Yb:YAG laser welding of TRIP780 steel with dual phase and mild steels for use in tailor welded blanks

被引：59

作者：

Sharma, Rajashekhar S. ^{[1
]}

Molian, Pal ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

来源：

MATERIALS & DESIGN | 2009年 / 30卷 / 10期

关键词：

Laser; Welding; High strength steels; Hardness; Tensile strength;

D O I：

10.1016/j.matdes.2009.04.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Advanced high strength steels (AHSS) are essential to meet the demands of safety and fuel efficiency in vehicles. In this paper, we present the results of laser welding of two AHSS steels,TRIP780 and DP980. A 2 kW Trumpf TRUDISK 6002 (R) Yb:YAG laser beam was utilized to join 1 mm thick TRIP780 with 1.5 mm thick DP980 and 1 mm thick mild steel. Optical metallography was used to characterize the weld profile and microstructures. Microhardness, tensile and fatigue tests were performed to evaluate the mechanical properties. Results indicate that the laser welds exhibit excellent strength and hardness with minimal defects which are attributed to the high beam quality, disk type of laser. In addition, there is a distinct effect of pre-straining of TRIP780 steels on the energy absorption. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：4146 / 4155

页数：10

共 17 条

[1] Fatigue behavior of tailor (laser)-welded blanks for automotive applications [J].

Anand, D ;

Chen, DL ;

Bhole, SD ;

Andreychuk, P ;

Boudreau, G .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 420 (1-2) :199-207

[2]

[Anonymous], 2006, STEEL

[3] The influence of arc transfer mode in hybrid laser-mig welding [J].

Campana, G. ;

Fortunato, A. ;

Ascari, A. ;

Tani, G. ;

Tomesani, L. .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2007, 191 (1-3) :111-113

[4]

Gallagher M., 2005, ADV LASER APPL C, P49

[5]

Gope N., 2005, SOC AUTOM ENG, V26, P333, DOI [10.4271/2005-26-333, DOI 10.4271/2005-26-333]

[6] CO2 laser welding characteristics of 800 MPa class TRIP steel [J].

Han, TK ;

Park, SS ;

Kim, KH ;

Kang, CY ;

Woo, IS ;

Lee, JB .

ISIJ INTERNATIONAL, 2005, 45 (01) :60-65

[7] Numerical simulations and experimental results of tensile test behavior of laser butt welded DP980 steels [J].

Panda, S. K. ;

Sreenivasan, N. ;

Kuntz, M. L. ;

Zhou, Y. .

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 2008, 130 (04) :0410031-0410039

[8]

RAMAKRISHNA K, 2008, SAE TECHNICAL PAPER, P1112

[9] Microstructures in laser welded high strength steels [J].

Rizzi, P. ;

Bellingeri, S. ;

Massimino, F. ;

Baldissin, D. ;

Battezzati, L. .

13TH INTERNATIONAL CONFERENCE ON RAPIDLY QUENCHED AND METASTABLE MATERIALS, 2009, 144

[10] Laser blank welding high-strength steels [J].

Shao, Haiping ;

Gould, Jerry ;

Albright, Charlie .

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2007, 38 (02) :321-331

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