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The authors welded magnesium alloy AZ31B sheets using the technique of resistance spot welding with cover plates, and investigated the effects of welding parameters on the tensile shear strength of joints and shape characteristic of nugget. The joints with high tensile shear strength were obtained under relatively low welding current. The equiaxed grains with the many intragranularly precipitated particles Mg17Al12 in the nugget were observed.
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Qiu et al. (2009) studied this question.
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