| 一种高强度钢的低周疲劳特性及其微观机理的研究 |
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| 引用本文： | 曾庆祥,何国求.一种高强度钢的低周疲劳特性及其微观机理的研究[J].西南交通大学学报,1999,34(2):190-195. |
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| 作者姓名： | 曾庆祥 何国求 |
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| 作者单位： | [1]西南交通大学机械工程学院 [2]西南交通大学 |
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| 摘 要： | 研究了６０Ｓｉ２ＣｒＶＡ高强度钢在低周疲劳条件下循环变形的宏观特性，结合材料在低周疲劳过程中位错组态的电镜观察，分该高强度钢中的铁素体和回火马氏体内的位错组态的微观行为。
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| 关 键 词： | 高强度钢 疲劳 微观机理 低周疲劳 循环软化 钢 |
A Study on the Low Cycle Fatigue Characteristics and Micro mechanisms of a High Strength Steel |
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| Zeng Qingxiang.A Study on the Low Cycle Fatigue Characteristics and Micro mechanisms of a High Strength Steel[J].Journal of Southwest Jiaotong University,1999,34(2):190-195. |
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| Authors: | Zeng Qingxiang |
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| Abstract: | The macro characteristics of cyclic deformation of the high strength steel 60Si2CrVA under the condition of low cycle fatigue (LCF) are studied. Based on the TEM observations on the dislocation arrangement of the experimental material during the fatigue process, the micro behaviors of the dislocations of ferrite and tempered martensite of the high strength steel are analyzed, and the micro mechanisms of cyclic softening and hardening are discussed. It is proved to some extent that the cyclic softening and hardening coexist in LCF. |
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| Keywords: | high strength steels fatigue process micro mechanism low cycle fatigue cyclic softening cyclic hardening |
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