CN105651957A - Method for assessing laser shot peening effect - Google Patents
Method for assessing laser shot peening effect Download PDFInfo
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- CN105651957A CN105651957A CN201610003175.7A CN201610003175A CN105651957A CN 105651957 A CN105651957 A CN 105651957A CN 201610003175 A CN201610003175 A CN 201610003175A CN 105651957 A CN105651957 A CN 105651957A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
Abstract
The invention discloses a method for assessing a laser shot peening effect. The method comprises the following steps: S1) determining the scope of the depth of the residual compressive stress layer required by the material; S2) sampling and performing surface polishing, thereby causing the flatness of the surface to be below 0.1 micron; S3) adopting high-power density nano-second pulse laser for performing laser shot peening treatment on the surface to be treated of the sample; S4) removing a restraint layer and measuring the depth d of the pit; S5) calculating and acquiring the depth Lp of the residual compressive stress layer according to the empirical formula of Lp=epsilon*d+c; assessing the laser shot peening effect, and if Lp is out of the optimal peening effect scope, altering the parameters and repeating S2 to S4 till Lp is in the optimal peening effect scope. According to the method provided by the invention, the laser shot peening effect is represented by measuring the depth of the pit of a laser shot peening prefabricated metal sample; the method has the characteristics of convenience and quickness; the basis can be provided for flexibly and quickly optimizing the laser shot peening parameters.
Description
Technical field
The present invention relates to a kind of material surface processing appraisal procedure, particularly relate to a kind of method assessing laser peening strengthening effect.
Background technology
Laser peening strengthening is a kind of novel material surface strengthening technology, it is possible to obtains high-amplitude residual compressive stress layer on metallic article surface, is greatly improved the fatigue life of product, and compared with conventional blasting technology, its residual compressive stress layer is deeper. The principle of laser peening is to utilize pulse laser (energy 1 ~ 100J; pulsewidth 10 ~ 30ns) under restrained condition (moisture film or glass) with absorbed layer (aluminium foil or other materials) produce plasma blast; the pressure of intensity up to several gigapascals can be produced; this pressure is propagated to workpiece by absorbed layer; workpiece surface can be produced high-amplitude residual compressive stress; due to the protective effect of absorbed layer, surface of the work will not be subject to hot calcination. At the beginning of 21 century, Laser Peening Technology is applied to the strengthening of F101, F119 and F414 engine blade and remanufactures by the U.S..
The parameter related in laser peening strengthening is very many, mainly including laser pulse width is PW, laser power density P, laser spot diameter ��, restraint layer thickness Tc, absorber thickness Ta etc., influence each other between these parameters, relation is complicated, is therefore difficult to predict, by these parameters, the effect that laser peening is strengthened. The residual compressive stress layer depth Lp of sample after assessment laser peening strengthening, generally to adopt successively that electrobrightening and X ray measuring stress instrument carry out every time, it is necessary to carry out destructive testing, step length complicated, consuming time.
Summary of the invention
Not enough for prior art, the technical problem to be solved in the present invention is to provide a kind of method assessing laser peening strengthening effect, it is possible to assess the effect of laser peening strengthening fast and easily and for ease of selecting the parameter of laser peening strengthening.
In order to overcome prior art not enough, the technical solution used in the present invention is: a kind of method assessing laser peening strengthening effect, it comprises the following steps: S1, according to the application scenario of material and instructions for use thereof, it is determined that the scope of the residual compressive stress layer depth needed for material; S2, from pending metal material up sampling, the pending surface of this sample is carried out manual grinding and polishes, it is ensured that the flatness on the pending surface of sample lower than 0.1 micron, make laser peening strengthening sample;S3, employing high power density ps pulsed laser and ns pulsed laser, carry out laser peening intensive treatment with laser pulse width PW, laser power density P, laser spot diameter ��, restraint layer thickness Tc, absorber thickness Ta to the pending surface of sample; S4, removal restraint layer, it is ensured that the micro-pit surface formed after laser peening intensive treatment is not scratched, and carries out ultrasonic cleaning in acetone soln, measures pit depth d; S5, use pit depth d, use measuring and calculating value or empirical value as coefficient �� and offset c, rule of thumb formula Lp=�� * d+c calculates the degree of depth Lp obtaining residual compressive stress layer, and wherein �� and c is constant, and different types of metal �� and c is also different, d is pit depth, assessment laser peening strengthens the effect of this kind of metal material, if Lp does not strengthen in effective scope in the best, then and amendment laser peening strengthening parameter, repeat S2 to S4, until Lp strengthens in effective scope in the best.
