Effect of prestrain on fracture toughness of HSLA steels

被引：58
|
作者：
Sivaprasad, S
Tarafder, S [1 ]
Ranganath, VR
Ray, KK
机构：
[1] Natl Met Lab, Fatigue & Fracture Grp, Jamshedpur 831007, Bihar, India
[2] Indian Inst Technol, Dept Met Engn, Kharagpur 721302, W Bengal, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 284卷 / 1-2期
关键词：
prestrain; fracture toughness; tensile flow;
D O I：
10.1016/S0921-5093(00)00739-5
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of tensile prestraining on the ductile fracture behaviour of two varieties of Cu-strengthened HSLA steels has been studied. It was observed that for both the HSLA steels the fracture toughness, J(C), remained invarient up to 2% prestrain, beyond which it decreased deleteriously. The nature of variation of fracture toughness with prestrain has been explained in terms of variation of the tensile flow properties of the steels with prestrain. A model correlating fracture toughness and the tensile flow properties has been proposed and it is demonstrated that the predictions of the model matched closely with the experimental observations. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：195 / 201
页数：7
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