CN103667790A - Heat treatment method for strong-strength titanium alloy - Google Patents
Heat treatment method for strong-strength titanium alloy Download PDFInfo
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- CN103667790A CN103667790A CN201410018654.7A CN201410018654A CN103667790A CN 103667790 A CN103667790 A CN 103667790A CN 201410018654 A CN201410018654 A CN 201410018654A CN 103667790 A CN103667790 A CN 103667790A
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- strength titanium
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 56
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000032683 aging Effects 0.000 claims abstract description 45
- 239000010936 titanium Substances 0.000 claims abstract description 11
- 238000007669 thermal treatment Methods 0.000 claims description 16
- 238000002791 soaking Methods 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 12
- 230000000171 quenching effect Effects 0.000 claims description 9
- 238000005097 cold rolling Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 abstract description 2
- 239000012467 final product Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- 150000002500 ions Chemical class 0.000 description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a heat treatment method for a strong-strength titanium alloy. The strong-strength titanium alloy contains the following components in percentage by weight: 28 to 38 percent of Nb, 8.8 to 9.2 percent of Zr, 6.2 to 7.6 percent of Sn, 0.08 to 0.15 percent of O, 1.88 to 2.7 percent of RE, 2.6 to 3.2 percent of Al, 1.28 to 2.1 percent of C and the balance of Ti. The heat treatment method comprises the following steps of solid solution heat treatment and aging heat treatment, wherein the aging heat treatment is divided into five steps. According to the heat treatment method, specific aging steps are detailed, so that the strength, the elasticity modulus and the like of a final product are greatly improved.
Description
Technical field
The invention belongs to alloy material Field of Heat-treatment, particularly relate to a kind of heat treating method of high strength titanium alloy.
Background technology
Medical titanium alloy refers to the titanium alloy for the manufacture of the medical device in implant into body, prosthese or artificial organs and assisting therapy equipment, general requirement specific tenacity is high, mechanical property approaches people's bone, intensity is much better than pure titanium, also has the features such as antifatigue, corrosion-resistant and biocompatibility be good.At present at widely used medical titanium alloy in medical field, in use can separate out the vanadium ion of denier, the toxic meeting of vanadium ion of wherein separating out causes disadvantageous tissue reaction, the defect that reduction cell adaptation etc. works the mischief to human body, the problems referred to above have caused the strong interest of medical circle, although can stop to a certain extent the diffusion of the poisonous element ions such as vanadium by top coat and other treatment technology, but not the basic way of dealing with problems after all, but after eliminating V ion, the performance of titanium alloy is had to considerable influence, therefore urgent need research and development are a kind of can reach its performance, do not contain again the medical titanium alloy of V.
Summary of the invention
One of object of the present invention is to propose a kind of heat treating method of high strength titanium alloy;
Two of object of the present invention is to propose a kind of high strength titanium alloy of being prepared by this heat treating method;
For reaching this object, the present invention by the following technical solutions:
A heat treating method for high strength titanium alloy, described high strength titanium alloy contains according to weight percent content: Nb:28 ~ 38%, Zr:8.8 ~ 9.2%, Sn:6.2 ~ 7.6%, O:0.08 ~ 0.15%, RE:1.88 ~ 2.7%, Al:2.6 ~ 3.2%, C:1.28 ~ 2.1%, surplus is Ti;
Thermal treatment comprises the steps:
Solution heat treatment: the titanium alloy plate after cold rolling is carried out in chamber type electric resistance furnace to solution heat treatment, solid solubility temperature is 860-880 ℃, and soaking time is 2.8 ~ 4.8h, shrend;
Timeliness thermal treatment: be divided into following five steps: aging temp is 315 ~ 330 ℃, soaking time is 12 ~ 28min, shrend; Reheat 410 ~ 430 ℃ and carry out ageing treatment for the second time, aging time is 1.9 ~ 2.1h, shrend; Reheat 480 ~ 495 ℃ and carry out timeliness for the third time, aging time is 2 ~ 2.5h, shrend; Reheat 520 ~ 550 ℃ and carry out timeliness the 4th time, aging time is 5 ~ 8h, shrend; Reheat 580 ~ 620 ℃ and carry out timeliness the 5th time, aging time is 10 ~ 12h, and shrend obtains high strength titanium alloy finished product.
