CN109926567A - A kind of titanium alloy/bimetal copper-steel composite members and preparation method thereof - Google Patents
A kind of titanium alloy/bimetal copper-steel composite members and preparation method thereof Download PDFInfo
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- CN109926567A CN109926567A CN201910257594.7A CN201910257594A CN109926567A CN 109926567 A CN109926567 A CN 109926567A CN 201910257594 A CN201910257594 A CN 201910257594A CN 109926567 A CN109926567 A CN 109926567A
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Abstract
The present invention relates to a kind of titanium alloy/bimetal copper-steel composite members and preparation method thereof.The titanium alloy/bimetal copper-steel composite members include steel inner core and the titanium alloy housing with inner cavity, steel inner core has the interior inlay in the inner cavity of insertion titanium alloy housing, intercommunicating pore is offered in the interior inlay, the intercommunicating pore has the first and second aperture, and first and second aperture is respectively at the first and second position of steel core surface；The cavity wall face of the inner cavity of the titanium alloy housing includes outer surface composite part, the outer surface composite part, which has, respectively corresponds the first and second wall surface being combined with each other with the first and second position of steel core surface, titanium alloy housing further includes connection muscle composite part, and the first and second wall surface of outer surface composite part is cast integrally structure with muscle composite part is connected to.The connection structure of titanium alloy provided by the invention/bimetal copper-steel composite members, titanium alloy and steel is simplified, and is conducive to improving production efficiency, reduces processing cost.
Description
Technical field
The present invention relates to double metallic composite material fields, and in particular to a kind of titanium alloy/bimetal copper-steel composite members and its system
Preparation Method.
Background technique
Lightweight and high-performance have become a trend of new material development.With the development of industry, single material or
Alloy has been difficult meet the needs of modern production is to material comprehensive performance.Double metallic composite material is because having two kinds of metal materials
Excellent performance can solve the problems, such as the comprehensive performances such as high intensity, high tenacity, the corrosion-resistant, high temperature resistant that homogenous material is unable to satisfy, closely
Attract the attention of more and more researchers over year.
Steel material has the characteristics such as high intensity, high temperature resistant, toughness and fatigue strength height, is at present still many important components
Preferred material kind；Titanium alloy material has the characteristics that corrosion resistance is good, heat-resist, lightweight, but its fusing point is higher and pole
It easily reacts with other alloys and generates intermetallic compound, the brittleness for the casting for causing titanium alloy and other alloys to constitute is significantly
It is promoted, limits it in the application in certain fields.
By taking certain class rotor part of aerospace field as an example, titanium alloy/bimetal copper-steel complex form is used, to obtain
The comprehensive performances such as high intensity, high tenacity, lightweight, high temperature resistant, corrosion-resistant, titanium alloy and steel are combined with riveting method, this combination
Though mode can guarantee the compound reliability of bimetallic, overall processing process complexity, low efficiency and the higher cost of workpiece.
Summary of the invention
The purpose of the present invention is to provide a kind of titanium alloy/bimetal copper-steel composite members, to solve existing bimetallic composite members
Combination complexity problem.
Second object of the present invention is to provide a kind of preparation method of titanium alloy/bimetal copper-steel composite members, to solve
The problem of process of the bimetallic composite members of riveting method preparation is complicated, low efficiency.
To achieve the above object, technical solution used by titanium alloy of the invention/bimetal copper-steel composite members is:
A kind of titanium alloy/bimetal copper-steel composite members, the titanium alloy housing including steel inner core and with inner cavity, steel inner core
With the interior inlay in the inner cavity for being embedded in titanium alloy housing, intercommunicating pore, the intercommunicating pore tool are offered in the interior inlay
There is the first and second aperture, first and second aperture is respectively at the first and second position of steel core surface；Outside the titanium alloy
The cavity wall face of the inner cavity of set includes the outer surface composite part compound with the outer surface of interior inlay, and the outer surface composite part has
The first and second wall surface being combined with each other is respectively corresponded with the first and second position of steel core surface, titanium alloy housing further includes position
In in the intercommunicating pore and corresponding with the hole cavity configuration of intercommunicating pore being connected to muscle composite part, the first and second wall of outer surface composite part
Face is cast integrally structure with muscle composite part is connected to.
The interior inlay of titanium alloy provided by the invention/bimetal copper-steel composite members, steel inner core is embedded in titanium alloy housing,
Titanium alloy housing by outer surface composite part and connection muscle composite part and interior inlay formation fastening structure, within inlay and fasten
The reliable connection of complex form realization titanium alloy and steel；This combination can facilitate realization using the casting of titanium alloy, and titanium closes
The connection structure of gold and steel is simplified, and is conducive to improving production efficiency, reduces processing cost.
