CN101994016B - Titanium-aluminum alloy material and preparation method thereof - Google Patents
Titanium-aluminum alloy material and preparation method thereof Download PDFInfo
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- CN101994016B CN101994016B CN 200910091221 CN200910091221A CN101994016B CN 101994016 B CN101994016 B CN 101994016B CN 200910091221 CN200910091221 CN 200910091221 CN 200910091221 A CN200910091221 A CN 200910091221A CN 101994016 B CN101994016 B CN 101994016B
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Abstract
The invention relates to a method for preparing an alloy material, which is characterized by comprising the following steps of: forming a laminated layer (101, 501) comprising titanium foils (102) and aluminum foils (103) which are alternately laminated; and heating the laminated layer (101, 501) to a temperature above the melting point of aluminum and performing heat treatment. The formed titanium-aluminum alloy material is provided with a novel alternate micro laminated layer of a TiAl (gamma) layer and a Ti3Al (alpha2) layer. An alternate micro laminated layer structure comprises an optimal two-phase component, two-phase structure or two-phase alloy which is acknowledged in the prior art; the extension range of each layer in the alternate micro laminated layer is equivalent to that of the titanium foils or the aluminum foils before the heat treatment; the spatial period of the alternate laminated layer is basically equivalent to that of the titanium foils and the aluminum foils which are alternately laminated in the laminated layer (101, 501) before the heat treatment; and the structural parameters of the alternate micro laminated layer can be controlled and include (but are not limited to) the thickness of the TiAl (gamma) layer, the thickness of the Ti3Al (alpha2) layer, and/or the spatial period of the alternate laminated layer of the TiAl (gamma) layer and the Ti3Al (alpha2) layer, and the like.
Description
Background technology
Ti-Al alloy is the highest alloy material of present strength/weight ratio, but the making of the making of Ti-Al alloy material, especially its section bar is still the problem that perplexs industry so far.The people in the industry is seeking the titanium aluminum alloy making method of facility, effective, suitable particular application always.
Paper " Processing near gamma-basedtitanium-aluminum by cold roll bonding and diffusion reaction ofelemental titanium and aluminum foils " (the UMI Microform 3027364.Bell﹠amp that delivers in calendar year 2001 at JIAN-GUO LUO; Howell Information and Learning Company, 300North Zeeb Road, P.O.Box1346, Ann Arbor, MI48106-1346) in, announced a kind of titanium aluminum alloy preparation method, comprise the following steps of carrying out successively:
-preparation comprises a lamination that replaces stacked titanium foil and aluminium foil,
-titanium skin of coating outside this lamination,
-carry out first anneal, wherein this is had the outer field lamination of titanium and be heated to temperature (650 ℃) a little less than aluminium fusing point (660 ℃),
This has the outer field lamination of titanium the roll compacting of-repetitiousness,
-carry out second anneal, this is had the outer field lamination of titanium be heated to temperature (900 ℃ and/or 1350 ℃) above the aluminium fusing point,
This has the outer field lamination of titanium the roll compacting of-repetitiousness.
Form TiAl alloy (seeing the explanation of document Figure 5-22, Figure 5-28 and Figure 5-29 and related text) at last.
A key of this technology, avoid occurring sample (part) fusing in twice annealing is handled: the temperature of first anneal is lower than the fusing point of aluminium, and second anneal at first the aluminium in the sample fully and titanium react, generated TiAl
3-Ti
xAl
y-Ti complex body is seen document Figure 5-15 and Table5-5 and related text explanation.The fusing point of this complex body each several part is higher than the relevant temperature (900 ℃ and/or 1350 ℃) of second anneal.That is, in the technological process that the document discloses, avoided the appearance of sample (part) liquid phase, rolling and diffusion process is carried out under solid phase all the time.