A kind of improvement of the technical scheme of the method for laser peening strengthening effect is assessed as the present invention, after step S4 setting steps S4.1, sample is carried out successively electrolytic etching, and adopt X-ray diffractometer to measure the residual stress state of pit centres position, it is thus achieved that residual compressive stress layer depth Lp; S4.2, repeat S2 to S4 and S4.1, the empirical equation Lp=�� * d+c according to residual compressive stress layer depth, calculate the numerical value of coefficient �� and offset c as measuring and calculating value, and record warehouse-in be empirically worth.
Assess a kind of improvement of the technical scheme of the method for laser peening strengthening effect as the present invention, sampling size is 10mm �� 10mm �� 10mm cube.
Assess a kind of improvement of the technical scheme of the method for laser peening strengthening effect as the present invention, the power density P of described high power density pulse laser is 109W/cm2~1010W/cm2, pulse width PW is 5 ~ 30ns; Spot diameter �� after described high power density pulse laser focusing is more than 2mm.
Assess a kind of improvement of the technical scheme of the method for laser peening strengthening effect as the present invention, described restraint layer is the deionization moisture film of flowing, and its thickness Tc is 1 ~ 2mm.
Assess a kind of improvement of the technical scheme of the method for laser peening strengthening effect as the present invention, described absorbed layer is pitch-dark, polyester black tape or aluminum aluminium foil, and its thickness Ta is 80 ~ 150 ��m.
The invention has the beneficial effects as follows: when part carries out laser peening strengthening, different parts and the different parts of part, optimum residual compressive stress layer depth Lp is also different. After laser peening strengthening, the pit as deep as some tens of pm will be formed at prefabricated metal specimen surface, and the degree of depth Lp of residual compressive stress layer can calculate acquisition by formula Lp=�� * d+c, the pit depth that the present invention is formed by Laser Measurement shot-peening, calculate acquisition residual compressive stress layer depth Lp, thus characterizing the effect of laser peening strengthening, it is thus achieved that the laser peening strengthening parameter of optimization, the optimization offer foundation of parameter can be strengthened conveniently and efficiently for laser peening simultaneously.
Detailed description of the invention
Below embodiments of the present invention are specifically described.
The method that the present invention is a kind of assesses laser peening strengthening effect, it comprises the following steps: S1, according to the application scenario of material and instructions for use thereof, it is determined that the scope of the residual compressive stress layer depth needed for material; S2, from pending metal material up sampling, the pending surface of this sample is carried out manual grinding and polishes, it is ensured that the flatness on the pending surface of sample lower than 0.1 micron, make laser peening strengthening sample;S3, employing high power density ps pulsed laser and ns pulsed laser, carry out laser peening intensive treatment with laser pulse width PW, laser power density P, laser spot diameter ��, restraint layer thickness Tc, absorber thickness Ta to the pending surface of sample; S4, removal restraint layer, it is ensured that the micro-pit surface formed after laser peening intensive treatment is not scratched, and carries out ultrasonic cleaning in acetone soln, measures pit depth d; S5, use pit depth d, use measuring and calculating value or empirical value as coefficient �� and offset c, rule of thumb formula Lp=�� * d+c calculates the degree of depth Lp obtaining residual compressive stress layer, and wherein �� and c is constant, and different types of metal �� and c is also different, d is pit depth, assessment laser peening strengthens the effect of this kind of metal material, if Lp does not strengthen in effective scope in the best, then and amendment laser peening strengthening parameter, repeat S2 to S4, until Lp strengthens in effective scope in the best. When part carries out laser peening strengthening, different parts and the different parts of part, optimum residual compressive stress layer depth Lp is also different. After laser peening strengthening, the pit as deep as some tens of pm will be formed at prefabricated metal specimen surface, inventor is found by the lot of experiments of early stage, when laser spot diameter more than 2mm, sample pit depth at 3 ~ dmax ��m time, residual compressive stress layer depth Lp can calculate acquisition by formula Lp=�� * d+c, the pit depth that the present invention is formed by Laser Measurement shot-peening, calculate acquisition residual compressive stress layer depth Lp, thus characterizing the effect of laser peening strengthening, it is thus achieved that the laser peening strengthening parameter of optimization. The present invention passes through the pit depth of Laser Measurement shot peening strengthening prefabricated metal sample and characterizes the effect that laser peening is strengthened, and has conveniently feature, can strengthen the optimization offer foundation of parameter flexibly rapidly for laser peening simultaneously.
