Resistance and friction stir spot welding of DP600: A comparative study Journal Articles

abstract

• Efforts to reduce vehicle weight and improve crash performance have resulted in increased application of advanced high strength steels (AHSS) and a recent focus on the weldability of these alloys. Resistance spot welding (RSW) is the primary sheet metal welding process in the manufacture of automotive assemblies. Friction stir spot welding (FSSW) was invented as a novel method to spot welding sheet metal and has proven to be a potential candidate for spot welding AHSS. A comparative study of RSW and FSSW on spot welding AHSS has been completed. The objective of this work is to compare the microstructure and mechanical properties of Zn coated DP600 AHSS (1·2 mm thick) spot welds conducted using both processes. This was accomplished by examining the metallurgical cross-sections and local hardnesses of various spot weld regions. High speed data acquisition was also used to monitor process parameters and attain energy outputs for each process. Results show a correlation found among microstructure, failure loads, energy requirements and bonded area for both spot welding processes.

authors

• Khan, MI
• Kuntz, ML
• Su, P
• Gerlich, A
• North, T
• Zhou, Norman

status

• published 

publication date

• February 2007

has subject area

• 09 Engineering (FoR)
• Materials (Science Metrix)

published in

• Science and Technology of Welding and Joining  Journal

keywords

• DP600
• Materials Science
• Materials Science, Multidisciplinary
• Metallurgy & Metallurgical Engineering
• STEEL
• Science & Technology
• Technology
• advance high strength steel
• friction stir spot welding
• mechanical properties
• microstructure
• resistance spot welding

Digital Object Identifier (DOI)

• 10.1179/174329307x159801

start page

• 175

end page

• 182

volume

• 12

issue

• 2