At 9-10 page or leaf and Fig. 2-4 (a)-(f) thereof of this paper, introduced the microstructure of six kinds of Ti-Al alloy phases that may occur, shown in Fig. 8 (a)-Fig. 8 (f) of this specification sheets, that is:
(1) single-phase TiAl (γ) particle, it constitutes (Fig. 8 (a)) by TiAl (γ) particle fully;
(2) dual structure, it comprises single-phase TiAl (γ) particle and the Ti that mixes
3Al-TiAl (α
2/ γ) lamella particle (Fig. 8 (b));
(3) full Ti
3Al-TiAl (α
2/ γ) lamella particle, it is fully by Ti
3Al-TiAl (α
2/ γ) the lamella particle constitutes (Fig. 8 (c));
(4) nearly complete single-phase TiAl (γ) particle, it almost completely is made of TiAl (γ) particle, but very a spot of Ti is arranged
3Al-TiAl (α
2/ γ) lamella particle (Fig. 8 (d));
(5) nearly full Ti
3Al-TiAl (α
2/ γ) lamella particle, it is almost completely by Ti
3Al-TiAl (α
2/ γ) the lamella particle constitutes, but very a spot of single-phase TiAl (γ) particle (Fig. 8 (e)) is arranged;
(6) double structure, it comprises TiAl (γ) particle and the Ti that mixes
3Al (α
2) particle (Fig. 8 (f)).
Wherein, it should be noted that TiAl-Ti
3Al (α
2/ γ) lamella particle, this particle is by the TiAl that replaces (γ) lamella and Ti
3Al (α
2) the lamella formation.This TiAl and Ti
3The alternately lamella of Al is confined within the individual particle; According to the description of the 9th page of inverse of the document the 5th row, the size of these particles " usually greater than 300 microns ".
Fig. 5 of the document-28 (b) and 5-29 (b) have shown its Ti
3Al-TiAl (α
2/ γ) the details of laminated structure; Yardstick from Fig. 5-29 (b) can be extrapolated Ti in this lamella
3Al (α
2) layer is about 2 microns with the space periodic that TiAl (γ) layer replaces.
The 11st page 4-5 is capable points out for the document, " because the intensity of single-phased alloy is lower, two phase alloys have maximum construction value ".
Chinese patent application No. 200710071716.0 " the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling-diffusion " has been announced the preparation method of a kind of titanium alloy/TiAl alloy composite plate material, and it comprises step successively:
-lamination that titanium foil and aluminium foil replace stacked formation is set, add one deck titanium or titanium alloy sheet or paper tinsel at least in the lamination;
-lamination is put into a metal jacket;
-being evacuated in the jacket less than 1Pa, then jacket is sealed;
-lamination in the jacket is placed 20 ℃-750 ℃, be incubated 5-40 minute, carry out then " low temperature rolling ";
-lamination in the jacket is heated to 750 ℃-1300 ℃, be incubated 5-40 minute, carry out again " high temperature rolling ".
The key that No. the 200710071716.0th, Chinese patent application is the temperature that (comprises said in the document " low temperature rolling " and " high temperature rolling ") in the operation of rolling.Especially 20 of its " low temperature rolling " ℃ of-750 ℃ of temperature ranges are very large temperature ranges, according to the phasor among Fig. 2-3 of the document of aforementioned JIAN-GUO LUO, may cause a lot of possible compositions as a result in the big like this temperature range, and the composition of the product that processing scheme that comprises such temperature range is not obtained in No. the 200710071716.0th, the Chinese patent application is done any corresponding disclosure.
A Xiang Guan serious uncertain factor is therewith, the fusing point of aluminium is 660 ℃, therefore 20 ℃-750 ℃ the temperature range of so-called " low temperature rolling " is not a simple scope in the document, but this key temperatures value of fusing point of having crossed over aluminium, and " low temperature rolling " actually or temperature the fusing point of aluminium more than 660 ℃ the consequence below 660 ℃ be distinct.
So further a key of being correlated with is that whether some material (especially aluminium) is in liquid phase in the lamination.
