Factors affecting mechanical properties of resistance spot welds

2010 ◽  
Vol 26 (9) ◽  
pp. 1137-1144 ◽  
Author(s):  
M. Pouranvari ◽  
S. P. H. Marashi
Keyword(s):  
Mechanical Properties ◽  
Spot Welds ◽  
Factors Affecting ◽  
Resistance Spot ◽  
Resistance Spot Welds

scholarly journals Effect of weld nugget size on failure mode and mechanical properties of microscale resistance spot welds on Ti–1Al–1Mn ultrathin foils

2018 ◽  
Vol 10 (7) ◽  
pp. 168781401878528 ◽  
Author(s):  
Feng Chen ◽  
Shiding Sun ◽  
Zhenwu Ma ◽  
GQ Tong ◽  
Xiang Huang
Keyword(s):  
Mechanical Properties ◽  
Failure Mode ◽  
Failure Modes ◽  
Mechanical Performance ◽  
Weld Nugget ◽  
Interfacial Failure ◽  
Spot Welds ◽  
Resistance Spot ◽  
Resistance Spot Welds ◽  
Pullout Failure

We use tensile–shear tests to investigate the failure modes of Ti–1Al–1Mn microscale resistance spot welds and to determine how the failure mode affects the microstructure, microhardness profile, and mechanical performance. Two different failure modes were revealed: interfacial failure mode and pullout failure mode. The welds that fail by pullout failure mode have much better mechanical properties than those that fail by interfacial failure mode. The results show that weld nugget size is also a principal factor that determines the failure mode of microscale resistance spot welds. A minimum weld nugget size exists above which all specimens fail by pullout failure mode. However, the critical weld nugget sizes calculated using the existing recommendations are not consistent with the present experimental results. We propose instead a modified model based on distortion energy theory to ensure pullout failure. Calculating the critical weld nugget size using this model provides results that are consistent with the experimental data to high accuracy.

scholarly journals HAZ Microstructures and Local Mechanical Properties of High Strength Steels Resistance Spot Welds

2011 ◽  
Vol 51 (1) ◽  
pp. 99-107 ◽  
Author(s):  
Sylvain Dancette ◽  
Veronique Massardier-Jourdan ◽  
Damien Fabrègue ◽  
Jacques Merlin ◽  
Thomas Dupuy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Strength Steels ◽  
High Strength ◽  
Spot Welds ◽  
Resistance Spot ◽  
Resistance Spot Welds

Influence of polarity on mechanical properties of dissimilar resistance spot welds of DP 600/AISI 304 steels

2016 ◽  
Vol 21 (8) ◽  
pp. 607-613 ◽  
Author(s):  
Alejandro Espinel Hernández ◽  
Angel Sánchez Roca ◽  
Hipólito Carvajal Fals ◽  
Valtair Antonio Ferraresi ◽  
Louriel Oliveira Vilarinho
Keyword(s):  
Mechanical Properties ◽  
Spot Welds ◽  
Aisi 304 ◽  
Resistance Spot ◽  
Resistance Spot Welds

Effect of boron content and welding current on the mechanical properties of electrical resistance spot welds in complex-phase steels

2014 ◽  
Vol 54 ◽  
pp. 598-609 ◽  
Author(s):  
Jong Pan Kong ◽  
Tae Kyo Han ◽  
Kwang Geun Chin ◽  
Bong Gyu Park ◽  
Chung Yun Kang
Keyword(s):  
Mechanical Properties ◽  
Electrical Resistance ◽  
Boron Content ◽  
Welding Current ◽  
Spot Welds ◽  
Complex Phase ◽  
Resistance Spot ◽  
Resistance Spot Welds

Mechanical properties of dissimilar resistance spot welds of aluminum to magnesium with Sn-coated steel interlayer

2016 ◽  
Vol 91 ◽  
pp. 331-339 ◽  
Author(s):  
M. Sun ◽  
S.T. Niknejad ◽  
H. Gao ◽  
L. Wu ◽  
Y. Zhou
Keyword(s):  
Mechanical Properties ◽  
Coated Steel ◽  
Spot Welds ◽  
Resistance Spot ◽  
Resistance Spot Welds

The Effects of Post-Weld Cold Working Processes on the Fatigue Strength of Low Carbon Steel Resistance Spot Welds

2004 ◽  
Author(s):  
R. Spitsen ◽  
D. Kim ◽  
B. Flinn ◽  
M. Ramulu ◽  
E. T. Easterbrook
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Cold Working ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Spot Welds ◽  
Working Process ◽  
Resistance Spot ◽  
Resistance Spot Welds ◽  
Spot Welded

The investigation on the use of a post-weld cold working process to improve fatigue strength of low carbon steel resistance spot welds is presented. The cold working process generates uniform and consistent large zones of compressive residual stresses in resistance spot-welded low carbon steel structures using a specially designed indentation device. The effect of the indentation process parameters on the mechanical properties of the resistance spot-weld was investigated. Comparisons of the mechanical properties and qualitative results between the as-resistance spot-welded specimens and the post-weld cold worked resistance spot-welded specimens have been made in this investigation. Fatigue testing was also conducted to evaluate the effect of post-weld cold working process on the fatigue characteristics of resistance spot welds. Preliminary results showed that a significant improvement in the fatigue endurance limit has been achieved through the post-weld cold working process.

Welding behaviour, microstructure and mechanical properties of dissimilar resistance spot welds between galvannealed HSLA350 and DP600 steels

2009 ◽  
Vol 14 (7) ◽  
pp. 616-625 ◽  
Author(s):  
M. S. Khan ◽  
S. D. Bhole ◽  
D. L. Chen ◽  
E. Biro ◽  
G. Boudreau ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Spot Welds ◽  
Resistance Spot ◽  
Microstructure And Mechanical Properties ◽  
Resistance Spot Welds
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