Collaborative Simulation of Nugget Growth and Process Signals for Resistance Spot Welding

Xia, Yu-Jun; Lv, Tianle; Ghassemi-Armaki, Hassan; Li, Yong Bing; Carlson, Blair E.

doi:10.1007/s40194-023-01489-4

Cited by 7 publications

(1 citation statement)

References 24 publications

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“…It has been reported that higher electrode force facilitates the softening of irregular protrusions on the electrode and workpiece surface at the early stage of welding, which increases contact areas and decreases dynamic resistance. 29,30 Hence, it is considered that low electrode force of less than 3.650 kg causes grain growth in the HAZ due to the high heat inputs, whereas high electrode force of more than 5.575 kg can prevent grain growth in the HAZ by reducing heat inputs. The joint breaking force and setdown declined at the electrode force of 8.000 kg because of insufficient heat input, and no successful joints were fabricated at an excessive electrode force of 9.425 kg.…”

Section: The Effects Of the Electrode Force On The Joint Breaking Forcementioning

confidence: 99%

Micro-resistance welding of NiTi shape memory alloy wire and MP35N wire

Oyamada,

Zhang,

Peng

et al. 2024

Science and Technology of Welding and Joining

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The micro-resistance welding between NiTi shape memory alloy and Co-35Ni-20Cr-10Mo alloy (MP35N) wires was investigated to gage the feasibility of their future applications. Welding current and electrode force significantly affected the joint breaking force. The highest joint breaking force (0.99 kgf) at the optimized welding parameter (0.51 kA, 7.500 kg) was accomplished by maximizing the solid-state bonded area and minimizing the heat-affected zone (HAZ). This highest joint breaking force was higher than that of the micro-resistance welded NiTi wire joint reported in previous studies. Furthermore, the cyclic tensile test revealed that the accumulated residual strain of NiTi wire was reduced after welding. This could be attributed to the reduction in the dislocation density through grain growth in the HAZ of NiTi wire during the welding process.

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Section: The Effects Of the Electrode Force On The Joint Breaking Forcementioning

confidence: 99%