변형률속도를 고려한 스테인리스강의 물성치 연구

Abstract

This paper is concerned with the dynamic material properties of stainless steels. The effects of strain rate on dynamic flow stress, work hardening characteristics, strain rate sensitivity and elongation to the failure are evaluated under wide range of strain rate. Strain rate effects on the material properties are also investigated. Tensile tests are conducted with 5 kinds of stainless steels; SA-B193 B7, SA-182 F304, SA-350 LF3, SA-240 316L, SUS304. Tensile tests have been performed with the variation of strain rate from 0.001/sec to 100/sec. Quasi-static tensile tests are conducted with INSTRON tensile test machine. Tensile tests at the strain rate of 0.1/sec~100/esc are performed with HSMTM(high speed material testing machine).