THE MIXED-MODE I-II FRACTURE-BEHAVIOR OF LIGHTLY TEMPERED HY130 STEEL AT ROOM-TEMPERATURE

被引：76

作者：

MACCAGNO, TM ^{[1
]}

KNOTT, JF ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,SCH MET & MAT,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

ENGINEERING FRACTURE MECHANICS | 1992年 / 41卷 / 06期

关键词：

D O I：

10.1016/0013-7944(92)90233-5

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The mixed mode I/II fracture behaviour at room temperature of HY130 steel tempered at 350-degrees-C has been investigated using edge-cracked bend bar specimens loaded in anti-symmetric and symmetric four point bend configurations. In all cases fracture occurred by a localized shear decohesion mechanism that could not be characterized by the stress intensity factors, K(I) and K(II), but for which the crack tip displacement, delta(I) and delta(II), appear to provide a first level of characterization. The results suggest that fracture is described by a maximum shear criterion, and this is consistent with the present understanding of fibrous fracture micro-mechanisms in the material.

引用

页码：805 / &

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