Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 18, 2020 - November 20, 2020
The purpose of this study is to clarify the effect of additional elements on the superplasticity in the Sn-Bi alloys. Tensile tests of Sn-Bi-X alloys were performed at various temperature (298, 313, 333, and 353 K) and strain rates (from 5.25×10-5 to 5.25×10-2 s-1). It was found the superplastic behavior at high temperature (more than 333 K) and low strain rates (under 5.25×10-4 s-1). Strain rate sensitivity “m” for Sn-Bi-X alloys were less than 0.3. From the results of the microstructure observation after superplasticity, it was found that the additional elements act as the formation of intermetallic compounds or dissolves in the primary crystal Sn grains had an effect on the superplastic deformation of Sn-Bi-X alloy.
