CN1718799A - Preparation method of fine crystal wear resistant material titanium nickel copper alloy - Google Patents
Preparation method of fine crystal wear resistant material titanium nickel copper alloy Download PDFInfo
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- CN1718799A CN1718799A CN 200510027351 CN200510027351A CN1718799A CN 1718799 A CN1718799 A CN 1718799A CN 200510027351 CN200510027351 CN 200510027351 CN 200510027351 A CN200510027351 A CN 200510027351A CN 1718799 A CN1718799 A CN 1718799A
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Abstract
An anti-wear fine-grain TiNi-Cu alloy is prepared proportionally from Ti, Ni and Cu through smelting, casting to obtain TiNi-Cu alloy ingot, cutting to become blanks, treating surface, coating glass lubricating agent, coating graphite lubricating agent on the inner surface of die, heating the blank and die, loading blank in die, isometric angle pressing and annealing.
Description
Technical field
The present invention relates to a kind of preparation method of fine crystal wear resistant material titanium nickel-copper alloy, be used to obtain the titanium nickel-Cu alloy material of high tribological property, and then improve the practical engineering application value of this alloy in fields such as aerospace, health care and civilian industries.Belong to metallic substance and metallurgical class technical field.
Background technology
Titanium nickel-copper (TiNi-Cu) alloy has a lot of excellent properties, as: favorable mechanical performance (specific tenacity height, heat resistance is good, fatigue strength is high), excellent biological compatibility, high erosion resistance and shape memory and super-elasticity, it is sensitive components with higher response frequency, research in recent years also finds, the TiNiCu alloy also have excellent tribological property (
Xu, Jianiun Guo, Jinfang Wang, Deguo Cui, Lishan, A study of the wear behavior of TiNiCu shape-memory alloy, Materials Science Forum, v 394-395,2002, p 357-360).But poor because of its intensity high and low temperature plasticity, make the acquisition of its high-performance bulk very difficult.
Application number is 200310107937.0 Chinese invention patent " the isometrical bent angle extruding production of micron fine-grained titanium-nickel-copper alloy bulk ", based on isometrical bent angle extrusion process (Equal Channel Angular Extrusion, ECAE) technological principle has been prepared fine-grained titanium-nickel-Cu alloy material, realize under the long-pending situation of material cross-section material repeatedly repeated extruding not changing, be used for preparing block grained material, and then plasticity, the toughness of raising material, improve its wear resisting property.But because the shearing action in high temperature and the extrusion process makes the MATERIALS ' DYNAMIC recrystallize, though its intensity of material grains refinement improves, but forfeiture part pseudoelasticity performance, be that the martensitic reversible recovery characteristic of thermo-elasticity almost disappears totally, its " plasticity " variation, toughness descends, so the raising of its wear resisting property is subjected to restriction to a certain degree.
Summary of the invention
The objective of the invention is to deficiency, a kind of preparation method of fine crystal wear resistant material titanium nickel-copper alloy is provided, can solve the problem of titanium nickel-copper-based shape memory alloy pseudoelasticity difference, improve tribological property at existing invention.
For realizing such purpose, the atomic percent scope of the alloy that the present invention selects for use: titanium is 48%～55%, and nickel is 35%～47%, and copper is 5%～10%.Titanium nickel-copper alloy bulk is cut into blank, apply glass lubricant after the surface treatment.Mould employing squeezing passage angle is 90 ° an isometrical bent angle extrusion mould, mold cavity surface applied oildag.With blank, mould difference heat tracing, and from process furnace, take out simultaneously and carry out isometrical bent angle extruding; Material after the extrusion process is carried out anneal, finally obtain the good titanium nickel-copper alloy bulk of tribological property.
Fine-grained titanium-nickel of the present invention-copper based wear-resistant alloy preparation method is specially: is 48%～55% with raw material by the atomic percent titanium, and nickel is 35%～47%, and copper is 5%～10% to prepare, and carries out melting under vacuum condition, makes titanium nickel-copper base alloy ingot casting.Ingot casting 800 ℃～900 ℃ annealing, is incubated 4～5 hours, block titanium nickel-copper alloy casting ingot line is cut into blank, blank is carried out surface treatment, make blank surface processing roughness R
a=1.25～2.5 μ m.Evenly apply glass protecting lubricant in blank surface, coat-thickness is 0.2～0.4mm.