By the description of the document, the heat-processed that liquid phase may occur has:
1) the capable description about " embodiment one " of its Instructions Page 3 5-6: " integral material is put into process furnace be heated to 20-750 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly "; Corresponding initial titanium foil is thick to be 0.02-0.3mm, and aluminium foil is thick to be 0.02-0.3mm (page 2 countdown line 3-inverse the 2nd row);
2) the capable description about " embodiment two " of its Instructions Page 3 21-22; " again through 950 ℃ of high temperature rollings, integral material is put into process furnace be heated to 950 ℃, and be incubated 25 minutes, put into the milling train open rolling then rapidly "; Corresponding initial titanium foil is thick to be 0.05mm, and aluminium foil is thick to be 0.05mm (page 3 the 14th row);
3) the capable description about " embodiment three " of its specification sheets page 4 5-6 " again through 1000 ℃ of high temperature rollings, is put into process furnace with integral material and is heated to 1000 ℃, and be incubated 30 minutes, put into the milling train open rolling then rapidly "; Corresponding initial titanium foil is thick to be 0.07mm, and aluminium foil is thick to be 0.07mm (page 3 the 4th row-countdown line 3 reciprocal)
May occur in the heat-up time of liquid phase at these, the aluminium major part in the aluminium foil of thickness all has little time and titanium reaction like this, some liquid phase aluminium at least in subsequently rolling.The lamination that comprises liquid phase aluminium in the jacket is rolled meeting produces the consequence that is difficult to expect, liquid phase aluminium can be squeezed away easily, like this, even jacket enough firmly and not can be rolled brokenly, the original lamination of aluminium and titanium distributes and distributing homogeneity also can be destroyed, and the aluminium that is squeezed away displacement can't be in the process period of reality and titanium/titanium alloy react fully, and the displacement of liquid phase aluminium also makes and is difficult to reaction and/or the diffusion of aluminium and titanium/titanium alloy are controlled.As a result, composition and/or the size to the finished product can't control effectively.
Because aluminium is oxidation easily at high temperature, so the high-temperature heat treatment of liquid phase aluminium need be carried out under vacuum or reducing environment.Another major defect that No. the 200710071716.0th, above-mentioned Chinese patent application is that it requires to adopt vacuum-packed jacket, and this jacket needs to tolerate the operation of rolling repeatedly and keeps sealing.This is a very high processing requirement.
Summary of the invention
The inventor explores and test by further investigation, has produced a kind of TiAl-Ti of having
3The Ti-Al alloy of Al composite structure, this TiAl-Ti
3The microstructure of Al composite structure alloy is different from any in above-mentioned six kinds of Ti-Al alloy phase microstructures that may occur of prior art.
According to an aspect of the present invention, provide a kind of making method of Ti-Al alloy material, it is characterized in that comprising:
Formation comprises and replaces stacked titanium foil and the lamination of aluminium foil;
Described lamination is heated to the above temperature of fusing point of aluminium, heat-treats.
According to another aspect of the present invention, use according to aforesaid method of the present invention, produced a kind of TiAl of having (γ)-Ti
3Al (α
2) Ti-Al alloy of composite structure, it has TiAl (γ) layer and Ti
3Al (α
2) layer replace little lamination, this little lamination that replaces of the present invention:
-be the little lamination of replacing of a kind of globality, its TiAl (γ) layer and Ti
3The expanded range that the Al layer replaces little lamination is macroscopical (especially can reach the entire area that thermal treatment begins preceding titanium foil and aluminium foil lamination), rather than is confined to the TiAl-Ti in the crystal grain in the prior art
3The Al lamella;
-its TiAl layer and Ti
3The space periodic that titanium foil and aluminium foil replace in the lamination before the space periodic of Al layer alternative stacked and thermal treatment begin is suitable.Like this, can pass through to adjust the titanium foil-aluminium foil space periodic of initial laminate, and the last TiAl layer-Ti that forms of control
3The space periodic of Al layer alternative stacked.
According to another embodiment of the invention, aforesaid method further comprises: improve the step of the compactness extent of described lamination, include but not limited to:
By the described lamination of roll roll compacting;
Use such as the device of the ring rolls described lamination to web-like and roll;
Beat described lamination.
According to an embodiment more specifically of the present invention, aforesaid method further comprises:
Before carrying out described thermal treatment, described lamination is placed a metal-coating, wherein this metallic sheath preferably is made of titanium;
By roll this lamination is involved in capable roll compacting.
According to another aspect of the present invention, provide a kind of Ti-Al alloy material, it is characterized in that described Ti-Al alloy material makes with aforesaid method of the present invention, and described Ti-Al alloy material has comprised TiAl layer and Ti
3The Al layer replaces little lamination, thisly replaces little lamination:
-be a kind of alternative stacked of globality, its TiAl layer and Ti
3The expanded range of Al layer alternative stacked is macroscopical (especially can reach the entire area of initial titanium foil and aluminium foil lamination), rather than is confined to the TiAl-Ti in the particle in the prior art
3The Al lamella;
-its TiAl layer and Ti
3The space periodic that titanium foil and aluminium foil replace in the lamination before the space periodic of Al layer alternative stacked and the thermal treatment is suitable.
