percentage is 5.9%,
The heat-resistant titanium alloy bar temperature be the tensile strength under the conditions of 650 DEG C be 671MPa, elongation percentage is 15.4%, the heat-resisting titanium
Alloy bar material is 150MPa in stress, and it is 0.153% that temperature is the remaining deformation after keeping 100h under conditions of 650 DEG C, is said
There is the bright heat-resistant titanium alloy good room-temperature property to be matched with high-temperature behavior.
Embodiment 9
The present embodiment heat-resistant titanium alloy, by following weight percentage into being grouped into：Al 11%, Nb 5.8%, Zr
3.2%, Mo2%, Sn 2.0%, Ta 0.8%, Si 0.3%, C 0.07%, balance of Ti and inevitable impurity.
The preparation method of the present embodiment heat-resistant titanium alloy is：Raw material using Al-Mo intermediate alloys, Al-Nb intermediate alloys,
Al-Sn intermediate alloys, sponge zirconium, pure tantalum powder (quality purity is not less than 99.7%), aluminium shot and 0 grade of titanium sponge, by above-mentioned raw materials
After mix homogeneously, compacting obtains electrode, and electrode Jing vacuum consumable arc-meltings prepare alloy cast ingot, and alloy cast ingot is through table
After face strips off the skin and cuts rising head and tail end, cogging forging and 2 fire time high temperature forgings are carried out on hydrostatic forging machine, then in hot rolling
Rolled on machine, then obtained the heat-resistant titanium alloy bar that cross section is circle Jing after solution treatment and Ageing Treatment, it is described resistance to
The cross-sectional diameter of hot titanium alloy rod bar is 16mm.The heating-up temperature of the cogging forging is 1250 DEG C, 2 fire time high temperature forgings
Forging temperature is 1100 DEG C, and the temperature of the rolling is 1100 DEG C, and the cogging forging and every fire time high temperature forging are
Two piers two pull out forging；The temperature of the solution treatment is 1030 DEG C, and temperature retention time is 2h, and the temperature of the Ageing Treatment is 700
DEG C, temperature retention time is 4.5h.
Heat-resistant titanium alloy manufactured in the present embodiment is organized for typical bifurcation, and structural homogenity is good；The heat-resisting titanium of the present embodiment
Tensile strength of the alloy bar material Jing after solution treatment and Ageing Treatment at ambient temperature is 1147MPa, and elongation percentage is 5.2%,
The heat-resistant titanium alloy bar temperature be the tensile strength under the conditions of 650 DEG C be 640MPa, elongation percentage is 17.1%, the heat-resisting titanium
Alloy bar material is 150MPa in stress, and it is 0.136% that temperature is the remaining deformation after keeping 100h under conditions of 650 DEG C, is said
There is the bright heat-resistant titanium alloy good room-temperature property to be matched with high-temperature behavior.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (5)
1. a kind of heat-resistant titanium alloy, it is characterised in that by following weight percentage into being grouped into：Al 10.0%～
12.0%, Nb 5.0%～6.0%, Zr 3.0%～4.0%, Mo 1.5%～2.5%, Sn 1.5%～2.5%, Ta
0.5%～1%, Si 0.2%～0.4%, C 0.04%～0.08%, balance of Ti and inevitable impurity；Wherein, Al
Weight percentage be 2 times of weight percentage of Nb, and the weight percentage of Al is weight percentage, the Zr of Nb
Weight percentage and Mo weight percentage sum, heat-resistant titanium alloy tensile strength at ambient temperature is low
In 1100MPa, elongation percentage is not less than 5.0%, and the heat-resistant titanium alloy is that the tensile strength under the conditions of 650 DEG C is not less than in temperature
640MPa, elongation percentage are not less than 15%, and the heat-resistant titanium alloy is 150MPa in stress, and temperature is holding under conditions of 650 DEG C
Remaining deformation after 100h is not more than 0.2%.
2. according to a kind of heat-resistant titanium alloy described in claim 1, it is characterised in that by following weight percentage into packet
Into：Al 10.5%～11.5%, Nb 5.2%～5.8%, Zr 3.2%～3.7%, Mo 1.8%～2.2%, Sn 1.7%
～2.2%, Ta 0.6%～0.9%, Si 0.3%, C 0.05%～0.07%, balance of Ti and inevitable impurity.
3. according to a kind of heat-resistant titanium alloy described in claim 1, it is characterised in that by following weight percentage into packet
Into：Al 10%, Nb 5%, Zr 3%, Mo 2%, Sn 1.5%, Ta 0.5%, Si 0.2%, C 0.04%, balance of Ti
With inevitable impurity.
4. according to a kind of heat-resistant titanium alloy described in claim 1, it is characterised in that by following weight percentage into packet
Into：Al 12%, Nb 6%, Zr 4%, Mo 2%, Sn 2.5%, Ta 1.0%, Si 0.4%, C 0.08%, balance of Ti
With inevitable impurity.
5. according to a kind of heat-resistant titanium alloy described in claim 2, it is characterised in that by following weight percentage into packet
Into：Al 11%, Nb 5.5%, Zr 3.5%, Mo 2%, Sn 2.0%, Ta 0.75%, Si 0.3%, C 0.06%, surplus
For Ti and inevitable impurity.
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