an-investigation-on-hardness-and-tensile-shear-stress-of-friction-stir-welded-lap-joints-of-aa-2014-aluminium-alloys==>>an-investigation-on-hardness-and-tensile-shear-stress-of-friction-stir-welded-lap-joints-of-aa-2014-aluminium-alloyshttps://indexive.com/uploads/papers/pap_indexive15944989542147483647.pdf