EFFECTS OF HYDROGEN ON THE MIXED-MODE I/III TOUGHNESS OF A HIGH-PURITY ROTOR STEEL

被引：61

作者：

GORDON, JA

HIRTH, JP

KUMAR, AM

MOODY, NE

机构：

[1] WASHINGTON STATE UNIV, DEPT MECH & MAT ENGN, PULLMAN, WA 99164 USA

[2] SANDIA NATL LABS, TECH STAFF, LIVERMORE, CA 94550 USA

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1992年 / 23卷 / 03期

关键词：

D O I：

10.1007/BF02675576

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

J integral tests, both pure mode I and mixed mode I/III in character, were performed on a high-purity Ni-Cr-Mo-V rotor steel. The steel was tested in the uncharged condition and after gaseous charging with hydrogen to a level of 2 at. ppm. Hydrogen degraded the J integral toughness incrementally by approximately 30 pct with the degree of degradation increasing mode III loading component. The results are discussed in terms of a model in which, augmenting the effect of the mode III loading, hydrogen further increases the tendency for plastic instability in the form of shear bands.

引用

页码：1013 / 1020

页数：8

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