Influence of Carbon Equivalent Value on theWeld Bead Bending Properties of High-Strength Low-Alloy Steel Plates

被引：16

作者：

Kim, Ki Hyuk ^{[1
]}

Moon, In Jun ^{[1
]}

Kim, Ki Won ^{[1
]}

Kang, Ki Bong ^{[1
]}

Park, Byung Gyu ^{[1
]}

Lee, Kwang Seok ^{[2
]}

机构：

[1] Dongkuk Steel Mill Co Ltd, R&D Ctr, Pohang 790729, South Korea

[2] Korea Inst Mat Sci, Implementat Res Div, Mat Deformat Dept, 797 Changwondaero, Chang Won 642831, Gyeongnam, South Korea

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2017年 / 33卷 / 04期

关键词：

Mechanical characterization; Steel; Welding; Fracture; Crack arrestability against bending; TOWERS;

D O I：

10.1016/j.jmst.2016.07.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The contribution of chemical compositions in terms of carbon equivalent value (CEV) on impending crack propagation during weld bead bend tests (WBBTs) was studied with five different high-strength lowalloy steel plates that underwent different rolling processes. The test showed that cracks developed at the weld joint, easily passed through the coarse-grain heat-affected zone (CGHAZ), and finally were arrested within the heat-affected zone (HAZ). An apparent decrease in the average crack length, which consequently indicated improvement in crack arrestability, was found with decreasing CEV. In addition, the relatively fine microstructure in the HAZ of low-CEV steel plates helped in preventing the crack from further propagation. Special emphasis was placed on the empirical expectation of critical CEV above which WBBT might fail. Copyright (C) 2017, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.

引用

页码：321 / 329

页数：9

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