For the combining form for being further simplified titanium alloy and steel, facilitate the casting of actual rotor component, it is preferred that in described
Inlay is infiller panel, and the intercommunicating pore through-thickness runs through the infiller panel, and first and second aperture is located at interior edge
The forward and backward surface of panel, the inner cavity of the titanium alloy housing have forward and backward wall surface, extend before and after the connection muscle composite part, even
Logical muscle composite part front and rear ends are stretched out from the forward and backward surface of infiller panel and the front and back walls with the inner cavity of the titanium alloy housing
Face integrally connected.
For the bond strength for further increasing titanium alloy and steel, it is preferred that be spaced apart on the length direction of infiller panel
Equipped with multiple intercommunicating pore groups, each intercommunicating pore group includes the spaced apart connection of multiple width directions along infiller panel
Hole.
Technical solution used by titanium alloy of the invention/bimetal copper-steel composite members preparation method is:
A kind of preparation method of titanium alloy/bimetal copper-steel composite members, comprising the following steps:
1) steel inner core and casting mold are assembled, there are between casting between the surface and steel core surface of the type chamber of the casting mold
Gap；The steel inner core has the interior inlay in the inner cavity for being embedded in titanium alloy housing, offers connection in interior inlay
Hole, the intercommunicating pore have the first and second aperture, and first and second aperture is respectively at the first and second position of steel core surface
It place and is communicated with the type chamber of the casting mold；
2) be poured titanium alloy melting liquid into the type chamber of casting mold, titanium alloy melting liquid enter the casting gap through cooled and solidified with
The titanium alloy housing covered outside steel inner core is formed, the cavity wall face of the inner cavity of titanium alloy housing includes the appearance with interior inlay
The compound outer surface composite part in face, the outer surface composite part has to be respectively corresponded with the first and second position of steel core surface
The first and second wall surface being combined with each other；The titanium alloy melting liquid also enters in the intercommunicating pore simultaneously forms connection muscle composite part,
Through cooled and solidified, the first and second wall surface of outer surface composite part is cast integrally structure with muscle composite part is connected to get green body.
Titanium alloy provided by the invention/bimetal copper-steel composite members preparation method realizes titanium alloy, steel by casting method
Integrated molding, contraction when being solidified using titanium alloy melting liquid can make titanium alloy be fastened on the surface of steel inner core well,
It realizes good mechanical bond, avoids titanium alloy and steel reacts and generates intermetallic compound and influence the brittleness of casting；It should
The recombination process of preparation method is simple, can effectively improve the production efficiency of workpiece.
The defects of to further decrease internal shrinkage present in casting process, it is preferred that green body is subjected to hot isostatic pressing
Processing, the heating temperature of the hip treatment is 920 ± 10 DEG C, pressure is 100~140MPa, soaking time be 2~
2.5h。
Further to eliminate casting defect, final product quality is improved, it is further preferred that green body is through the hip treatment
After carry out defects detection, the defect detected is repaired.
For such rotor part of aerospace field, mandrel position requires high-intensitive, characteristic resistant to high temperature,
Other positions require high temperature resistant, lightweight, it is corrosion-resistant the features such as, to obtain better heat-resisting quantity and comprehensive mechanical property,
Preferably, maximum operating temperature >=760 DEG C of Steel material used in steel inner core, the highest of titanium alloy material used in titanium alloy housing
Operating temperature≤550 DEG C, the maximum operating temperature of Steel material are higher than the maximum operating temperature of titanium alloy material.
Detailed description of the invention
Fig. 1 is titanium alloy of the invention/bimetal copper-steel composite members embodiment structural schematic diagram；
Fig. 2 is the structural schematic diagram of titanium alloy inner core in titanium alloy of the invention/bimetal copper-steel composite members embodiment；
Fig. 3 is the sectional view of titanium alloy inner core in titanium alloy of the invention/bimetal copper-steel composite members embodiment；
Fig. 4 is the mold package schematic diagram of titanium alloy of the invention/bimetal copper-steel composite members preparation method embodiment；
In figure, 1- steel inner core, 2- titanium alloy housing, 3- infiller panel, the outer substrate of 4-, 5- through-hole, 6- casting mold.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Titanium alloy of the invention/bimetal copper-steel composite members specific embodiment, as shown in Figure 1 to Figure 3, including steel inner core
1 and the titanium alloy housing 2 with inner cavity, steel inner core 1 is the plate structure that length vertically extends, including closes embedded in titanium
Infiller panel 3 in the inner cavity of golden housing 2 and the outer substrate 4 for being connected to 3 lower end of infiller panel, the forward and backward surface of infiller panel 3
It is arranged at intervals with two sets of vias, each through-hole along its length within the forward and backward surface of outer substrate 4, on infiller panel 3
Group includes the through-hole opened up along multiple through-thickness (front-rear direction) that the width direction uniform intervals of infiller panel 3 are arranged
5.Through-hole 5 has the first and second aperture, and the first and second aperture is respectively at the forward and backward surface of infiller panel 3.
