CN1205941A - Hydrogenation preparation technology and equipment of long fiber reinforced titanium-base composite material - Google Patents
Hydrogenation preparation technology and equipment of long fiber reinforced titanium-base composite material Download PDFInfo
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- CN1205941A CN1205941A CN 97105265 CN97105265A CN1205941A CN 1205941 A CN1205941 A CN 1205941A CN 97105265 CN97105265 CN 97105265 CN 97105265 A CN97105265 A CN 97105265A CN 1205941 A CN1205941 A CN 1205941A
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- Prior art keywords
- composite material
- hydrogen
- long fiber
- fiber reinforced
- vacuum
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- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims description 18
- 238000005516 engineering process Methods 0.000 title claims description 9
- 238000005984 hydrogenation reaction Methods 0.000 title claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 24
- 239000001257 hydrogen Substances 0.000 claims abstract description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 9
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims description 2
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007731 hot pressing Methods 0.000 description 17
- 239000011159 matrix material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 238000010406 interfacial reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The titanium alloy sheets fabricated in advance and the women long fiber cloth are first stocked alternately into pre-fabricated composite material,which is then heated at 700-900 deg.c and vacuum state of 0.001-0.01 Pa; filled with hydrogen of 0.01-0.1 MPa pressure; and applied with pressure load of 30-50 MPa for 30-60 min. Hydrogen is pumped out when, during or after the pressure load is applied and after the vacuum degree reaches 0.001-0.01 Pa, the composite material is cooled to room temperature. The present invention has low production cost but good product quality.
Description
The present invention relates to composite, provide a kind of heat from hydrogenation compacting of titanium matrix composite of long fibre enhancing to be equipped with technology especially.
Long fiber reinforced titanium-base composite material is compared with conventional titanium alloy, has higher high temperature specific strength, thereby has potential application foreground widely in Aeronautics and Astronautics industry.Yet this class titanium matrix composite generally needs to be prepared under higher temperature, as thermal diffusion interconnection technique commonly used, produce the chemical reaction layer between the fiber interface thus inevitably, become the reduction composite property, hinder it and obtain one of key factor of using.In order to improve fibre reinforcement chemistry and kinetic property at the interface, the most common means are exactly to apply the carrying out that hinders or weaken interfacial chemical reaction by fiber surface is carried out inertia.When considering that temperature is when influencing key factor of interfacial chemical reaction, the preparation temperature that effectively reduces composite then is the another possibility means that reduce the interfacial reaction degree.If yet reduced preparation temperature, the rheology drag of matrix material is significantly increased, thereby just require to increase considerably preparation time, otherwise can cause incomplete connection, perhaps further increase connection pressure.And the former obviously can significantly increase preparation cost, also can help the carrying out of chemical reaction simultaneously, and the latter then may cause major injury at the interface.Thereby can the rheology drag that temporarily reduce matrix material in the preparation process of titanium matrix composite be the basic place of realizing effectively reducing preparation temperature.Hydrogen is a kind of β phase (high-temp plastic phase) stabilizing element in titanium and alloy thereof, the transformation behavior that adds the remarkable change of affiliation titanium alloy of hydrogen, can in certain temperature range, increase the relative amount of β phase in the alloy structure, and then improve the high-temp plastic deformability of alloy.Hydrogen another characteristics in titanium alloy are, the meltage of hydrogen in titanium alloy is very big, thereby can carry out a large amount of reversible charging and discharging in the titanium alloy in certain temperature range, that is to say and to remove hydrogen in the titanium alloy by high-temperature vacuum annealing, thereby eliminate the adverse effect that hydrogen brings alloy mechanical property.Utilize the above-mentioned character of hydrogen in titanium alloy, the inventor once proposed the technology that the hydrogeneous titanium alloy of a kind of usefulness prepares long fiber reinforced titanium-base composite material, in the prepared composite between matrix/fiber the chemical reaction layer very thin, connect good, thereby reached the purpose that improves material property, but whole process of preparation is comparatively cumbersome.
The object of the present invention is to provide a kind of hydrogenation preparation technology and equipment of long fiber reinforced titanium-base composite material, it can disposablely finish the preparation of composite, thereby reduces production costs, and good product quality.
The invention provides a kind of hydrogenation preparation technology of long fiber reinforced titanium-base composite material, alternate the stacking of long fibre cloth that titanium alloy platinized platinum that at first will make in advance and braiding are good becomes prefabricated composite, it is characterized in that preparation process is as follows:
----is heated to 700～900 ℃ with prefabricated composite under vacuum state, vacuum is 10
-2～10
-3Pa;
----charges into hydrogen, and Hydrogen Vapor Pressure is 0.01～0.1MPa;
----to the prefabricated composite load of exerting pressure, pressure is 30～50MPa, and the time is 30～60min;
----loading simultaneously, or in loading procedure or in unloading simultaneously, vacuumizes dehydrogenation, to vacuum be 10
-2～10
-3Pa;
----is cooled to room temperature.
