EFFECT OF BOUNDARY CARBIDE ON CREEP CRACK GROWTH IN Fe-Cr15-Ni25 ALLOY

Acta Metall Sin

1991, Vol. 27

Issue (4): 54-58 DOI:

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EFFECT OF BOUNDARY CARBIDE ON CREEP CRACK GROWTH IN Fe-Cr15-Ni25 ALLOY

WANG Fugang;ZHU Suming;ZHU Shijie;REN Xiaoming;TAN Yi;ZHANG Junshan Dalian University of Technology

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WANG Fugang;ZHU Suming;ZHU Shijie;REN Xiaoming;TAN Yi;ZHANG Junshan Dalian University of Technology. EFFECT OF BOUNDARY CARBIDE ON CREEP CRACK GROWTH IN Fe-Cr15-Ni25 ALLOY. Acta Metall Sin, 1991, 27(4): 54-58.

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Abstract The cavities nucleate at the triple junctions of grain boundaries insingle phase Fe-Cr15-Ni25 alloy, but at carbide in such alloy that the carbide pre-cipitated along grain boundary. The boundary carbide may retard the growth andinterlinkage of cavities, so as to improve remarkably the resistance to creep crackgrowth.

Key words: creep crack growth grain boundary carbide cavity Fe-Cr15-Ni25 alloy

Received: 18 April 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I4/54

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