Lowering Strain Rate Simultaneously Enhances Carbon- and Hydrogen-Induced Mechanical Degradation in an Fe-33Mn-1.1C Steel


Tugluca I. B. , Koyama M., Shimomura Y., BAL B. , Canadinc D., Akiyama E., ...More

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, no.3, pp.1137-1141, 2019 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Publication Date: 2019
  • Doi Number: 10.1007/s11661-018-5080-7
  • Title of Journal : METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
  • Page Numbers: pp.1137-1141

Abstract

We investigated the strain rate dependency of the hydrogen-induced mechanical degradation of Fe-33Mn-1.1C steel at 303K within the strain rate range of 10(-2) to 10(-5)s(-1). In the presence of hydrogen, lowering the strain rate monotonically decreased the work hardening rate, elongation, and tensile strength and increased the yield strength. Lowering the strain rate simultaneously enhanced the plasticity-related effects of hydrogen and carbon, leading to the observed degradation of the ductility.