As preferably, according to weight percent content, contain: Nb:29.5%, Zr:9.1%, Sn:7.1%, O:0.12%, RE:2.1%, Al:2.8%, C:1.38%, surplus is Ti.
As preferably, according to weight percent content, contain: Nb:31.5%, Zr:9.0%, Sn:7.4%, O:0.12%, RE:2.1%, Al:2.85%, C:1.69%, surplus is Ti.
As preferably, after solution heat treatment He before timeliness thermal treatment, also to quench and tempering heat treatment, described quenching is: described titanium alloy is heated to 980 ~ 1020 ℃ of insulation 1 ~ 2h, then comes out of the stove with oil quenching; Described tempering is: the titanium alloy after quenching is heated to 245 ~ 298 ℃ of insulation 2 ~ 3h, and the air cooling of then coming out of the stove is to room temperature.
As preferably, timeliness thermal treatment is divided into following five steps: aging temp is 320 ℃, and soaking time is 18min, shrend; Reheat 420 ℃ and carry out ageing treatment for the second time, aging time is 2h, shrend; Reheat 485 ℃ and carry out timeliness for the third time, aging time is 2.2h, shrend; Reheat 535 ℃ and carry out timeliness the 4th time, aging time is 5.8h, shrend; Reheat 615 ℃ and carry out timeliness the 5th time, aging time is 11h, and shrend obtains high strength titanium alloy finished product.
As preferably, described solution heat treatment for to carry out the titanium alloy plate after cold rolling solution heat treatment in chamber type electric resistance furnace, and solid solubility temperature is 875 ℃, and soaking time is 3.2h, shrend.
A high strength titanium alloy, adopts aforesaid heat treating method to prepare.
effect of the present invention is:
By the restriction of specific specific timeliness step and parameter, make more than titanium alloy tensile strength reaches 1000MPa, Young's modulus is more than 80GPa;
By coordinating of concrete timeliness thermal treatment and concrete solid solution and annealing, temper, make under prerequisite that other performances of titanium alloy improve in intensity, keeping elongation is 11 ~ 19%, relative reduction in area remains 38 ~ 58%;
By coordinating of above-mentioned concrete thermal treatment and concrete alloying constituent, stability has been reached more than 90%.
Embodiment
embodiment 1
The heat treating method of high strength titanium alloy, described high strength titanium alloy contains according to weight percent content: Nb:32%, Zr:9.1%, Sn:7.0%, O:0.12%, RE:2.01%, Al:2.9%, C:1.98%, surplus is Ti;
Thermal treatment comprises the steps:
Solution heat treatment: the titanium alloy plate after cold rolling is carried out in chamber type electric resistance furnace to solution heat treatment, solid solubility temperature is 868 ℃, and soaking time is 3.8h, shrend;
Timeliness thermal treatment: be divided into following five steps: aging temp is 320 ℃, soaking time is 21min, shrend; Reheat 420 ℃ and carry out ageing treatment for the second time, aging time is 2.0h, shrend; Reheat 490 ℃ and carry out timeliness for the third time, aging time is 2.35h, shrend; Reheat 530 ℃ and carry out timeliness the 4th time, aging time is 8h, shrend; Reheat 610 ℃ and carry out timeliness the 5th time, aging time is 11h, and shrend obtains high strength titanium alloy finished product.