Titanium alloy housing 2 be the semicircular plate-form structure with inner cavity, the cavity wall face of the inner cavity of titanium alloy housing 2 include with
The compound composite part of infiller panel 3, composite part include the outer surface composite part compound with the outer surface of infiller panel 3, Yi Jiwei
In in through-hole 5 and structure is corresponding with the hole cavity configuration of through-hole 5 is connected to muscle composite part, extend before and after connection muscle composite part, connection
The front and rear ends of muscle composite part respectively from the forward and backward surface of infiller panel 3 stretch out and it is forward and backward with the inner cavity of titanium alloy housing 2
Wall surface is cast integrally structure.
The lower end of the outer substrate 4 of steel inner core 1 be also connected with forward and backward surface be located at infiller panel 3 before, within table surface
Mounting head, offer outer substrate locating slot, the thickness phase of the thickness and titanium alloy housing 2 of outer substrate 4 on titanium alloy housing 2
Deng the lower surface of outer substrate 4 is concordant with the lower surface of titanium alloy housing 2.
In titanium alloy of the invention/bimetal copper-steel composite members other embodiments, steel inner core 1 is not limited to plate structure,
It can be column construction, and the through-hole that front and back penetrates through can be opened up along the radial direction of column construction；Through-hole runs through form not
It is limited to front and back perforation, the corresponding position of outer surface composite part can be connected to, it such as can be in a certain diameter of cylindricality steel inner core
To on section, the fold-line-shaped intercommunicating pore that bottom is connected at axis is opened up along different radial directions.
The specific embodiment of titanium alloy of the invention/bimetal copper-steel composite members preparation method, using following steps:
1) design requirement machining steel inner core 1 is pressed, material used in steel inner core 1 is the GH4169 by modifier treatment
Alloy, surface roughness Ra≤1.6 μm.
2) select graphite as mold material, by the shape of bimetallic composite members by machining graphite at casting mold 6；It will be in steel
The surface alcohol washes of core 1 are clean, combine later with casting mold 6, obtain mold package (as shown in Figure 4)；The type of the casting mold 6
There are casting gaps between the surface and steel core surface of chamber；The steel inner core 1 has for being embedded in titanium alloy housing 2
Interior inlay in inner cavity, offers intercommunicating pore in interior inlay, and the intercommunicating pore has the first and second aperture, and described first and second
Aperture is respectively at the first and second position of steel core surface and communicates with the type chamber of the casting mold 6.
3) titanium alloy (model TA15) is melted by vacuum consumable arc-melting, obtains titanium alloy melting liquid；
Degasification, preheating are carried out to mold package in except steam stove, then titanium alloy melting liquid is poured into the type of mold package
In chamber, titanium alloy melting liquid enters the casting gap and forms the titanium alloy housing covered outside steel inner core 1 through cooled and solidified
2, the cavity wall face of the inner cavity of titanium alloy housing 2 includes the outer surface composite part compound with the outer surface of interior inlay, the appearance
Face composite part, which has, respectively corresponds the first and second wall surface being combined with each other with the first and second position of steel core surface；The titanium
Alloy molten solution also enters in the intercommunicating pore simultaneously forms connection muscle composite part, through cooled and solidified, outer surface composite part first,
Two wall surfaces are cast integrally structure with muscle composite part is connected to get green body, have on green body positioned at 2 upper end of titanium alloy housing from
The dead head that upper and lower casting is formed.
4) hip treatment will be carried out after green body cleaning, finishing (heating temperature is 920 DEG C, pressure 120MPa, heat preservation
Time is 2h), x-ray inspection and fluorescence detection are used later, check the inside and outside quality of workpiece, it is such as defective, utilize vacuum
Argon arc welding mode carries out defect repair to get qualified finished product.
In the other embodiments of titanium alloy of the invention/bimetal copper-steel composite members preparation method, steel inner core 1 is made
The high temperature alloys such as model GH128, GH4220, GH4698, titanium alloy used in titanium alloy housing 2 may be selected in Steel material
Material can be TC4, TA5, TA2 etc., and titanium alloy/bimetal copper-steel of corresponding material is then prepared according to method made above
Composite members.Hip treatment condition can be adjusted flexibly according to actual conditions such as workpiece material, sizes.
Claims (7)
1. a kind of titanium alloy/bimetal copper-steel composite members, which is characterized in that outside the titanium alloy including steel inner core and with inner cavity
Set, steel inner core have the interior inlay in the inner cavity of insertion titanium alloy housing, offer intercommunicating pore in the interior inlay, institute
Intercommunicating pore is stated with the first and second aperture, first and second aperture is respectively at the first and second position of steel core surface；Institute
The cavity wall face for stating the inner cavity of titanium alloy housing includes the outer surface composite part compound with the outer surface of interior inlay, the outer surface
Composite part, which has, respectively corresponds the first and second wall surface being combined with each other with the first and second position of steel core surface, outside titanium alloy
Set further include be located at the intercommunicating pore in and it is corresponding with the hole cavity configuration of intercommunicating pore be connected to muscle composite part, outer surface composite part
First and second wall surface is cast integrally structure with muscle composite part is connected to.
