| 粉末高温合金的低周疲劳研究进展 |
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| 引用本文： | 林涛,何玉怀.粉末高温合金的低周疲劳研究进展[J].理化检验(物理分册),2011(11):697-701. |
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| 作者姓名： | 林涛 何玉怀 |
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| 作者单位： | 中国航空工业集团公司北京航空材料研究院失效中心,北京100095 |
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| 基金项目： | 航空科学基金资助项目（2009ZF21011） |
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| 摘 要： | 参考了前人对粉末高温合金低周疲劳的研究成果，回顾了基于缺陷的裂纹萌生和扩展的研究情况，介绍了针对粉末高温合金的喷丸强化机理和作用，总结了几种寿命模型，其中修正Mitchell模型最适合粉末高温合金的寿命预测；得出了需加强粉末高温合金低周疲劳寿命模型及喷丸强化研究的结论。
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| 关 键 词： | 粉末高温合金 低周疲劳 温度 寿命模型 缺陷 裂纹萌生与扩展 喷丸强化 |
Research Progress on Low Cycle Fatigue of Powder Metallurgy High Temperature Alloys |
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| LIN Tao,HE Yu-huai.Research Progress on Low Cycle Fatigue of Powder Metallurgy High Temperature Alloys[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(11):697-701. |
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| Authors: | LIN Tao HE Yu-huai |
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| Affiliation: | (Beijing Institute of Aeronautical Materials, Aviation Industry Corporation of China Beijing 100095, China) |
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| Abstract: | The research made by predecessors in the low cycle fatigue of powder metallurgy high temperature alloys was refered to, including the crack initiation and propagation based on the defects, the mechanism and effect of peening; several life model were summarized, the modified Mitchell method was the most suitable method for powder metallurgy high temperature alloys, the conclusion was made that the research about the low cycle fatigue life model and shot peening strengthening should be enhanced. |
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| Keywords: | powder metallurgy high temperature alloys low cycle fatigue temperature life model defect crack initiation and propagation shot peening strengthening |
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