Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9398
Title: Formability and weld zone analysis of tailor-welded blanks for various thickness ratios
Authors: Chan, LC 
Chan, SM
Cheng, CH
Lee, TC
Keywords: Formability
SPCC
Tailor-welded blanks
Thickness ratio
Issue Date: 2005
Publisher: ASME-Amer Soc Mechanical Eng
Source: Journal of engineering materials and technology, transactions of the asme, 2005, v. 127, no. 2, p. 179-185 How to cite?
Journal: Journal of Engineering Materials and Technology, Transactions of the ASME 
Abstract: Cold-rolled steel sheets of thicknesses ranging from 0.5 to 1.0 mm were used to produce tailor-welded blanks (TWBs) with various thickness ratios. In this study, the formability of the TWBs, as well as the mechanical characteristics of the weld zones, were analyzed experimentally under the effects of various thickness ratios of TWBs. The formability of the TWBs was evaluated in terms of three measures - failure mode, forming limit diagram, and minimum major strain, whereas the mechanical characteristics of the weld zones were investigated by tensile testing, metallographic study, and microhardness measurement. In particular, circular TWBs with different radii and cutoff widths were designed where all the welds were located in the center of the blanks and perpendicular to the principal strain direction. Nd:YAG laser butt-welding was used to weld the TWB specimens of different thickness ratios. The experimental findings in this study showed that the higher the thickness ratio of the TWBs, the lower the forming limit curve level, and the lower formability. The minimum major strain was clearly inversely proportional to the thickness ratio of the TWBs. On the other hand, the results of uniaxial tensile tests clearly illustrated that there was no significant difference between the tensile strengths of the TWBs and those of the base metals. The metallographic study demonstrated a difference of grain size in the materials at base metal, heat-affected zones, and fusion zone. The microhardness measurement indicated that the hardness in the fusion zone increased by about 60% of the base metal.
URI: http://hdl.handle.net/10397/9398
ISSN: 0094-4289
DOI: 10.1115/1.1857936
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

33
Last Week
0
Last month
0
Citations as of May 19, 2017

WEB OF SCIENCETM
Citations

29
Last Week
0
Last month
0
Citations as of May 20, 2017

Page view(s)

30
Last Week
0
Last month
Checked on May 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.