After laser peening strengthening, to form the pit of deep big some tens of pm at specimen surface, principles of the invention is to estimate the degree of depth of residual compressive stress layer by measuring the degree of depth of pit, thus characterizing the effect of laser peening strengthening, shown by the great many of experiments of early stage, when the power density P of laser is 109W/cm2~1010W/cm2Pulse width PW be spot diameter �� after 5 ~ 30ns, laser focusing more than 2mm, restraint layer thickness Tc to be 1 ~ 2mm, absorber thickness Ta be 80 ~ 150 ��m, sample pit depth is 1 ~ 18 ��m after laser peening strengthening time, the predictor formula Lp=�� * d+c adopting the present invention to propose, has good prediction effect. Improve speed and convenience that certain material is estimated, it is possible to obtain the technological parameter corresponding to depth requirements of certain batch of same material correspondence each residual compressive stress layer required rapidly, provide technological parameter for following process simultaneously.
More preferably, after step S4 setting steps S4.1, sample is carried out successively electrolytic etching, and adopt X-ray diffractometer measure pit centres position residual stress state, it is thus achieved that residual compressive stress layer depth Lp, S4.2, repeat S2 to S4 and S4.1, empirical equation Lp=�� * d+c according to residual compressive stress layer depth, calculate the numerical value of coefficient �� and offset c as measuring and calculating value, and record warehouse-in be empirically worth, thus obtaining coefficient and the offset of empirical equation, it is easy to follow-up to measure pit depth d and coefficient of utilization and offset can carry out quickly measuring and calculating and draw residual compressive stress layer depth Lp value, improve speed and the convenience of assessment, obtain the technological parameter corresponding to depth requirements of certain batch of same material correspondence each residual compressive stress layer required rapidly, technological parameter is provided for following process.
More preferably, sampling size is 10mm �� 10mm �� 10mm cube, facilitates measurement and the calculating in pretreatment and later stage, also embodies the partial result of laser peening strengthening well.
More preferably, the power density P of described high power density pulse laser is 109W/cm2~1010W/cm2, pulse width PW is 5 ~ 30ns; Spot diameter �� after described high power density pulse laser focusing is more than 2mm.
More preferably, described restraint layer is the deionization moisture film of flowing, and its thickness Tc is 1 ~ 2mm.
More preferably, described absorbed layer is pitch-dark, polyester black tape or aluminum aluminium foil, and its thickness Ta is 80 ~ 150 ��m.
It is further detailed below in conjunction with specific embodiment.
Embodiment one:
Certain h type engine h compressor blade blade root is carried out laser peening strengthening, and pending metal material is LY2 aluminium alloy, and after heat treatment tensile strength is 430MPa, LY2 aluminium alloy dmaxBeing 18 ��m, �� is 0.095, for-0.1.
Step one, according to requirements, it is desirable to the residual compressive stress degree of depth obtained at process position is 1.0mm ~ 1.2mm.
Step 2, from pending metal material up sampling, sampling size is 10mm �� 10mm �� 10mm cube, and the pending surface of this sample is carried out manual grinding and polished, ensure that the flatness on the pending surface of sample is lower than 0.1 micron, make laser peening strengthening sample.
Step 3, with laser pulse width be 10ns, laser power density 3.5 �� 109W/cm2, laser spot diameter 2.5mm, restraint layer thickness 1mm, absorbed layer material be pitch-dark, absorber thickness be 100 ��m, the pending surface of sample is carried out laser peening intensive treatment.
