Development of Miniature Creep Testing Method for Solders

Abstract

This paper describes a new miniature creep tester and the size effect of creep and creep rupture lives for solders. The new miniature creep tester was developed and creep rupture tests were carried out using five types of Sn-37Pb specimens with different diameters. Creep rupture times of miniature specimens were longer than those of bulk specimens. Creep rates of miniature specimens were slower than those of bulk specimens but the unique relationship held between the strain rate and rupture time in all types of specimens.