Creep strengthening mechanisms in high Cr heat resistant steel

Mitsuhara, Masatoshi*; Yoshida, Yu*; Ikeda, Kenichi*; Nakashima, Hideharu*; Wakai, Takashi

The effects of V and Nb on creep strength of high Cr ferritic steel were investigated based on the observation results using STEM. As a result, it is clarified that Nb contributes to the improvement of creep strength by encumber the movement of the lath boundary by fine dispersed precipitation as MX particles and V contributes as film precipitation on the lath boundary.

Language	:	Japanese
Journal	:	Kyushu Daigaku Cho Koatsu Denkenshitsu Kenkyu Hokoku, 31
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Pages	:	p.78 - 79
Publication Year/Month	:	2007/00
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Cooperating Institute	:	九州大学

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Registration No. : AA20070306
JAEA Abstracts No. : 47001285
Paper Submission No. : 21921

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