2. titanium alloy as described in claim 1/bimetal copper-steel composite members, which is characterized in that the interior inlay is interior inlays
Plate, the intercommunicating pore through-thickness run through the infiller panel, and first and second aperture is located at the forward and backward table of infiller panel
Face, the inner cavity of the titanium alloy housing have forward and backward wall surface, extend before and after the connection muscle composite part, connection muscle composite part
Front and rear ends are stretched out from the forward and backward surface of infiller panel and the forward and backward wall surface integrally connected with the inner cavity of titanium alloy housing.
3. titanium alloy as claimed in claim 2/bimetal copper-steel composite members, which is characterized in that in the length direction of infiller panel
Upper be spaced apart is equipped with multiple intercommunicating pore groups, and each intercommunicating pore group includes the spaced apart institute of multiple width directions along infiller panel
State intercommunicating pore.
4. a kind of titanium alloy/bimetal copper-steel composite members preparation method, which comprises the following steps:
1) steel inner core and casting mold are assembled, there are casting gaps between the surface and steel core surface of the type chamber of the casting mold；
The steel inner core has the interior inlay in the inner cavity for being embedded in titanium alloy housing, offers intercommunicating pore in interior inlay,
The intercommunicating pore has the first and second aperture, and first and second aperture is respectively at the first and second position of steel core surface
And it is communicated with the type chamber of the casting mold；
2) titanium alloy melting liquid is poured into the type chamber of casting mold, titanium alloy melting liquid enters the casting gap through cooled and solidified to be formed
The titanium alloy housing outside steel inner core is covered, the cavity wall face of the inner cavity of titanium alloy housing includes multiple with the outer surface of interior inlay
The outer surface composite part of conjunction, the outer surface composite part respectively correspond compound with the first and second position with steel core surface
The first and second wall surface together；The titanium alloy melting liquid also enters in the intercommunicating pore simultaneously forms connection muscle composite part, through cold
But it solidifies, the first and second wall surface of outer surface composite part is cast integrally structure with muscle composite part is connected to get green body.
5. titanium alloy as claimed in claim 4/bimetal copper-steel composite members preparation method, which is characterized in that carry out green body
Hip treatment, the heating temperature of the hip treatment is 920 ± 10 DEG C, pressure is 100~140MPa, soaking time
For 2~2.5h.
6. titanium alloy as claimed in claim 5/bimetal copper-steel composite members preparation method, which is characterized in that described in green body warp
Defects detection is carried out after hip treatment, and the defect detected is repaired.
7. titanium alloy/bimetal copper-steel composite members preparation method as described in any one of claim 4-6, which is characterized in that
Steel material used in steel inner core is high temperature alloy, and maximum operating temperature >=760 DEG C, titanium alloy material used in titanium alloy housing is most
Elevated operating temperature≤550 DEG C, the maximum operating temperature of Steel material are higher than the maximum operating temperature of titanium alloy material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687394A (en) * | 2020-05-19 | 2020-09-22 | 赵纪明 | Preparation method of corrosion-resistant ductile malleable cast iron material |
| CN113118447A (en) * | 2021-03-08 | 2021-07-16 | 中国船舶重工集团公司第七二五研究所 | Titanium-steel dissimilar metal hybrid connection method |
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| CN104532056A (en) * | 2014-12-08 | 2015-04-22 | 洛阳双瑞精铸钛业有限公司 | High temperature titanium alloy and preparation method thereof |
| CN105970274A (en) * | 2016-06-21 | 2016-09-28 | 金锢电气有限公司 | Conductive block |
| CN106862534A (en) * | 2017-02-17 | 2017-06-20 | 丹阳恒庆复合材料科技有限公司 | One kind manufacture metallurgical binding ply-metal Processes and apparatus |
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| JPH06179069A (en) * | 1992-12-14 | 1994-06-28 | Mitsubishi Materials Corp | Production of composite of firmly combined high melting point metal part and low melting point metal part |
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| CN104532056A (en) * | 2014-12-08 | 2015-04-22 | 洛阳双瑞精铸钛业有限公司 | High temperature titanium alloy and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111687394A (en) * | 2020-05-19 | 2020-09-22 | 赵纪明 | Preparation method of corrosion-resistant ductile malleable cast iron material |
| CN113118447A (en) * | 2021-03-08 | 2021-07-16 | 中国船舶重工集团公司第七二五研究所 | Titanium-steel dissimilar metal hybrid connection method |
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