온간 쇼트피닝에 의한 압축응력의 변화
The requirements of getting spring steel with higher fatigue strength have been increased to achieve the weight reduction of a vehicle. As the possible increment in fatigue strength by using the conventional shot peening treatment is found to be limited, it is necessary to modify the shot peening tr...
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| Published in | 한국표면공학회지, 37(5) pp. 273 - 278 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | Korean |
| Published |
한국표면공학회
01.10.2004
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1225-8024 2288-8403 |
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| Summary: | The requirements of getting spring steel with higher fatigue strength have been increased to achieve the weight reduction of a vehicle. As the possible increment in fatigue strength by using the conventional shot peening treatment is found to be limited, it is necessary to modify the shot peening treatment. In this study, to investigate the effects of warm shot peening on increasing fatigue strength, tests are conducted on spring steel SAE9524. By the results of rotating bending fatigue tests, the fatigue strength increases up to 23.8% in warm shot peening specimens at 200oC compared with conventional shot peening. The major reason why the warm shot peening is effective to the improvement of fatigue strength is the increment of the compressive residual stress, which can be effectively formed by shot peening under the condition of warm temperature than room temperature. KCI Citation Count: 0 |
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| Bibliography: | G704-000261.2004.37.5.006 |
| ISSN: | 1225-8024 2288-8403 |