Tensile properties of fiber laser welded joints of high strength low alloy and dual-phase steels at warm and low temperatures

被引：35

作者：

Parkes, D. ^{[1
]}

Westerbaan, D. ^{[2
]}

Nayak, S. S. ^{[2
]}

Zhou, Y. ^{[2
]}

Goodwin, F. ^{[3
]}

Bhole, S. ^{[1
]}

Chen, D. L. ^{[1
]}

机构：

[1] Ryerson Univ, Dept Mech & Ind Engn, Toronto, ON M5B 2K3, Canada

[2] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada

[3] Int Zinc Assoc, Durham, NC 27713 USA

来源：

MATERIALS & DESIGN | 2014年 / 56卷

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

Fiber laser welding; Dissimilar joint; High strength low alloy steel; Dual-phase steel; Tensile; Temperature; MECHANICAL-PROPERTIES; FATIGUE PROPERTIES; BEHAVIOR; MICROSTRUCTURE; FORMABILITY; DP980;

D O I：

10.1016/j.matdes.2013.10.087

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High strength low alloy (HSLA) and dual-phase DP980 (UTS >= 980 MPa) steels were joined using fiber laser welding in similar and dissimilar materials combinations. The welded joints were characterized with respect to microhardness and tensile properties at three different temperatures: -40 degrees C, 25 degrees C, and 180 degrees C. Tensile properties of the welded joints were compared to those of the base metal (BM) obtained under similar conditions. A good correlation was found between the welded joints and the BM in relation to the tensile properties obtained at the different temperatures. A general trend of increase in the yield strength (YS), the ultimate tensile strength (UTS) and energy absorption (EA) with decreasing temperature was observed; however, work hardening coefficient was not altered and insignificant scatter was observed in case of the elongation. However, in the DP980 steel, dynamic strain ageing was observed only in the BM. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：193 / 199

页数：7

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