Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
Mg alloy (i.e. the specific gravity is small and the mechanical characteristics are excellent) is necessary material for the weight reduction of structure. However, the use range as the structural member of that alloy narrows, because that is not suitable for the jointing by the welding. Therefore, the friction stirring welding (FSW) which is solid phase jointing began to be paid attention. However, the influences by using that technique for the alloy are not grasped sufficiently. In this study, the tensile and the fatigue test for the specimens (i.e. Mg alloy AZ 31 and that alloy jointed together by FWS) were carried out, and the influences of FSW to mechanical properties were evaluated by the characteristics of AE signals detected in those test. From the results obtained under this experimental conditions, it was proven that there was large difference to the generation behaviors of the AE events which were detected by each fracture type.