The various performance parameters of measuring high strength titanium alloy finished product is: tensile strength reaches 1102MPa, and Young's modulus is at 88GPa; Elongation is 11%, and relative reduction in area remains 39%.
embodiment 2:
The heat treating method of high strength titanium alloy, described high strength titanium alloy contains according to weight percent content: Nb:29.5%, Zr:9.1%, Sn:7.1%, O:0.12%, RE:2.1%, Al:2.8%, C:1.38%, surplus is Ti.
Thermal treatment comprises the steps:
Solution heat treatment: the titanium alloy plate after cold rolling is carried out in chamber type electric resistance furnace to solution heat treatment, solid solubility temperature is 868 ℃, and soaking time is 3.8h, shrend;
Quench and tempering heat treatment, described quenching is: described titanium alloy is heated to 990 ℃ of insulation 1.2h, then comes out of the stove with oil quenching; Described tempering is: the titanium alloy after quenching is heated to 268 ℃ of insulation 2.5h, and the air cooling of then coming out of the stove is to room temperature.
Timeliness thermal treatment is divided into following five steps: aging temp is 320 ℃, and soaking time is 18min, shrend; Reheat 420 ℃ and carry out ageing treatment for the second time, aging time is 2h, shrend; Reheat 485 ℃ and carry out timeliness for the third time, aging time is 2.2h, shrend; Reheat 535 ℃ and carry out timeliness the 4th time, aging time is 5.8h, shrend; Reheat 615 ℃ and carry out timeliness the 5th time, aging time is 11h, and shrend obtains high strength titanium alloy finished product.
The various performance parameters of measuring high strength titanium alloy finished product is: tensile strength reaches 1123MPa, and Young's modulus is at 89.8GPa; Elongation is 11.8%, and relative reduction in area remains 57%;
embodiment 3:
The heat treating method of high strength titanium alloy, described high strength titanium alloy contains according to weight percent content: Nb:31.5%, Zr:9.0%, Sn:7.4%, O:0.12%, RE:2.1%, Al:2.85%, C:1.69%, surplus is Ti.
Thermal treatment comprises the steps:
Solution heat treatment: the titanium alloy plate after cold rolling is carried out in chamber type electric resistance furnace to solution heat treatment, solid solubility temperature is 875 ℃, and soaking time is 3.2h, shrend.
Timeliness thermal treatment: be divided into following five steps: aging temp is 320 ℃, soaking time is 21min, shrend; Reheat 420 ℃ and carry out ageing treatment for the second time, aging time is 2.0h, shrend; Reheat 490 ℃ and carry out timeliness for the third time, aging time is 2.35h, shrend; Reheat 530 ℃ and carry out timeliness the 4th time, aging time is 8h, shrend; Reheat 610 ℃ and carry out timeliness the 5th time, aging time is 11h, and shrend obtains high strength titanium alloy finished product.
The various performance parameters of measuring high strength titanium alloy finished product is: tensile strength reaches 1113MPa, and Young's modulus is 85GPa; Elongation is 16%, and relative reduction in area remains 38%.
Claims (7)
1. the heat treating method of a high strength titanium alloy, it is characterized in that, described high strength titanium alloy contains according to weight percent content: Nb:28 ~ 38%, Zr:8.8 ~ 9.2%, Sn:6.2 ~ 7.6%, O:0.08 ~ 0.15%, RE:1.88 ~ 2.7%, Al:2.6 ~ 3.2%, C:1.28 ~ 2.1%, surplus is Ti;
Thermal treatment comprises the steps:
Solution heat treatment: the titanium alloy plate after cold rolling is carried out in chamber type electric resistance furnace to solution heat treatment, solid solubility temperature is 860-880 ℃, and soaking time is 2.8 ~ 4.8h, shrend;
Timeliness thermal treatment: be divided into following five steps: aging temp is 315 ~ 330 ℃, soaking time is 12 ~ 28min, shrend; Reheat 410 ~ 430 ℃ and carry out ageing treatment for the second time, aging time is 1.9 ~ 2.1h, shrend; Reheat 480 ~ 495 ℃ and carry out timeliness for the third time, aging time is 2 ~ 2.5h, shrend; Reheat 520 ~ 550 ℃ and carry out timeliness the 4th time, aging time is 5 ~ 8h, shrend; Reheat 580 ~ 620 ℃ and carry out timeliness the 5th time, aging time is 10 ~ 12h, and shrend obtains high strength titanium alloy finished product.
