Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel
Fatigue life prediction for the notched components is an essential step within the design process of machines. Fatigue strength and life prediction of 40Cr notched steel before and after shot peening were studied. Fatigue fracture of specimens treated by three shot peening intensity parameters was d...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/9/681 |
| _version_ | 1818905257245147136 |
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| author | Xiaohui Zhao Zhaoyi Sun Desheng Xu Yu Liu |
| author_facet | Xiaohui Zhao Zhaoyi Sun Desheng Xu Yu Liu |
| author_sort | Xiaohui Zhao |
| collection | DOAJ |
| description | Fatigue life prediction for the notched components is an essential step within the design process of machines. Fatigue strength and life prediction of 40Cr notched steel before and after shot peening were studied. Fatigue fracture of specimens treated by three shot peening intensity parameters was discussed. The life prediction considering residual stress, work hardening and surface roughness caused by shot peening was analyzed. The results indicated that fatigue strength was obviously improved after shot peening and the improvement effect was gradually enhanced with the increase of shot peening intensity. The predicted values based on Rz coefficient showed a good correspondence with the experimental data. |
| first_indexed | 2024-12-19T21:20:27Z |
| format | Article |
| id | doaj.art-2d7436beaf05415bb05b4b8c433272d0 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-19T21:20:27Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-2d7436beaf05415bb05b4b8c433272d02022-12-21T20:05:15ZengMDPI AGMetals2075-47012018-08-018968110.3390/met8090681met8090681Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched SteelXiaohui Zhao0Zhaoyi Sun1Desheng Xu2Yu Liu3Key Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun 130025, ChinaKey Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun 130025, ChinaKey Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun 130025, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, ChinaFatigue life prediction for the notched components is an essential step within the design process of machines. Fatigue strength and life prediction of 40Cr notched steel before and after shot peening were studied. Fatigue fracture of specimens treated by three shot peening intensity parameters was discussed. The life prediction considering residual stress, work hardening and surface roughness caused by shot peening was analyzed. The results indicated that fatigue strength was obviously improved after shot peening and the improvement effect was gradually enhanced with the increase of shot peening intensity. The predicted values based on Rz coefficient showed a good correspondence with the experimental data.http://www.mdpi.com/2075-4701/8/9/681shot peeninglocal stressfatigue limitstress gradient |
| spellingShingle | Xiaohui Zhao Zhaoyi Sun Desheng Xu Yu Liu Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel Metals shot peening local stress fatigue limit stress gradient |
| title | Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel |
| title_full | Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel |
| title_fullStr | Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel |
| title_full_unstemmed | Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel |
| title_short | Local Fatigue Strength Evaluation of Shot Peened 40Cr Notched Steel |
| title_sort | local fatigue strength evaluation of shot peened 40cr notched steel |
| topic | shot peening local stress fatigue limit stress gradient |
| url | http://www.mdpi.com/2075-4701/8/9/681 |
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