CN102400086B - Titanium alloy oxygen permeation surface strengthening treatment method - Google Patents
Titanium alloy oxygen permeation surface strengthening treatment method Download PDFInfo
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- CN102400086B CN102400086B CN2011103786737A CN201110378673A CN102400086B CN 102400086 B CN102400086 B CN 102400086B CN 2011103786737 A CN2011103786737 A CN 2011103786737A CN 201110378673 A CN201110378673 A CN 201110378673A CN 102400086 B CN102400086 B CN 102400086B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Abstract
The invention discloses a titanium alloy oxygen permeation surface strengthening treatment method, which comprises the following steps of: putting a titanium alloy material into a treated medium, heating the titanium alloy material to the temperature of between 700 and 850 DEG C in atmosphere in a common air furnace, and preserving the heat for 30 to 6,000 minutes; and forming an oxygen solid solution hardening layer on the surface of a titanium alloy test piece by using the method, wherein the depth of the oxygen solid solution hardening layer is 80 to 120 microns, and the medium is ZrO2 powder. The surface treatment method is simple, surface strengthening of the titanium alloy can be realized by only one step, the hardness of the titanium alloy surface layer can reach over HV780, the solid solution hardening depth of oxygen can reach 100 microns, and good effects are achieved.
Description
Technical field
The present invention relates to a kind of metal surface treating method, be specifically related to a kind of titanium alloy oxygen permeation surface strengthening treatment method.
Background technology
Proportion is little, specific tenacity is high because having for titanium alloy, the performance of corrosion resistance excellent and good a series of excellences such as biocompatibility is used widely in the national defense industry such as Aeronautics and Astronautics and civilian industry.But because its hardness is low, cause that a biggest obstacle is exactly the surface abrasion resistance problem in application process.The use cost of product that causes easy to wear of component increases greatly.In addition, because titanium alloy is not wear-resistant, make its wearing and tearing aggravation in use, thereby have a strong impact on the safety and reliability of whole aircraft or locomotive.
Oozing the oxygen processing is a kind of method that improves titanium alloy surface hardness, a kind of method of osmosizing oxygen to Ti alloy is disclosed as Chinese invention patent application CN1363713A, it adopts sand or carbon dust is medium, be incubated 2 ~ 14 hours under 700 ~ 850 ℃, then remove the oxide film of titanium alloy surface, expose α phase hardened layer.Yet there is the caducous problem of oxide film embrittlement in the aforesaid method treat surface, need be aided with mechanical means and remove, and hardened layer is shallow.Chinese invention patent application CN1632158A discloses a kind of titanium alloy surface and has oozed oxygen-solid solution diffusion complex intensifying treatment process, and its medium that adopts is MgO, Al
2O
3, SiO
2Or carbon dust, its method is: first preoxidation under atmosphere, and then spread in airtight container and ooze oxygen, thereby realize solution strengthening.Yet aforesaid method need to adopt enclosed appts, and this enclosed appts need adopt superalloy to make, and sealing adopts laser welding or other welding means to weld, thereby has the problem of sealing difficulty and the opening that is disposed again, operation inconvenience.
Therefore, the surface treatment method of titanium alloy of a kind of easy handling of exploitation to improve the surface hardness of titanium alloy, has positive realistic meaning.
Summary of the invention
The object of the invention is to provide a kind of titanium alloy oxygen permeation surface strengthening treatment method.
For achieving the above object, the technical solution used in the present invention is: a kind of titanium alloy oxygen permeation surface strengthening treatment method is placed in treated medium with titanium alloy material, under air atmosphere, be heated to 700 ~ 850 ℃ in the normal air stove, insulation 30 ~ 6000 min; Utilize the method at titanium alloy material surface formation oxygen solution hardening layer, the degree of depth of described oxygen solution hardening layer is 80 ~ 120 μ m; Described medium is ZrO
2Powder.