The present invention depends on following special equipment and realizes, this equipment body is the airtight stainless steel boiler tube (2) of a band pressure head (1), pressure head (1) and boiler tube (2) movable sealing suitable for reading, boiler tube (2) links to each other with gas charging system (3) with vacuum simultaneously, and boiler tube (2) can insert in the heating furnace.Adopt technology of the present invention and equipment, can successfully prepare long fiber reinforced titanium-base composite material under the temperature conditions that is lower than 50～100 ℃ of normal preparation temperatures, the interfacial reaction layer thickness between the fiber reduces, good mechanical properties.By embodiment in detail the present invention is described in detail below in conjunction with accompanying drawing.
Accompanying drawing 1 is a controlled atmosphere hot pressing furnace agent structure schematic diagram.
Accompanying drawing 2 is the vacuum hot-pressing process curve.
Accompanying drawing 3 is first kind and fills hydrogen hot pressing mode process curve.
Accompanying drawing 4 is second kind and fills hydrogen hot pressing mode process curve.
Accompanying drawing 5 fills hydrogen hot pressing mode process curve for the third.
Accompanying drawing 6 is organized photo (a) N1 (b) N2 (c) N3 (d) N4 for the vacuum hotpressing result.
Accompanying drawing 7 is that first kind of original position filled hydrogen hot pressing result and organized photo (a) HA1 (b) HA2.
Accompanying drawing 8 is that second kind of original position filled hydrogen hot pressing result and organized photo (a) HB2 (b) HB2.
Accompanying drawing 9 fills hydrogen hot pressing result for the third original position and organizes photo (a) HC1 (b) HC2 (c) HC3.
Embodiment
The experiment materials are that pure Ti thickness is 80 μ m, and long fibre is the SiC of diameter 98 μ m, and device therefor as shown in Figure 1.
The composite sample is pressed the process route preparation of accompanying drawing 2～5, specimen coding such as table 1 respectively.Sample metallograph such as accompanying drawing 6～9.As seen filling hydrogen hot pressing result all is better than and does not fill hydrogen hot pressing result.
Table 1
| Specimen coding | Hot pressing mode | Hot pressing parameters |
| N1～N4 | Vacuum hotpressing | T(℃)=700、750、800、850 |
| HA1，HA2 | First kind is filled the hydrogen hot pressing mode | P H2=0．02MPa T(℃)=700、750 |
| HB1～HB2 | Second kind is filled the hydrogen hot pressing mode | T=750℃ P H2(MPa)=001，002，003，004 |
| HC1～HC2 | The third fills the hydrogen hot pressing mode | T=750℃，P H2=0．02MPa t Insulation(min)=0、10、20 |
Claims (2)
1. the hydrogenation preparation technology of a long fiber reinforced titanium-base composite material, titanium alloy sheet that at first will make in advance and good alternate the stacking of long fibre cloth of braiding become prefabricated composite, it is characterized in that preparation process is as follows:
----is heated to 700～900 ℃ with prefabricated composite under vacuum state, vacuum is 10
-2～10
-3Pa;
----charges into hydrogen, and Hydrogen Vapor Pressure is 0.01～0.1MPa;
----to the prefabricated composite load of exerting pressure, pressure is 30～50MPa, and the time is 30～60min;
----loading simultaneously or in loading procedure or in unloading simultaneously, vacuumizing dehydrogenation, to vacuum be 10
-2～10
-3Pa;
----is cooled to room temperature.
2. the special equipment of the described long fiber reinforced titanium-base composite material hydrogenation preparation technology of claim 1, it is characterized in that, this equipment body is the airtight stainless steel boiler tube (2) of a band pressure head (1), pressure head (1) and boiler tube (2) movable sealing suitable for reading, boiler tube (2) links to each other with gas charging system (3) with vacuum simultaneously, and boiler tube (2) can insert in the heating furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105265A CN1093464C (en) | 1997-07-18 | 1997-07-18 | Hydrogenation preparation technology and equipment of long fiber reinforced titanium-base composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105265A CN1093464C (en) | 1997-07-18 | 1997-07-18 | Hydrogenation preparation technology and equipment of long fiber reinforced titanium-base composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1205941A true CN1205941A (en) | 1999-01-27 |
| CN1093464C CN1093464C (en) | 2002-10-30 |
Family
ID=5167796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97105265A Expired - Fee Related CN1093464C (en) | 1997-07-18 | 1997-07-18 | Hydrogenation preparation technology and equipment of long fiber reinforced titanium-base composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093464C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936706A (en) * | 2012-11-13 | 2013-02-20 | 北京理工大学 | Carbon fiber cloth-titanium alloy composite material and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276283A (en) * | 1975-12-23 | 1977-06-27 | Chiyoo Komori | Hydrogen fibers and foils thereof and manufacture |
| US4655855A (en) * | 1985-07-25 | 1987-04-07 | The United States Of America As Represented By The Secretary Of The Air Force | Method for refining microstructures of prealloyed titanium powder compacted articles |
| CN1131203A (en) * | 1995-03-13 | 1996-09-18 | 中国科学院金属研究所 | Intermetallics hydrogenation chemical heat treatment method |
-
1997
- 1997-07-18 CN CN97105265A patent/CN1093464C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936706A (en) * | 2012-11-13 | 2013-02-20 | 北京理工大学 | Carbon fiber cloth-titanium alloy composite material and preparation method thereof |
| CN102936706B (en) * | 2012-11-13 | 2015-09-02 | 北京理工大学 | A kind of Carbon fiber cloth-titanium alloy composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1093464C (en) | 2002-10-30 |
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