The present invention adopts isometrical bent angle extrusion mould, and the squeezing passage angle of mould is 90 °.The mould that coats oildag is placed in 400 ℃～500 ℃ the process furnace and heats, be incubated 1～1.5 hour after reaching temperature; The another one process furnace is heated to 750 ℃～850 ℃, ready blank is put into this process furnace, treat that temperature is raised to 750 ℃～850 ℃ after, be incubated 15～30 minutes.The blank and the mould that heat are taken out simultaneously, rapidly blank is put into mould then, on universal hydraulic testing machine, blank is pushed.Repeat the blank that squeezes out is carried out surface treatment and applies glass lubricant, mold cavity coated graphite lubricant, push totally 2～6 times again, each extruding reduces by 30 ℃ of preheating temperatures than extruding last time, and minimum temperature is not less than 700 ℃.Material after the extruding is carried out anneal at 500 ℃～750 ℃, be incubated 1.5～2 hours postcooling, make the even refinement of material grains, can obtain fine-grained titanium-nickel-copper based wear-resistant alloy bulk to room temperature.
The present invention carries out anneal after adopting isometrical bent angle extrusion process to handle, and makes material generation static recovery, and it is more evenly tiny that material grains becomes, and its pseudoelasticity performance is improved, and finally obtains the good titanium nickel-copper alloy bulk of tribological property.The prepared high-abrasive material of the present invention has shown the excellent friction characteristic, and wear-resisting supporting capacity obviously improves, and frictional coefficient obviously reduces.
Embodiment
Below by specific embodiment technical scheme of the present invention is further described.
Embodiment 1:
Is 55% with raw material by the atomic percent titanium, and nickel is 35%, and copper is 10% to be equipped with, and adopts the melting of cold wall copper crucible vacuum magnetic suspension inductive method, makes titanium nickel-copper alloy casting ingot.Ingot casting 800 ℃ of annealing, is incubated 4 hours.Titanium nickel-copper alloy bulk line is cut into the blank of 80mm * 9.3mm * 9.3mm, blank surface is carried out ground, make blank surface processing roughness R
a=1.25～2.5 μ m evenly apply glass protecting lubricant in blank surface then, and coat-thickness is 0.2mm.
The squeezing passage angle of the isometrical bent angle extrusion mould that adopts is 90 °, with acetone mold cavity is cleaned, even then coated graphite lubricant.The mould that coats oildag is placed in 400 ℃ the process furnace and heats, reached after the temperature insulation 1 hour; The another one process furnace is heated to 750 ℃, is incubated 20 minutes.The blank and the mould that heat are taken out simultaneously, rapidly blank is put into mould then, on universal hydraulic testing machine, push immediately.The blank that extruding is come out repeats surface treatment and applies glass lubricant, mold cavity coated graphite lubricant, pushes totally 2 times again, and each test preheating temperature that reduces promptly is followed successively by: 750 ℃, 720 ℃.To the extruding after material carry out anneal, 500 ℃ the insulation 120 minutes then air cooling can obtain fine-grained titanium-nickel-copper wear resistant alloy bulk to room temperature.
Embodiment 2:
Is 50% with raw material by the atomic percent titanium, and nickel is 43%, and copper is 7% to be equipped with, and carries out melting under vacuum condition, makes titanium nickel-copper alloy casting ingot.Ingot casting 850 ℃ of annealing, is incubated 5 hours.Titanium nickel-copper alloy bulk line is cut into the blank of 80mm * 9.3mm * 9.3mm, blank surface is carried out ground, make blank surface processing roughness R
a=1.25～2.5 μ m evenly apply glass protecting lubricant in blank surface then, and coat-thickness is 0.3mm.
The squeezing passage angle of the isometrical bent angle extrusion mould that adopts is 90 °, with acetone mold cavity is cleaned, even then coated graphite lubricant.The mould that coats oildag is placed in 400 ℃ the process furnace and heats, reached after the temperature insulation 1 hour; The another one process furnace is heated to 850 ℃, ready blank is put into this process furnace, treat that temperature is raised to 850 ℃ after, be incubated 20 minutes.The blank and the mould that heat are taken out simultaneously, rapidly blank is put into mould then, on universal hydraulic testing machine, push immediately, the blank that extruding is come out carries out surface treatment etc. again, reduce the test preheating temperature, promptly be followed successively by: 850 ℃, 820 ℃, 790 ℃, 760 ℃, 730 ℃, 700 ℃ are carried out 6 extruding altogether.To the extruding after material carry out anneal, 600 ℃ the insulation 110 minutes then air cooling can obtain fine-grained titanium-nickel-copper wear resistant alloy bulk to room temperature.
Embodiment 3:
Is 48% with raw material by the atomic percent titanium, and nickel is 47%, and copper is 5% to be equipped with, and carries out melting under vacuum condition, makes titanium nickel-copper alloy casting ingot.Ingot casting 900 ℃ of annealing, is incubated 4.5 hours.Titanium nickel-copper alloy bulk line is cut into the blank of 80mm * 9.3mm * 9.3mm, blank surface is carried out ground, make blank surface processing roughness R
a=1.25～2.5 μ m evenly apply glass protecting lubricant in blank surface then, and coat-thickness is 0.4mm.