This little rhythmo structure itself that replaces according to the present invention has just comprised generally acknowledged preferred " two phase compositions " and/or " two phase structure " and/or " two phase alloys " in the prior art; On the one hand, this every layer the scope that replaces in little lamination can reach the scope (not being confined to " lamella " of the prior art in the crystal grain and do not resemble) of initial aluminium foil/titanium foil; On the other hand, the space periodic that replaces stacked described titanium foil and described aluminium foil before the space periodic that replaces along the normal direction of layer of described little lamination and thermal treatment begin in the described lamination is suitable substantially.
Description of drawings
Fig. 1 is used for the signal demonstration according to an embodiment of the method for making alloy material of the present invention.
Fig. 2 is used for a kind of roll compacting process that signal shows embodiments of the invention shown in Figure 1.
Fig. 3 is used for the sectional view that signal shows a further embodiment of the present invention shown in Figure 1.
Fig. 4 is used for the lamination that signal shows the band outer cover that process according to an embodiment of the invention is rolling.
Fig. 5 is used for signal and shows according to a further embodiment of the present invention.
Fig. 6 is used for signal and shows according to a further embodiment of the present invention.
Fig. 7 has shown the backscattered electron Photomicrograph of the Ti-Al alloy material made from method according to an embodiment of the invention, has demonstrated TiAl layer-Ti that this material has
3Al layer alternate laminated structure.
Fig. 8 (a)-Fig. 8 (f) signal has shown the structure of Ti-Al alloy described in the prior.
Fig. 9 A-9C signal has shown that titanium foil in the embodiments of the invention 1-aluminium foil lamination (volume) manages the situation in stage throughout.
Embodiment
Fig. 1 illustrates to have shown according to one embodiment of present invention, and wherein, it is stacked at first titanium foil 102 and aluminium foil 103 alternately to be tiled, and forms by replacing the lamination 101 that stacked titanium foil 102 and aluminium foil 103 are formed.
Then, alternatively, lamination 101 is carried out compaction treatment.According to one embodiment of present invention, show as schematically shown in Figure 2, by carrying out roll-in with roll 201,202 pairs of laminations 101, lamination 101 is carried out compaction treatment.
Also can (additional or individually) adopt other compacting means/devices to improve the compactness extent of lamination 101, include, but is not limited to hammering, extruding etc.
Fig. 3 illustrates to have shown according to a further embodiment of the present invention, wherein, earlier lamination 101 is placed into 301 li of outer covers, then lamination 101 is carried out roll-in, hammering together with outer cover 301 and/or pushes isobaric crucial point reason.
Preferably, outer cover 301 is made of titanium, and is perhaps made by a kind of alloy of titanium and aluminium.
Should be noted in the discussion above that Fig. 3 is the synoptic diagram sectional view, size wherein is not actual proportional range.
According to a preferred embodiment, the length of outer cover 301 is greater than the length that is placed into lamination 101 wherein, as shown in Figure 3.Like this, through after with roll 201, the 202 pairs of roll compacting of lamination 101 together with outer cover 301, the excessive portion of outer cover 301 can be pressed to together, and touch end and the periphery of lamination 101, thereby makes outer cover 301 closely encase lamination 101, as shown in Figure 4.A benefit like this is that in thermal treatment subsequently, the outer cover 301 that encases lamination 101 can stop the outflow of the aluminium of fusing in the lamination 101.
Subsequently, lamination 101 is carried out high-temperature heat treatment, wherein lamination 101 is heated to above the fusing point of aluminium but is lower than the temperature of the fusing point of titanium, thereby make the aluminium in the aluminium foil in the lamination 101 be in liquid phase.
In this thermal treatment, in lamination 101, the titanium generation phase mutual diffusion in the aluminium in the aluminium foil 103 of fusing and the titanium foil 102, thus generated the alloy of titanium and aluminium.In a specific embodiment of the present invention, described high-temperature heat treatment comprises: lamination 101 was heated to about 930 ℃ from room temperature in about 15 minutes, and kept about 15 hours down at about 900 ℃ subsequently.
