Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 214, Issue 11, Pages 2723-2729Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2014.06.009
Keywords
Dual phase steel; Resistance spot welding; Numerical simulation; Welding current effect
Funding
- National Natural Science Foundation of China [11072083]
- Graduates Innovation Fund of Huazhong University of Science Technology [HF-11-14-2013]
- Fundamental Research Funds for the Central Universities, HUST [CXY13Q047]
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Experiments were made for welding current variation between 6 kA and 12 kA. Microstructure and mechanical performance under tensile-shear tests were recorded and compared. Welding current effect on micro-properties was very slight while nugget size was highly dependent on welding current. Expulsion phenomenon existed at 12 kA welding current and the unsatisfactory partial interfacial failure was detected. Nugget formation and temperature distribution were analysed numerically. Comparisons with experimental results showed that the nugget size deviation was within 10% and the nugget shape was well predicted. (C) 2014 Elsevier B.V. All rights reserved.
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