계장화 압입시험에 의한 용접부의 물성 평가

Evaluation of mechanical properties of welding materials by an instrumented indentation test

  • 구병춘 (한국철도기술연구원 차량기계연구본부) ;
  • 권동일 (서울대학교 재료공학부) ;
  • 최열 ((주)프론틱스)
  • 발행 : 2003.11.01

초록

When material properties depend much on positions in a material or it is difficult to make test specimens from a material or component, an instrumented indentation test described in ISO 14577-1, 14577-2 or KS B 0950 can be used to measure material properties and damage. In this study, first of all, the principals of the instrumented indentation test, KS B 0950 are introduced and yield strengths, tensile strengths and work hardening exponents of base materials, heat affected zones and weld materials are measured. In addition, the influence of post-weld heat treatment on the material properties are investigated.

키워드