According to a specific embodiment of the present invention, the lamination 101 that is surrounded by outer cover 301 is put in the silica tube (not shown), then silica tube is sealed and vacuumizes, then the lamination that is surrounded by outer cover 301 101 in the silica tube is carried out above-mentioned high-temperature heat treatment.
According to a further specific embodiment of the present invention, in the silica tube of the lamination 101 that is surrounded by outer cover 301 of having packed into, charge into such as rare gas element, then the lamination 101 in this silica tube is carried out above-mentioned high-temperature heat treatment.
According to a further embodiment of the present invention, as shown in Figure 5, can roll one or more layers stacked titanium foil 102 and aluminium foil 103 (or replacing stacked multilayer titanium foil 102 and laminated aluminium foil 103), thereby form a volume 501.Titanium foil 102 and aluminium foil 103 in this volume 501 are alternately stacked, that is, volume 501 has comprised by replacing the lamination that stacked titanium foil 102 and aluminium foil 103 are formed.Carry out the isobaric crucial point reason of roll compacting to rolling up 501 then.
According to a preferred embodiment of the present invention, above-mentioned compacting means comprise with ring rolls and rolling rolling up 501.
According to a preferred embodiment of the present invention, as shown in Figure 6, can before compaction treatment, be placed into 502 li of pipes (outer cover) to volume 501 earlier.Preferably, pipe 502 is made of titanium, and is perhaps made by a kind of alloy of titanium and aluminium.
Fig. 6 is along the synoptic diagram sectional view of seeing with volume 501 axial direction due vertical direction.Should be noted in the discussion above that the size in Fig. 5 and 6 is not actual size and/or ratio.
According to a preferred embodiment, the length of pipe 502 is greater than the length that is placed into volume 501 wherein, as shown in Figure 6.Like this, through after with roll 201, the 202 pairs of roll compacting of volume 501 together with pipe (outer cover) 502, pipe 502 excessive portion can be pressed to together, and touch end and the periphery of volume 501, thereby the pipe 502 that the volume 501 of flattening is crushed closely encases.A benefit like this is that in thermal treatment subsequently, the outer cover 502 that encases volume 501 can stop the outflow of the aluminium of fusing in the volume 501.
Fig. 7 is the backscattered electron Photomicrograph of formed Ti-Al alloy among such embodiment of the present invention.The initial aluminum foil thickness that this embodiment adopts is 27 microns, and titanium foil is 50 microns, and its space periodic is: 27 microns+50 microns=77 microns.The photo of Fig. 7 shows that the Ti-Al alloy material made from aforesaid method of the present invention has comprised TiAl (γ) layer and Ti
3Al (α
2) layer alternative stacked, this space periodic that replaces little lamination is about 30 microns, and the space periodic in the titanium foil-aluminium foil lamination when not heat-treating after the pressure rolling is consistent).The photo of Fig. 7 further demonstrates, TiAl wherein (γ) layer-Ti
3Al (α
2) to replace little lamination be the little lamination of replacing of a kind of globality to layer, its TiAl (γ) layer and Ti
3Al (α
2) the layer expanded range that replaces little lamination be macroscopical (can reach titanium foil before the thermal treatment and the entire area of aluminium foil lamination), rather than be confined to the Ti in the particle in the prior art
3Al-TiAl (α
2/ γ) lamella.
According to one embodiment of present invention, by thickness and/or the number of plies of control titanium foil 102 and/or aluminium foil 103, can regulate thickness and/or the number of plies of titanium foil and aluminium foil in the lamination, and then can control TiAl layer-Ti that lamination 101 forms after thermal treatment
3The Al layer replaces the parameter of little lamination, comprises thickness, the Ti of TiAl (γ) layer
3Al (α
2) layer thickness and/or TiAl (γ) layer-Ti
3Al (α
2) space periodic etc. of layer alternative stacked.
