Study on Intermediate Frequency Spot Welding Process of Hot Stamping High Strength Steel

Abstract:

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The joints of RSW for HSHSS were prepared with IF spot weld equipment. The weld nugget, fracture mode, microstructure and micro-hardness of the joints were investigated. The weld nugget increases and the fracture mode changes from interfacial fracture to nugget plug fracture with the increasing welding current. There are three distinct zones in the weld joint: weld nugget, heat affected zone (HAZ) and base metal. The microstructure of HAZ includes tempered zone (HAZ-1), incomplete quenching zone (HAZ-2) and complete quenching zone (HAZ-3). The micro-hardness of weld nugget and HAZ-3 is same with the base metal. The micro-hardness of HAZ-1 and HAZ-2 is smaller than that of base metal.

Info:

Periodical:

Edited by:

Zhijiu Ai, Xiaodong Zhang, Yun-Hae Kim and Prasad Yarlagadda

Pages:

375-378

DOI:

10.4028/www.scientific.net/AMR.339.375

Citation:

Y. Yu et al., "Study on Intermediate Frequency Spot Welding Process of Hot Stamping High Strength Steel", Advanced Materials Research, Vol. 339, pp. 375-378, 2011

Online since:

September 2011

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$35.00

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