The present invention carries out surperficial membrane-free oxidizing to titanium alloy and strengthens, thereby work-ing life of significant prolongation titanium alloy more makes it obtain larger using value.
Described titanium alloy material is placed in treated medium, refers to that the titanium alloy that will intend processing uses ZrO
2Powder coated is got up, and then is placed in airtight high temperature resistant jar, and jar can be metal, can be also nonmetallic, as jar, the ceramic pot that resistant to elevated temperatures metal is made, graphite tank.
In technique scheme, described treated medium is neutral.
In technique scheme, described ZrO
2The granularity of powder medium is 360 ~ 10 orders.
In technique scheme, described medium is processed through acid-scrubbing cleaning.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. surface treatment method of the present invention is simple, as long as a step can be realized the surface strengthening of titanium alloy, more than the hardness that has realized the titanium alloy top layer reaches HV780, and the solution hardening degree of depth of oxygen can reach 100 μ m, obtained significant effect.
2. method of the present invention can be carried out integral body, even, one intensive treatment processing to titanium alloy material, only need to again make a larger container of volume and get final product, thereby can be applied to of all kinds, the complex-shaped titanium alloy component of shape that use in the fields such as aerospace, guided missile, automobile.
3. method of the present invention can be oozed the oxygen intensive treatment to titanium alloy test specimen surface, with this microhardness that improves titanium alloy surface, reaches the purpose of reinforcement; Its hardening effect is good, even, and depth of penetration is large and can control, and has greatly extended the work-ing life of part.
4. treatment process easy handling of the present invention, when titanium alloy surface oozed oxygen and strengthens, its surface color can change; And do not need to use the complicated equipment such as vacuum chamber, cost is low, has very large economic benefit.
Description of drawings
Fig. 1 is the sectional view that oozes the oxygen strengthening layer of titanium alloy in the embodiment of the present invention one;
Fig. 2 is the distribution plan that oozes oxygen strengthening layer and section Ti thereof, O element of titanium alloy in the embodiment of the present invention one;
Fig. 3 is the sectional view that oozes the oxygen strengthening layer of titanium alloy in the embodiment of the present invention two;
Fig. 4 is the distribution plan that oozes oxygen strengthening layer and section Ti thereof, O element of titanium alloy in the embodiment of the present invention two;
Fig. 5 is the Hardness Distribution graphic representation that oozes the oxygen strengthening layer of titanium alloy in the embodiment of the present invention one;
Fig. 6 is the Hardness Distribution graphic representation that oozes the oxygen strengthening layer of titanium alloy in the embodiment of the present invention two;
Fig. 7 is that the TA2 titanium alloy is not through processing front top layer XRD material phase analysis curve;
Fig. 8 is the top layer XRD material phase analysis curve that oozes the oxygen strengthening layer of titanium alloy in the embodiment of the present invention one;
Fig. 9 is the top layer XRD material phase analysis curve that oozes the oxygen strengthening layer of titanium alloy in the embodiment of the present invention two;
Figure 10 ~ 11 are the surface chart that oozes the oxygen strengthening layer of titanium alloy in Comparative Examples one of the present invention;
Figure 12 is the surface chart that oozes the oxygen strengthening layer of titanium alloy in Comparative Examples two of the present invention;
Figure 13 is the surface chart that oozes the oxygen strengthening layer of titanium alloy in Comparative Examples two of the present invention;
Figure 14 is the distribution plan that oozes oxygen strengthening layer and section Ti thereof, O element of titanium alloy in Comparative Examples two of the present invention;
Figure 15 is the surface chart that oozes the oxygen strengthening layer of titanium alloy in Comparative Examples three of the present invention; (MgO medium during 800 ℃ of insulation 8h)
Figure 16 is the surface chart that oozes the oxygen strengthening layer of titanium alloy in Comparative Examples three of the present invention; (MgO medium during 850 ℃ of insulation 3h)
Figure 17 is the friction surface figure of titanium alloy in Comparative Examples three of the present invention; (MgO medium during 800 ℃ of insulation 8h)
Figure 18 is the friction surface figure of titanium alloy in Comparative Examples three of the present invention; (MgO medium during 850 ℃ of insulation 3h)
Figure 19 is the friction surface figure of titanium alloy in Comparative Examples one of the present invention;
Figure 20 is the friction surface figure of titanium alloy in the present invention; (Al during 850 ℃ of insulation 3h
2O
3Medium)
Figure 21 is the friction surface figure of titanium alloy in the embodiment of the present invention one;
Figure 22 is the friction surface figure of titanium alloy in the embodiment of the present invention two.
Embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment one
A kind of titanium alloy oxygen permeation surface strengthening treatment method, the material of employing is the TA2 titanium alloy, concrete steps are as follows: titanium alloy material is placed in the medium ZrO that processes through acid-scrubbing cleaning
2In, medium ZrO
2Granularity is 200 orders ~ 360 orders, and heating is 800 ℃ in the normal air stove, insulation 8h(480min), then close the stove power supply, allow sample and jar furnace cooling; Removing the sample visible surface has thinner oxide film to exist, the variable color blackening; The microhardness of oozing the oxygen strengthening layer can reach HV780, and depth of penetration can reach 100 μ m; Smooth surface.
Be depicted as cross section, distribution diagram of element, hardness distribution and the XRD material phase analysis result thereof of oozing oxygen intensive treatment oxygen diffusion layer as Fig. 1,2,5,8.As a comparison, Fig. 7 is the XRD analysis curve on TA top layer when process is not processed, as seen its curve distribution slight change.
Embodiment two
A kind of titanium alloy oxygen permeation surface strengthening treatment method, difference from Example 1 is: titanium alloy material is placed in the medium ZrO that processes through acid-scrubbing cleaning
2In, medium ZrO
2Granularity is 200 orders ~ 360 orders, and heating is 850 ℃ in the normal air stove, is incubated 3 hours (180min), then closes the stove power supply, allows sample and jar furnace cooling; The surface forms the minute quantity oxide film; The microhardness of oozing the oxygen strengthening layer can reach HV750, and depth of penetration can reach 100 μ m; Smooth surface.
Be depicted as cross section, distribution diagram of element, hardness distribution and the XRD material phase analysis result thereof of oozing oxygen intensive treatment oxygen diffusion layer as Fig. 3,4,6,9.As a comparison, Fig. 7 is the XRD analysis curve on TA top layer when process is not processed, as seen its curve distribution slight change.
Comparative Examples one
With reference to the method for the disclosed osmosizing oxygen to Ti alloy of Chinese invention patent application CN1363713A in background technology, adopt Al
2O
3Carry out 800 ℃ of insulation 8h and observe the interface, as shown in Figure 10 ~ 11: the visible oxide film that forms and the non-constant of bonding force of matrix, oxide film and matrix present distinct state, must before use with its removal, namely must adopt mechanical means that its oxide film is removed.
Comparative Examples two
Adopt SiO
2Ooze oxygen during for medium and strengthen, see Figure 12,13, SiO when wherein Figure 12 is 800 ℃ of insulation 8h
2Interface during for medium, there is more hole in visible oxide film, and layering.There is the drawback that hole is more and hole is larger equally in interface when Figure 13 is 850 ℃ of insulation 3h.Figure 14 is the distribution plan that oozes oxygen strengthening layer and section Ti thereof, O element of titanium alloy.
Comparative Examples three
Ooze oxygen when adopting MgO to be medium and strengthen, see Figure 15,16, the interface when when wherein Figure 15 is 800 ℃ of insulation 8h, MgO is medium, there is more hole in visible oxide film.There is the drawback that hole is more and hole is larger equally in interface when Figure 16 is 850 ℃ of insulation 3h.