Embodiment 1:
Operation steps:
1) stacked and be rolled into titanium foil-aluminum foil coil of an about 16mm of diameter the titanium film of the aluminium film of one deck 0.027mm and one deck 0.05mm;
2) above-mentioned titanium foil-aluminum foil coil is put into the titanium pipe of an about 1mm of the about 16mm wall thickness of internal diameter; The length of titanium pipe is longer than titanium foil-aluminium foil, reserves unnecessary titanium tube portion at the two ends of titanium foil-aluminium foil;
3) with milling train to titanium foil-aluminum foil coil of putting into above-mentioned titanium pipe rolling 10 times; Fig. 9 A signal has shown the rolling cross section of the titanium foil-aluminum foil coil 501 in titanium pipe when initial, and wherein label 902 and 903 schematically illustrates roll; Fig. 9 B schematically illustrates in the operation of rolling by the shape of cross section of the titanium foil-aluminum foil coil 501 of draw down; Fig. 9 C schematically illustrates rolling end back by the shape of cross section of the titanium foil-aluminum foil coil of draw down (cake) 501;
4) the titanium pipe of the titanium foil-aluminum foil coil of rolling mistake together with draw down is put in the silica tube, to being evacuated to 10 in the silica tube subsequently,
-3Pa;
5) the thermal treatment titanium foil-aluminum foil coil (cake) to the draw down in the silica tube carries out high-temperature heat treatment together with the titanium pipe, at about 15 minutes internal heating to about 930 ℃, about 60 ℃/minute of heating rate;
6) kept about 15 hours down at about 930 ℃;
7) after the sample cooling, make the tangent plane vertical with the axial cardinal principle of original titanium foil-aluminum foil coil, wherein the thickness d 9 of the titanium foil-aluminum foil coil (cake) 501 after draw down and the thermal treatment is approximately 7mm; Tangent plane is polished with sand papering, to the position picked-up backscattered electron microphotograph that label 905 among Fig. 9 C schematically illustrates substantially, obtained the backscattered electron microphotograph of Fig. 7.(please note that the diagram among Fig. 9 A-9C does not represent actual size and/or ratio.)
In the photo of Fig. 7, through X-ray diffraction and energy spectrum analysis, its filaments of sun (dark color) district part is TiAl (γ) district, and bright relatively (light color) bar district part is Ti
3Al (α
2) district.As shown in Figure 7, TiAl (γ) district and Ti
3Al (α
2) district constituted the little lamination that replaces.The expanded range of each layer has reached the entire area of the titanium foil-aluminium foil lamination in the titanium foil-aluminum foil coil of draw down before the thermal treatment in this little lamination.
In addition, the yardstick in Fig. 7 photo shows, its TiAl (γ) layer and Ti
3Al (α
2) layer the space periodic that replaces little lamination be about 30 microns, the space periodic numerical value basically identical of space periodic through reducing after rolling that this and initial titanium foil-aluminium foil lamination are 50 microns+27 microns=77 microns, and and in the prior art about 2 microns space periodic difference an order of magnitude.
Characteristics of the present invention and advantage include, but is not limited to:
-the Ti-Al alloy material of using method according to the abovementioned embodiments of the present invention to form has TiAl (γ) layer and the Ti of novelty
3Al (α
2) layer replace little lamination;
-this little the rhythmo structure that replaces of the present invention itself has just comprised generally acknowledged preferred " two phase compositions " and/or " two phase structure " and/or " two phase alloys " in the prior art;
-on the one hand, this every layer the scope that replaces in little lamination is the scope (and do not resemble " lamella " of the prior art be confined in the crystal grain) of initial aluminium foil/titanium foil; On the other hand, replace stacked described titanium foil and the space periodic basically identical of described aluminium foil in the described lamination (101,501) before the space periodic that replaces along the normal direction of layer of described little lamination and thermal treatment begin;
-the invention provides to make and have this a kind of effective means that replaces little rhythmo structure Ti-Al alloy;
-according to the present invention, can control the structural parameter that replace little lamination, these parameters include, but is not limited to thickness, the Ti of TiAl (γ) layer
3Al (α
2) layer thickness and/or TiAl (γ) layer-Ti
3Al (α
2) space periodic etc. of layer alternative stacked.
Should be understood that, below the description of in conjunction with the accompanying drawings and embodiments the present invention being carried out just illustrates but not is determinate, and do not breaking away under the prerequisite of the present invention that limits as appended claims, can carry out various changes, distortion and/or correction to above-described embodiment.
Claims (8)
1. the making method of Ti-Al alloy material is characterized in that comprising:
Formation comprises the lamination (101,501) that replaces stacked titanium foil (102) and aluminium foil (103);
Described lamination (101,501) is placed into an outer cover (301,502) lining,
To the processing that the described lamination (101,501) that has described outer cover (301,502) improves the compactness extent of described lamination (101,501), comprise roll-in, hammering, extruding, at least a in rolling with ring rolls,
The described lamination (101,501) that has described outer cover (301,502) is heated to above and the temperature below the fusing point of titanium of the fusing point of aluminium, heat-treats.