Step 4, removes restraint layer pitch-dark, it is ensured that the micro-pit surface formed after laser peening intensive treatment is not scratched, and carries out ultrasonic cleaning in acetone soln, and measuring pit depth d is 10.5 ��m.
Step 5, by pit depth, rule of thumb formula Lp=0.095*d-0.1, can be calculated the degree of depth Lp of residual compressive stress layer is 0.898mm, it is determined that this parameter is not strengthened in effective scope in the best, and laser power density is increased to 4 �� 109W/cm2, all the other parameter constants, repeat step 2 to step 4, recording pit depth is 12.8 ��m, and calculating the degree of depth Lp obtaining residual compressive stress layer is 1.116mm.
Step 6, is 4 �� 10 to power density9W/cm2Time sample carry out successively electrolytic etching, every layer of corrosion depth is 0.05mm and adopts X-ray diffractometer to measure the residual stress state of pit centres position, and the residual compressive stress layer depth Lp recorded is 1.05mm.
Power density is 4 �� 109W/cm2Time, the Lp that empirical equation obtains and experiment measuring Lp error are 6.2%, and this parameter is the laser peening strengthening parameter optimized.
Embodiment two:
Certain type turbine blade edge is carried out laser peening strengthening, and pending metal material is 316 rustless steels, and after heat treatment tensile strength is 360MPa, 304 rustless steel dmaxBeing 18 ��m, �� is 0.074, c is 0.1.
Step one, according to requirements, it is desirable to the residual compressive stress degree of depth obtained at process position is 1.2mm ~ 1.4mm.
Step 2, from pending metal material up sampling, sampling size is 10mm �� 10mm �� 10mm cube, and the pending surface of this sample is carried out manual grinding and polished, ensure that the flatness on the pending surface of sample is lower than 0.1 micron, make laser peening strengthening sample.
Step 3, with laser pulse width be 15ns, laser power density 2.5 �� 109W/cm2, laser spot diameter 3mm, restraint layer thickness 1mm, absorbed layer material be polyester black tape, absorber thickness be 150 ��m, the pending surface of sample is carried out laser peening intensive treatment.
Step 4, removes restraint layer polyester black tape, it is ensured that the micro-pit surface formed after laser peening intensive treatment is not scratched, and carries out ultrasonic cleaning in acetone soln, and measuring pit depth d is 15.5 ��m.
Step 5, by pit depth, rule of thumb formula Lp=0.074*d+0.1, can be calculated the degree of depth Lp of residual compressive stress layer is 1.247mm, it is determined that this parameter is the strengthening parameter optimized.
Step 6, carries out successively electrolytic etching to sample, and every layer of corrosion depth is 0.05mm the residual stress state adopting X-ray diffractometer to measure pit centres position, and the residual compressive stress layer depth Lp recorded is 1.3mm.
The Lp that empirical equation obtains and experiment measuring Lp error are 4.1%, and this parameter is the laser peening strengthening parameter optimized.
Embodiment three:
Certain type compressor blade leaf basin edge is carried out laser peening strengthening, and pending metal material is Ti6Lv4Vi titanium alloy, and after heat treatment tensile strength is 820MPa. Ti6Lv4Vi titanium alloy dmaxBeing 16 ��m, �� is 0.08, c is-0.05.
Step one, according to requirements, it is desirable to the residual compressive stress degree of depth obtained at process position is 0.5mm ~ 0.6mm.
Step 2, from pending metal material up sampling, sampling size is 10mm �� 10mm �� 10mm cube, and the pending surface of this sample is carried out manual grinding and polished, ensure that the flatness on the pending surface of sample is lower than 0.1 micron, make laser peening strengthening sample.
Step 3, with laser pulse width be 15ns, laser power density 3.5 �� 109W/cm2, laser spot diameter 3mm, restraint layer thickness 1mm, absorbed layer material be aluminium foil, absorber thickness be 150 ��m, the pending surface of sample is carried out laser peening intensive treatment.
Step 4, removes restraint layer aluminium foil, it is ensured that the micro-pit surface formed after laser peening intensive treatment is not scratched, and carries out ultrasonic cleaning in acetone soln, and measuring pit depth d is 5.5 ��m.
