| 超低碳奥氏体不锈钢在低周疲劳中的组织结构研究 |
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| 引用本文： | 刘宁,陈成澍.超低碳奥氏体不锈钢在低周疲劳中的组织结构研究[J].理化检验(物理分册),1995,31(6):18-20. |
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| 作者姓名： | 刘宁 陈成澍 |
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| 作者单位： | 成都无缝钢管厂，西南交通大学，北京航空材料研究所 610069 |
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| 基金项目： | 国家自然科学基金资助课题,编号58971068 |
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| 摘 要： | 研究了超低碳３１６Ｌ、３１６ＬＮ奥氏体不锈钢在常温下的低周疲劳行为及组织结构变化规律。结果表明，材料在循环变形过程中呈现不同程度的硬化、软化，应变幅的增加促进硬化，缩短低周疲劳寿命。透射电镜分析表明，奥氏体内的组织结构的演变过程与循环应力特性曲线的变化规律相呼应。
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| 关 键 词： | 奥氏体不锈钢 低周疲劳 组织结构 不锈钢 |
SUBSTRUCTURAL ALTERATION OF SUPER-LOW CARBON AUSTENITIC STAINLESS STEEL DURING LOW CYCLE FATIGUE |
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| Liu Ning,Chen Chengshu.SUBSTRUCTURAL ALTERATION OF SUPER-LOW CARBON AUSTENITIC STAINLESS STEEL DURING LOW CYCLE FATIGUE[J].Physical Testing and Chemical Analysis Part A:Physical Testing,1995,31(6):18-20. |
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| Authors: | Liu Ning Chen Chengshu |
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| Affiliation: | Liu Ning Chen Chengshu(Chendu Seamless Steel Tube Plant) (Southwest Jaotong University)Luo Zhiping(Beijing Institute of Aeronautical Materials) |
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| Abstract: | The behaviour and alteration of substructure of the super-low carbon 316L and 316LN austenitic stainless steels have been investigated during low cycle fatigue at room temperature. The results showed that the material appears various degrees of cyclic hardening and softening during cyclic deformation. The hardening was favoured and the fatigue life was reduced by increasing strain amplitude. The microstructures analysed under TEM showed that the dislocation in austenite was revealed to be associated with the change of the cyclic stress characteristic curve. |
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| Keywords: | Austenitic stainless steels Low cycle fatigue Substructure |
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