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Acta Metall Sin  1992, Vol. 28 Issue (12): 15-17    DOI:
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IN SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN 3Cr2W8V STEEL
LIU Jianhong; HE Shiyu; YAO Mei (Harbin Institute of Technology)
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LIU Jianhong; HE Shiyu; YAO Mei (Harbin Institute of Technology). IN SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN 3Cr2W8V STEEL. Acta Metall Sin, 1992, 28(12): 15-17.

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Abstract  The growing process of thermal fatigue cracking in 3Cr2W8V steel was observed under desk SEM fitted with self-made minisized device for thermal fatigue test. Before growing of thermal fatigue crack, the main crack tip reveals to blunt firstly, and some holes and uncontinuous microcracks occur in front of it. The growth is developed by bridging of main crack together with holes and microcracks.
Key words:  3Cr2W8V steel      thermal fatigue      crack growth      in situ observation     

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https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1992/V28/I12/15

1 刘剑虹,冯晓曾,张德福,安徽工学院学报,1988;2,45
2 何晋瑞主编,金属高温疲劳,科学出版社,1988;262/
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