LIU Jianhong HE Shiyu YAO Mei Harbin Institute of Technology
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Harbin
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China lecturer
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Depatment of Metallic Materials
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Harbin Institute of Technology
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Harbin 150006
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China
金属学报(英文版)
The growing process of thermal fatigue cracking,in steel 3Cr2WSV was observed under desk SEM fitted with sell-made minisized device for thermal faligue test.Before the growing of thermal fatigue crack,the main crack tip reveals to blunt firstly,and some holes and uncontinuous microcraeks occur in front of it.The growth is developed by bridging of main crack together with holes and microcracks.
关键词:
steel 3Cr2W8V
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