Creep rupture strength of heat affected zone for 9Cr ferritic heat resisting steels

被引：26

作者：

Otoguro, Y ^{[1
]}

Matsubara, M ^{[1
]}

Itoh, I ^{[1
]}

Nakazawa, T ^{[1
]}

机构：

[1] Gunma Univ, Fac Engn, Dept Mech Engn, Gunma 3768515, Japan

来源：

NUCLEAR ENGINEERING AND DESIGN | 2000年 / 196卷 / 01期

关键词：

D O I：

10.1016/S0029-5493(99)00232-0

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This paper describes creep rupture characteristics of weld heat affected zone, HAZ for 9Cr ferritic steels that are promising materials for nuclear energy uses. In general, creep rupture strength in the heat affected zone of peak temperature between 900 and 1000 degrees C is lower than that in the base metal for ferritic steels. Grain refinement and coagulation of carbides for 9Cr-1Mo steels cause decrease in creep rupture strength of the HAZ. The hardness in the simulated HAZ heated to around 1000 degrees C decreases during creep. This seems to be related to weakening of the HAZ at 1000 degrees C. However, substitution of W for Mo is very effective in enhancement of creep rupture strength of the HAZ due to higher stability of carbides and increase in quantity of precipitated carbides during creep rupture test. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：51 / 61

页数：11

共 8 条

[1] CREEP RUPTURE STRENGTH AND MICROSTRUCTURE OF LOW C-10Cr-2Mo HEAT-RESISTING STEELS WITH V AND Nb. [J].

Fujita, T. ;

Asakura, K. ;

Sawada, T. ;

Takamatsu, T. ;

Otoguro, Y. .

Metallurgical transactions. A, Physical metallurgy and materials science, 1981, 12 A (06) :1071-1079

[2]

GUNZ G, 1978, P INT C FERR STEELS, P164

[3]

HASHIMOTO K, 1983, P TOP C FERR ALL US

[4]

KING RT, 1978, P INT C FERR STEELS, P74

[5]

Otoguro Y, 1994, J HIGH PRESS I JPN, V32-1, P4

[6]

OTOGURO Y, 1989, ISIJ M, V2, P840

[7]

SCOTT JL, 1980, P 4 TOP M TECHN CONT, P1661

[8]

Yukitoshi T., 1976, Transactions of the ASME. Series J, Journal of Pressure Vessel Technology, V98, P173, DOI 10.1115/1.3454356

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