Abnormal fracture appearance in drop-weight tear test specimens of pipeline steel

被引：18

作者：

Yang, Zheng ^{[1
]}

Kim, Chang-Boo ^{[1
]}

Feng, Yaorong ^{[2
]}

Cho, Chongdu ^{[1
]}

机构：

[1] Inha Univ, Dept Mech Engn, Inchon 402751, South Korea

[2] CNPC, Tubular Goods Res Ctr, Xian 710065, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 483-84卷

关键词：

pipeline steel; DWTT; abnormal fracture appearance;

D O I：

10.1016/j.msea.2006.09.182

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The abnormal fracture appearance (AFA), which is frequently observed on the drop-weight tear test (DWTT) fracture surface of high performance pipeline steels, makes the DWTT technique difficult to utilize. Different DWTT specimens are tested at different temperatures. The cleavage regions of different AFA result from different phenomena during specimen fracture. All of the specimens exhibiting AFA should not be discarded as invalid specimens. Some new approaches are proposed to prevent or reduce the occurrence of AFA. The evaluation of DWTT specimens exhibiting AFA is re-examined considering the coupled effects of deformation, material behavior and fracture on the fracture appearance of high performance pipeline steel. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：239 / 241

页数：3

共 5 条

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MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 368 (1-2) :18-27

[3]

LEIS BN, 1998, P 1998 M ONSH PIP TE

[4]

NOZAKI N, 1981, SUMITOMO SEARCH, V26, P76

[5]

Seifert K., 1984, Materials Testing, V26, P277

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