Step 5, by pit depth, rule of thumb formula Lp=0.105*d-0.05, can be calculated the degree of depth Lp of residual compressive stress layer is 0.523mm, it is determined that this parameter is the strengthening parameter optimized.
Step 6, carries out successively electrolytic etching to sample, and every layer of corrosion depth is 0.05mm the residual stress state adopting X-ray diffractometer to measure pit centres position, and the residual compressive stress layer depth Lp recorded is 0.55mm.
The Lp that empirical equation obtains and experiment measuring Lp error are 3.5%, and this parameter is the laser peening strengthening parameter optimized.
Above disclosed it is only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention, the equivalent variations therefore made according to the present patent application the scope of the claims with this, still belong to the scope that the present invention contains.
Claims (6)
1. the method assessing laser peening strengthening effect, it is characterised in that comprise the following steps:
S1, according to the application scenario of material and instructions for use thereof, it is determined that the scope of the residual compressive stress layer depth needed for material;
S2, from pending metal material up sampling, the pending surface of this sample is carried out manual grinding and polishes, it is ensured that the flatness on the pending surface of sample lower than 0.1 micron, make laser peening strengthening sample;
S3, employing high power density ps pulsed laser and ns pulsed laser, carry out laser peening intensive treatment with laser pulse width PW, laser power density P, laser spot diameter ��, restraint layer thickness Tc, absorber thickness Ta to the pending surface of sample;
S4, removal restraint layer, it is ensured that the micro-pit surface formed after laser peening intensive treatment is not scratched, and carries out ultrasonic cleaning in acetone soln, measures pit depth d;
S5, use pit depth d, use measuring and calculating value or empirical value as coefficient �� and offset c, rule of thumb formula Lp=�� * d+c calculates the degree of depth Lp obtaining residual compressive stress layer, and wherein �� and c is constant, and different types of metal �� and c is also different, d is pit depth, assessment laser peening strengthens the effect of this kind of metal material, if Lp does not strengthen in effective scope in the best, then and amendment laser peening strengthening parameter, repeat S2 to S4, until Lp strengthens in effective scope in the best.
2. the method for assessment laser peening according to claim 1 strengthening effect, it is characterized in that: after step S4 setting steps S4.1, sample is carried out successively electrolytic etching, and adopt X-ray diffractometer to measure the residual stress state of pit centres position, it is thus achieved that residual compressive stress layer depth Lp; S4.2, repeat S2 to S4 and S4.1, the empirical equation Lp=�� * d+c according to residual compressive stress layer depth, calculate the numerical value of coefficient �� and offset c as measuring and calculating value, and record warehouse-in be empirically worth.
3. the method for assessment laser peening according to claim 1 strengthening effect, it is characterised in that: sampling size is 10mm �� 10mm �� 10mm cube.
4. the method for assessment laser peening according to claim 1 strengthening effect, it is characterised in that: the power density P of described high power density pulse laser is 109W/cm2~1010W/cm2, pulse width PW is 5 ~ 30ns; Spot diameter �� after described high power density pulse laser focusing is more than 2mm.
5. the method for assessment laser peening according to claim 1 strengthening effect, it is characterised in that: described restraint layer is the deionization moisture film of flowing, and its thickness Tc is 1 ~ 2mm.
