| 引用本文: | 王欣， 钟平， 陆峰.喷丸强化对12Cr马氏体热强钢疲劳性能的影响[J].中国表面工程,2012,25(2):81~85 |
| WANG Xin, ZHONG Ping, LU Feng.Effect of Shot Peening on the Fatigue Property of 12Cr Martensitic Refractory Steel[J].China Surface Engineering,2012,25(2):81~85 |
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| 摘要: |
| 对12Cr马氏体热强钢1Cr12Ni3Mo2VN进行不同工艺的喷丸。研究了不同工艺产生的残余应力场分布和1Cr12Ni3Mo2VN钢室温及高温疲劳性能。结果表明，喷丸强度和表面覆盖率共同影响1Cr12Ni3Mo2VN钢残余应力场分布；1Cr12Ni3Mo2VN钢室温疲劳性能主要与喷丸强度有关，经过特定工艺喷丸后，室温疲劳性能提高了6倍；表面覆盖率对1Cr12Ni3Mo2VN钢室温疲劳性能影响较小，对高温疲劳性能具有明显的影响，经过0.12A、100%覆盖率喷丸后，高温疲劳性能提高了2倍，表面覆盖率升高将导致1Cr12Ni3Mo2VN钢高温疲劳性能下降，当覆盖率提高到400%，高温疲劳寿命基本没有提高，与原始试样相当。 |
| 关键词: 残余应力 喷丸 室温疲劳 高温疲劳 表面覆盖率 |
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| Effect of Shot Peening on the Fatigue Property of 12Cr Martensitic Refractory Steel |
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WANG Xin, ZHONG Ping, LU Feng
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a. Laboratory of Number 5, b. Laboratory of Number 3, Beijing Institute of Aeronautical Material, Beijing 100095
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| Abstract: |
| Shot peening with different parameter was carried into execution on 12Cr martensitic refractory 1Cr12Ni3Mo2VN steel. The residual stress field and the fatigue property on hightemperature(HT) and roomtemperature(RT) were investigated. The results show that the residual stress profile is mainly affected by shot peening intensity and surface coverage. The RT fatigue property has a clear and main correlation with the intensity, and the RT fatigue life increases by 6 times after the shot peening with given parameters. Afterward, the surface coverage, which is independent of RT fatigue property, has a significant impact on HT fatigue property of 1Cr12Ni3Mo2VN steel. The HT fatigue life, which would decrease with the increase of surface coverage, increases by two times after the shot peening with 0.12A intensity and 100% coverage. However, the HT fatigue life, compared with the original samples, does not increase when the coverage is of 400%. |
| Key words: residual stress shot peening (SP) roomtemperature (RT) fatigue hightemperature (HT) fatigue surface coverage |