Above-described embodiment and Comparative Examples are done rub(bing)test, and when Figure 17 ~ 22 are respectively 800 ℃ for the treatment of temps insulation 8h, during 850 ℃ of insulation 3h, medium is respectively MgO, Al
2O
3And ZrO
2The surface sweeping electronic image of the abrasion mark that the Shi Jinhang rub(bing)test obtains, the wherein included vestige of zone for causing after rubbing under identical test load of braces; This regional width is wider or the degree of depth is darker, and surface abrasion resistance is poorer.
As seen, be ZrO oozing oxygen medium from Figure 17 ~ 22
2The time, the width of abrasion mark is the narrowest, and the degree of depth is also the most shallow; And be MgO, Al at medium
2O
3The time, under same condition, the width of abrasion mark or the degree of depth are all than being ZrO at medium
2The time want wide or dark; Show and adopt ZrO of the present invention
2The titanium alloy material that media processes obtains has excellent wear resisting property, has good superiority.
Claims (4)
1. a titanium alloy oxygen permeation surface strengthening treatment method, is characterized in that: titanium alloy material is placed in treated medium, under air atmosphere, is heated to 700 ~ 850 ℃ in the normal air stove, insulation 30 ~ 6000 min; At titanium alloy material surface formation oxygen solution hardening layer, the degree of depth of described oxygen solution hardening layer is 80 ~ 120 μ m; Described medium is ZrO
2Powder.
2. titanium alloy oxygen permeation surface strengthening treatment method according to claim 1, it is characterized in that: described treated medium is for neutral.
3. titanium alloy oxygen permeation surface strengthening treatment method according to claim 1, is characterized in that: described ZrO
2The granularity of powder medium is 360 ~ 10 orders.
4. titanium alloy oxygen permeation surface strengthening treatment method according to claim 1, it is characterized in that: described medium is processed through acid-scrubbing cleaning.
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| CN2011103786737A CN102400086B (en) | 2011-11-24 | 2011-11-24 | Titanium alloy oxygen permeation surface strengthening treatment method |
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| CN2011103786737A CN102400086B (en) | 2011-11-24 | 2011-11-24 | Titanium alloy oxygen permeation surface strengthening treatment method |
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| CN105349934B (en) * | 2015-07-03 | 2018-03-20 | 苏州大学 | A kind of method for surface hardening of titanium alloy |
| CN105019000A (en) * | 2015-07-04 | 2015-11-04 | 西安赛福斯材料防护有限责任公司 | Preparation method of oxygen permeation hardening coating layers on titanium and titanium alloy surfaces |
| CN106637049A (en) * | 2017-01-03 | 2017-05-10 | 中山源谥真空科技有限公司 | Pure titanium or titanium alloy and surface hardening method thereof |
| CN115074659B (en) * | 2022-06-08 | 2024-01-26 | 希诺股份有限公司 | Penetrating agent for local strengthening of surface of thin-wall titanium product and strengthening process thereof |
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| JP2003073796A (en) * | 2001-09-03 | 2003-03-12 | Fuji Oozx Inc | Surface treatment method for titanium-based material |
| CN1146673C (en) * | 2001-12-06 | 2004-04-21 | 沈阳黎明航空发动机集团公司 | Process for osmosizing oxygen to Ti alloy |
| CN1314827C (en) * | 2004-12-08 | 2007-05-09 | 中国科学院金属研究所 | Method for composite surface strengthening treatment of titanium alloy by oxygen infiltration-solid solution diffusion |
| CN102230175A (en) * | 2011-07-10 | 2011-11-02 | 西北有色金属研究院 | Surface strengthening method of metal material |
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Address after: Suzhou City, Jiangsu province 215137 Xiangcheng District Ji Road No. 8 Patentee after: Soochow University Address before: 215123 Suzhou City, Suzhou Province Industrial Park, No. love road, No. 199 Patentee before: Soochow University |
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Granted publication date: 20130619 Termination date: 20181124 |