2. method according to claim 1 is characterized in that:
Described lamination (101,501) comprises the volume (501) that rolled-up described titanium foil (102) and described aluminium foil (103) constitute.
3. method according to claim 1 is characterized in that described thermal treatment comprises:
With 60 ℃/minute heating rate the described lamination (101,501) that has described outer cover (301,502) is heated to 700 ℃-1000 ℃;
The described lamination (101,501) that has described outer cover (301,502) was kept 15 hours down at 700 ℃-1000 ℃.
4. according to the method for claim 1, it is characterized in that the described lamination (101,501) that has described outer cover (301,502) in described thermal treatment is placed in the non-oxygenated environment, described non-oxygenated environment is select in the following environment a kind of:
Vacuum environment; And
Inert gas environment.
5. method according to claim 4, it is characterized in that described outer cover (301,502) length is greater than described lamination (101,501) length, and have a described outer cover (301 in the described thermal treatment, 502) described lamination (101,501) is placed in the sealed vessel, and keeps described non-oxygenated environment in described container.
6. according to any one described method among the claim 1-5, it is characterized in that:
Thickness and/or the number of plies of control titanium foil (102) and/or described aluminium foil (103), with the proportioning of titanium and aluminium in the adjusting lamination (101,501),
The product of described lamination (101,501) after described method is handled has TiAl(γ) layer and Ti
3Al(α
2) layer replace little lamination, described replace little lamination can extend to described thermal treatment and begin before the whole expanded range of described aluminium foil/described titanium foil, the space periodic that replaces stacked described titanium foil and aluminium foil before the described space periodic that replaces little lamination begins than thermal treatment in the described lamination (101,501) is suitable.
7. the Ti-Al alloy material is characterized in that
Described alloy material is to use to make as any one the described method among the claim 1-6,
Described Ti-Al alloy material has TiAl(γ) layer and Ti
3Al(α
2) layer replace little lamination, described replace little lamination can extend to described thermal treatment and begin before the whole expanded range of described aluminium foil/described titanium foil.
8. Ti-Al alloy material as claimed in claim 7, the space periodic that it is characterized in that replacing in the described lamination (101,501) before the described space periodic that replaces little lamination begins than thermal treatment stacked described titanium foil and aluminium foil is suitable.
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| CN102626713B (en) * | 2012-04-05 | 2013-11-20 | 哈尔滨工业大学 | Preparation method of TiAl base alloy plate |
| CN102744928B (en) * | 2012-07-25 | 2014-09-24 | 哈尔滨工业大学 | Preparation method for Ti3Al-TiAl laminated composite material |
| CN102732748B (en) * | 2012-07-27 | 2013-10-16 | 哈尔滨工业大学 | preparation method of spherical Ti3Al/TiAl two-phase alloy |
| CN106244859B (en) * | 2016-08-08 | 2017-12-26 | 武汉大学 | A kind of Al/TiAl3The preparation method of composite |
Citations (3)
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| CN1730223A (en) * | 2005-07-11 | 2006-02-08 | 哈尔滨工业大学 | Method for preparing titanium aluminium alloy sheet material from foil element by hot pressing diffusion transformation synthesis |
| CN101011706A (en) * | 2007-01-31 | 2007-08-08 | 哈尔滨工业大学 | Method for composite preparation of Ti alloy/TiAl alloy composite plate material by using laminated rolling-diffusion method |
| CN101219433A (en) * | 2008-01-18 | 2008-07-16 | 东北大学 | Process for producing intermetallic compound |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730223A (en) * | 2005-07-11 | 2006-02-08 | 哈尔滨工业大学 | Method for preparing titanium aluminium alloy sheet material from foil element by hot pressing diffusion transformation synthesis |
| CN101011706A (en) * | 2007-01-31 | 2007-08-08 | 哈尔滨工业大学 | Method for composite preparation of Ti alloy/TiAl alloy composite plate material by using laminated rolling-diffusion method |
| CN101219433A (en) * | 2008-01-18 | 2008-07-16 | 东北大学 | Process for producing intermetallic compound |
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