Resistance Spot Weldability of Hot-Formed Ultra High Strength Steel Based on Virtual and Physical Experiment

Abstract:

In this study, virtual and physical experimental investigations were performed on the resistance spot weldability of hot-formed ultra high strength steels (UHSS). The sheets were joined by the resistance spot welding as lap or cross joint. The mechanical properties were assessed in terms of cross tension strength (CTS) and tensile shear strength (TSS). The micro structural profile and weld nugget diameter were also investigated. Both virtual and physical methods yielding results are in good agreement. The results are discussed in the light of earlier work published in the literature and contribute to a better understanding on the evaluation of resistance spot weldability.

• Periodical: Applied Mechanics and Materials (Volume 750)
• Pages: 244-250
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.750.244
• Online since: April 2015
• Authors: Zhi Shui Yu*, Wan Peng Dong, Chun Wei Ma, Jiang Wei Ren, Bi Hao Li, Yu Rong Ji
• Keywords: Cross Tension Test, Spot Welding, Tensile Shear Test

References

[1] N.T. Williams, J.D. Parker, Review of resistance spot welding of steel sheets: Part 1- Modeling and control of weld nugget formation, International Materials Reviewing. 49 (2004) 45-75.

DOI: 10.1179/095066004225010523

[2] V. Rajinikanth, K. Mukherjee, S. Ghosh Chowdhury, et al, Mechanical property and microstructure of resistance spot welded twinning induced plasticity-dual phase steels joint, Science and Technology of Welding and Joining. 18 (2013) 485-491.

DOI: 10.1179/1362171813y.0000000127

[3] M. Balasubramamian, V. Balasubramamian, Effect of process parameters on SPRC35 spot welded automotive panels, ACTA Metallurgica Sinica., 23 (2010) 185-190.

[4] Chao Yuh J., Ultimate Strength and failure mechanism of resistance spot weld subjected to tensile, shear, or combined tensile/shear loads, Journal of Engineering Materials and Technology. 125 (2003) 125-132.

DOI: 10.1115/1.1555648

[5] O. Hatsuhiko, M. Gen, S. Tatsuya, et al, Resistance spot weldability of high strength steel (HSS) sheets for automobiles, Nippon Steel Technical Report. 95 (007) 39-45.

[6] D.C. Saha, Y. Cho, Y.D. Park, Metallographic and fracture characteristics of resistance spot welded TWIP steels, Science and Technology of Welding and Joining. 18 (2013) 711-719.

DOI: 10.1179/1362171813y.0000000151

[7] M. Pouranvari, S.P.H. Marashi, Critical review of automotive steels spot welding: process, structure and properties, Science and Technology of Welding and Joining. 18 (2013) 361-403.

DOI: 10.1179/1362171813y.0000000120

[8] BS EN ISO 14272-2001 Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection welds. (2001).

DOI: 10.3403/02522974

[9] BS EN ISO 14273-2001 Specimen dimensions and procedure for shear testing resistance spot, seam and embossed projection welds. (2001).

DOI: 10.3403/02521576