IN-SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN STEEL 3Cr2W8V

Acta Metallurgica Sinica (English Letters) ›› 1993, Vol. 6 ›› Issue (3): 191-192.

• Research paper • Previous Articles Next Articles

IN-SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN STEEL 3Cr2W8V

LIU Jianhong HE Shiyu YAO Mei Harbin Institute of Technology,Harbin,China lecturer,Depatment of Metallic Materials,Harbin Institute of Technology,Harbin 150006,China

Received:1993-06-25 Revised:1993-06-25 Online:1993-06-25 Published:2009-10-10

Abstract

Abstract: 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.

Key words: steel 3Cr2W8V, thermal fatigue, crack growth, in-situ observation

LIU Jianhong HE Shiyu YAO Mei Harbin Institute of Technology,Harbin,China lecturer,Depatment of Metallic Materials,Harbin Institute of Technology,Harbin 150006,China. IN-SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN STEEL 3Cr2W8V[J]. Acta Metallurgica Sinica (English Letters), 1993, 6(3): 191-192.

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IN-SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN STEEL 3Cr2W8V

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