CLEAVAGE BEHAVIOR IN STRUCTURAL-STEELS

被引：4

作者：

IRWIN, GR

ZHANG, XJ

机构：

[1] Department of Mechanical Engineering, University of Maryland, College Park, MD

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 1995年 / 32卷 / 17-18期

关键词：

D O I：

10.1016/0020-7683(94)00276-3

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A consistent understanding of the initiation, spreading and arrest of cleavage in structural steels is possible only when the role of very high local-region strain rates is taken into account. Cleavage initiates only when the local strain rate is high enough to force a rigid (cleavage) response in the ferrite matrix. Run-arrest bursts of cleavage through regions comparable with the prior austenite grain size correspond to fracture appearance and assist understanding of variation of general cleavage crack speed. Measurements of toughness based upon cleavage arrest are of special value. These measurements can be obtained using relatively small specimens, show no influence of constraint and provide lower bounds for measurements of cleavage initiation toughness.

引用

页码：2447 / 2456

页数：10

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