Bi 入り低融点はんだの疲労寿命

概要

論文の詳細を見る
Strain controlled torsional fatigue tests were carried out on 37Sn-45Pb-18Bi solder having a comparatively low melting point under two strain cycling frequencies of 0.01Hz and 1.0Hz at 303K. The type of specimen was a thin-walled cylinder. The following results were obtained. (1) The fatigue lives of the solder were a little lower than those of the 60Sn-40Pb solder shown in the previous paper in general. (2) The fatigue life and the plastic shearing strain range, which was found by a partition of the inelastic shearing strain range, could be correlated by the Coffin-Manson law for each cycling frequency. (3) The present test values of the 37Sn-45Pb-18Bi solder fatigue life nearly coincided with the values calculated by the method for the fatigue life evaluation proposed in the previous paper. Consequently, the applicability of the method was verified.
山口大学の論文