| 两种质量状态下42CrMoA材料疲劳特性研究 |
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| 引用本文： | 谭兵,蔡力勋,罗海丰.两种质量状态下42CrMoA材料疲劳特性研究[J].四川建筑科学研究,1999(3):56-60. |
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| 作者姓名： | 谭兵 蔡力勋 罗海丰 |
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| 作者单位： | [1]成都市工程咨询公司 [2]西南交通大学力学所 |
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| 摘 要： | 本文对两种４２ＣｒＭｏＡ钢低倍点状偏低材料进行了常温等幅低周疲劳与准高周疲劳试验研究，研究表明，两种点状偏状状态的４２ＣｒＭｏＡ钢均具有循环软化特性；２．５级点状偏析提高了材料的单调与循环应力响应，当△ε／２〈１．１７％时，２．５级点偏析给４２ＣｒＭｏＡ材料带来了疲劳安全性，这种安全性随应变幅值的减小而趋增大，在吉疲劳范围，安全储备高达２－３倍，本文基于应力型和应变型疲劳曲线预测能力分析，提出了两
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| 关 键 词： | 低周疲劳 疲劳曲线 42CrMoA钢 |
EFFECT OF PUNCTATE CONGLOMERATION ON UNIAXIAL FATIGUE BEHAVIOR OF 42CRMOA |
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| Tan Bing.EFFECT OF PUNCTATE CONGLOMERATION ON UNIAXIAL FATIGUE BEHAVIOR OF 42CRMOA[J].Building Science Research of Sichuan,1999(3):56-60. |
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| Authors: | Tan Bing |
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| Abstract: | In order to investigate the effect of punctate conglomeration in 42CrMoA axle steel on its uniaxial cyclic behavior,a series of fatigue tests were carried out. This paper prasentS two fatigue damage medels for 42CrMoA steel with different conglomeration grades. The results show that the material with 2- 5-grade of punctate conglomeration has better anti-fatigue property than that with O-grade of conglomeration specially in high cycle fatigue range. |
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| Keywords: | fatigue fatigue damage model |
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