6. the method for assessment laser peening according to claim 1 strengthening effect, it is characterised in that: described absorbed layer is pitch-dark, polyester black tape or aluminum aluminium foil, and its thickness Ta is 80 ~ 150 ��m.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108611484A (en) * | 2018-08-08 | 2018-10-02 | 广东工业大学 | A kind of metal blade laser shock peening method free of surface defects without deformation |
| CN110749300A (en) * | 2019-10-30 | 2020-02-04 | 中国航空制造技术研究院 | Pit quality evaluation method for laser shock peening metal material surface |
| CN111055086A (en) * | 2019-12-27 | 2020-04-24 | 北京航空航天大学 | Surface modification and residual stress regulation and control method for trace removal after shot peening |
| CN111748677A (en) * | 2020-06-10 | 2020-10-09 | 中国航发北京航空材料研究院 | Method for evaluating shot peening effect of turbine disk |
| CN112025561A (en) * | 2020-08-28 | 2020-12-04 | 中国航发贵阳发动机设计研究所 | Method for determining surface integrity requirement of aeroengine turbine disc |
| CN115418473A (en) * | 2022-08-12 | 2022-12-02 | 河南科技大学 | Processing method for carrying out laser shot peening strengthening on bearing surface |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3615560A1 (en) * | 1986-05-09 | 1987-11-12 | Bbc Brown Boveri & Cie | Method of machine-related and at the same time material-related quality control when performing shot-peening of metallic surfaces |
| JPH0843326A (en) * | 1994-08-01 | 1996-02-16 | Hitachi Metals Ltd | Method for evaluating shot peening |
| US20040262276A1 (en) * | 2003-06-27 | 2004-12-30 | Davis Brian Michael | Real time laser shock peening quality assurance by natural frequency analysis |
| CN101093205A (en) * | 2006-06-22 | 2007-12-26 | 株式会社不二制作所 | Nondestructive inspection method and apparatus for a surface processed by shot peening |
| CN104133037A (en) * | 2013-05-03 | 2014-11-05 | 波音公司 | System and method for predicting distortion of a workpiece resulting from a peening machine process |
| CN104245188A (en) * | 2012-06-27 | 2014-12-24 | 新东工业株式会社 | Shot peening method, shot peening evaluation method, and shot peening evaluation assembly structure |
-
2016
- 2016-01-06 CN CN201610003175.7A patent/CN105651957B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3615560A1 (en) * | 1986-05-09 | 1987-11-12 | Bbc Brown Boveri & Cie | Method of machine-related and at the same time material-related quality control when performing shot-peening of metallic surfaces |
| JPH0843326A (en) * | 1994-08-01 | 1996-02-16 | Hitachi Metals Ltd | Method for evaluating shot peening |
| US20040262276A1 (en) * | 2003-06-27 | 2004-12-30 | Davis Brian Michael | Real time laser shock peening quality assurance by natural frequency analysis |
| CN101093205A (en) * | 2006-06-22 | 2007-12-26 | 株式会社不二制作所 | Nondestructive inspection method and apparatus for a surface processed by shot peening |
| CN104245188A (en) * | 2012-06-27 | 2014-12-24 | 新东工业株式会社 | Shot peening method, shot peening evaluation method, and shot peening evaluation assembly structure |
| CN104133037A (en) * | 2013-05-03 | 2014-11-05 | 波音公司 | System and method for predicting distortion of a workpiece resulting from a peening machine process |
Non-Patent Citations (2)
| Title |
|---|
| 叶鸿伟: "《激光喷丸强化诱导的三维残余应力场分析及其评价》", 31 December 2010 * |
| 黄舒: "《受控激光喷丸强化中残余应力的表征与试验研究》", 31 December 2008 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108611484A (en) * | 2018-08-08 | 2018-10-02 | 广东工业大学 | A kind of metal blade laser shock peening method free of surface defects without deformation |
| CN110749300A (en) * | 2019-10-30 | 2020-02-04 | 中国航空制造技术研究院 | Pit quality evaluation method for laser shock peening metal material surface |
| CN110749300B (en) * | 2019-10-30 | 2021-03-05 | 中国航空制造技术研究院 | Pit quality evaluation method for laser shock peening metal material surface |
| CN111055086A (en) * | 2019-12-27 | 2020-04-24 | 北京航空航天大学 | Surface modification and residual stress regulation and control method for trace removal after shot peening |
| CN111055086B (en) * | 2019-12-27 | 2020-10-16 | 北京航空航天大学 | Surface modification and residual stress regulation and control method for trace removal after shot peening |
| CN111748677A (en) * | 2020-06-10 | 2020-10-09 | 中国航发北京航空材料研究院 | Method for evaluating shot peening effect of turbine disk |
| CN111748677B (en) * | 2020-06-10 | 2022-02-11 | 中国航发北京航空材料研究院 | Method for evaluating shot peening effect of turbine disk |
| CN112025561A (en) * | 2020-08-28 | 2020-12-04 | 中国航发贵阳发动机设计研究所 | Method for determining surface integrity requirement of aeroengine turbine disc |
| CN115418473A (en) * | 2022-08-12 | 2022-12-02 | 河南科技大学 | Processing method for carrying out laser shot peening strengthening on bearing surface |
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