The squeezing passage angle of the isometrical bent angle extrusion mould that adopts is 90 °, with acetone mold cavity is cleaned, even then coated graphite lubricant.The mould that coats oildag is placed in 500 ℃ the process furnace and heats, reached after the temperature insulation 1 hour; Ready blank is put into the process furnace that another one is heated to 820 ℃, treat that temperature is raised to 820 ℃ after, be incubated 20 minutes.The blank and the mould that heat are taken out simultaneously, rapidly blank is put into mould then, on universal hydraulic testing machine, push immediately, the blank that extruding is come out carries out surface treatment etc. again, reduce the test preheating temperature, promptly be followed successively by: 820 ℃, 790 ℃, 760 ℃, 730 ℃, 700 ℃ are carried out 5 extruding altogether.To the extruding after material carry out anneal, 750 ℃ the insulation 90 minutes then air cooling can obtain fine-grained titanium-nickel-copper wear resistant alloy bulk to room temperature.
Claims (1)
1, a kind of preparation method of fine crystal wear resistant material titanium nickel-copper alloy, it is characterized in that be 48%～55% with raw material by the atomic percent titanium, nickel is 35%～47%, and copper is 5%～10% to prepare, and carries out melting under vacuum condition, make titanium nickel-copper base alloy ingot casting, ingot casting 800 ℃～900 ℃ annealing, is incubated 4～5 hours, block titanium nickel-copper alloy casting ingot line is cut into blank, blank is carried out surface treatment, make blank surface processing roughness R
a=1.25～2.5 μ m evenly apply glass protecting lubricant in blank surface, and coat-thickness is 0.2～0.4mm; The squeezing passage angle of the isometrical bent angle extrusion mould that adopts is 90 °, the mould that coats oildag is placed in 400 ℃～500 ℃ the process furnace to heat, and is incubated 1～1.5 hour after reaching temperature; The another one process furnace is heated to 750 ℃～850 ℃, ready blank is put into this process furnace, after treating that temperature is raised to 750 ℃～850 ℃, be incubated 15～30 minutes, the blank and the mould that heat are taken out simultaneously, rapidly blank is put into mould then, on universal hydraulic testing machine, blank is pushed; Repeat the blank that squeezes out is carried out surface treatment and applies glass lubricant, mold cavity coated graphite lubricant, push totally 2～6 times again, each extruding reduces by 30 ℃ of preheating temperatures than extruding last time, and minimum temperature is not less than 700 ℃; Material after the extruding is carried out anneal at 500 ℃～750 ℃, be incubated 1.5～2 hours postcooling, promptly obtain fine-grained titanium-nickel-copper based wear-resistant alloy bulk to room temperature.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345831A (en) * | 2015-07-15 | 2017-01-25 | 柳州市双铠工业技术有限公司 | Extrusion forming production method for metal substrate and hard material composite abrasion-resistant product |
| CN108070773A (en) * | 2017-12-18 | 2018-05-25 | 西安赛特思迈钛业有限公司 | A kind of Ni-based hexa-atomic memorial alloy of medical titanium |
| CN117965223A (en) * | 2024-03-29 | 2024-05-03 | 西安聚能超导线材科技有限公司 | Thermal insulation lubricant and application thereof in improving extrusion yield of superconductive ingot blanks |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107513656A (en) * | 2017-09-29 | 2017-12-26 | 徐州九鼎机电总厂 | A kind of high-toughness wear-resistant material applied on impeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228465C (en) * | 2003-09-26 | 2005-11-23 | 上海交通大学 | Micro grain titanium-nickel-palladium-base high-temperature shape memory alloy preparing method |
| CN1219105C (en) * | 2003-09-26 | 2005-09-14 | 上海交通大学 | Micron fine-grained titanium-nickel alloy block material isodiametric corner extrusion preparing method |
| CN1224473C (en) * | 2003-10-16 | 2005-10-26 | 上海交通大学 | Micron fine-grained titanium-nickel-copper alloy block constant-diameter corner extrusion preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345831A (en) * | 2015-07-15 | 2017-01-25 | 柳州市双铠工业技术有限公司 | Extrusion forming production method for metal substrate and hard material composite abrasion-resistant product |
| CN108070773A (en) * | 2017-12-18 | 2018-05-25 | 西安赛特思迈钛业有限公司 | A kind of Ni-based hexa-atomic memorial alloy of medical titanium |
| CN117965223A (en) * | 2024-03-29 | 2024-05-03 | 西安聚能超导线材科技有限公司 | Thermal insulation lubricant and application thereof in improving extrusion yield of superconductive ingot blanks |
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