2. the heat treating method of high strength titanium alloy according to claim 1, is characterized in that, described high strength titanium alloy contains according to weight percent content: Nb:29.5%, Zr:9.1%, Sn:7.1%, O:0.12%, RE:2.1%, Al:2.8%, C:1.38%, surplus is Ti.
3. the heat treating method of high strength titanium alloy according to claim 1, is characterized in that, described high strength titanium alloy contains according to weight percent content: Nb:31.5%, Zr:9.0%, Sn:7.4%, O:0.12%, RE:2.1%, Al:2.85%, C:1.69%, surplus is Ti.
4. the heat treating method of high strength titanium alloy according to claim 1 and 2, it is characterized in that, after solution heat treatment He before timeliness thermal treatment, also quench and tempering heat treatment, described quenching is: described titanium alloy is heated to 980 ~ 1020 ℃ of insulation 1 ~ 2h, then comes out of the stove with oil quenching; Described tempering is: the titanium alloy after quenching is heated to 245 ~ 298 ℃ of insulation 2 ~ 3h, and the air cooling of then coming out of the stove is to room temperature.
5. the heat treating method of high strength titanium alloy according to claim 1 and 2, is characterized in that, timeliness thermal treatment is divided into following five steps: aging temp is 320 ℃, and soaking time is 18min, shrend; Reheat 420 ℃ and carry out ageing treatment for the second time, aging time is 2h, shrend; Reheat 485 ℃ and carry out timeliness for the third time, aging time is 2.2h, shrend; Reheat 535 ℃ and carry out timeliness the 4th time, aging time is 5.8h, shrend; Reheat 615 ℃ and carry out timeliness the 5th time, aging time is 11h, and shrend obtains high strength titanium alloy finished product.
6. the heat treating method of high strength titanium alloy according to claim 1 and 2, it is characterized in that, described solution heat treatment for to carry out the titanium alloy plate after cold rolling solution heat treatment in chamber type electric resistance furnace, and solid solubility temperature is 875 ℃, soaking time is 3.2h, shrend.
7. a high strength titanium alloy, is characterized in that, adopts the heat treating method described in claim 1 ~ 6 any one to prepare.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909954A (en) * | 2016-06-09 | 2016-08-31 | 王文娟 | Multifunctional selfie stick |
| CN108559935A (en) * | 2018-07-05 | 2018-09-21 | 长沙理工大学 | A kind of quick composite heat treating process improving titanium alloy mechanical property |
| CN109797314A (en) * | 2019-03-28 | 2019-05-24 | 陕西科技大学 | A kind of high niobium Ti Al alloy and preparation method thereof with nanometer-size die |
| CN112342436A (en) * | 2020-10-21 | 2021-02-09 | 吉林大学 | Nanoparticle reinforced ZTC4 titanium alloy and preparation method thereof |
| CN115522149A (en) * | 2022-11-02 | 2022-12-27 | 南通俊泰合金纤维有限公司 | Nickel-chromium resistance alloy microwire heat treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105909954A (en) * | 2016-06-09 | 2016-08-31 | 王文娟 | Multifunctional selfie stick |
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| CN112342436A (en) * | 2020-10-21 | 2021-02-09 | 吉林大学 | Nanoparticle reinforced ZTC4 titanium alloy and preparation method thereof |
| CN115522149A (en) * | 2022-11-02 | 2022-12-27 | 南通俊泰合金纤维有限公司 | Nickel-chromium resistance alloy microwire heat treatment process |
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