RZ Xu, DR Ni, Q Yang, CZ Liu, ZY Ma - Journal of Materials Science & …, 2016 - Elsevier
With the addition of a thin Zn interlayer, 2.4 mm thick Mg‒3Al‒1Zn alloy sheets were friction
stir spot welded (FSSW) using a pinless tool with flat, convex and concave shoulder shapes …