LOW-TEMPERATURE FRACTURE-BEHAVIOR OF 12-PERCENT-CR-15-PERCENT-MN AUSTENITIC STEELS

被引：4

作者：

SHIMOIDE, Y ^{[1
]}

MIYAHARA, K ^{[1
]}

BAE, DS ^{[1
]}

KATO, H ^{[1
]}

HOSOI, Y ^{[1
]}

机构：

[1] NAGOYA UNIV,DEPT MAT SCI & ENGN,CHIKUSA KU,NAGOYA,AICHI 464,JAPAN

来源：

MATERIALS TRANSACTIONS JIM | 1993年 / 34卷 / 11期

关键词：

REDUCED RADIOACTIVATION MATERIALS; LOW TEMPERATURE TOUGHNESS; HIGH MANGANESE-CHROMIUM STEELS; CLEAVAGE FRACTURE; EPSILON MARTENSITE; TYPE M(23)C(6) CARBIDE; VANADIUM NITRIDE;

D O I：

10.2320/matertrans1989.34.1006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The primary objective of the present study is to investigate the low temperature toughness of high Mn-Cr austenitic steels which are being developed as one candidate alloy for the structural material of fusion reactor from the point of view of reduced radio-activation. In the present work, the effects of V, Ti and P on the low temperature toughness of the alloys with the basic composition of 12%Cr-15%Mn-(0.1-0.2%)C-(0.1-0.2%)N are investigated. Coarse precipitates of M(23)C(6) on the grain boundaries caused intergranular fracture and tiny precipitates of VN within the grains enhanced cleavage fracture in aging treated alloys. The addition of Ti was beneficial for improving toughness due to the restraining of the tiny VN precipitation. The addition of P, however, deteriorated the low temperature toughness of the alloys. The toughness values of the 12%Cr-15%Mn materials were compared with those of JFMS (a modified 9Cr-2Mo ferritic stainless steel) and JPCA (modified 316 austenitic stainless steel).

引用

页码：1006 / 1011

页数：6

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