Mechanical Properties and Fractographic Analysis of High Manganese Steels After Dynamic Deformation Tests

Archives of Metallurgy and Materials

M.B. Jabłońska¹ 

[1] SILESIAN UNIVERSITY OF TECHNOLOGY, FACULTY MATERIALS ENGINEERING AND METALLURGY, INSTITUTE OF MATERIALS SCIENCE, 40-019 KATOWICE, POLAND;

关键词: Keywords: high manganese steels;    dynamic deformation test;    strain rate;    fracture;   

DOI  :  10.2478/amm-2014-0207

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Since few years many research centres conducting research on the development of high-manganese steels for manufacturing of parts for automotive and railway industry. Some of these steels belong to the group of AHS possessing together with high strength a great plastic elongation, and an ideal uniform work hardening behavior. The article presents the dynamic mechanical properties of two types of high manganese austenitic steel with using a flywheel machine at room temperature with strain rates between 5×102÷3.5×103s?–1. It was found that the both studied steels exhibit a high sensitivity Rm to the strain rate. With increasing the strain rate from 5×102 to 3.5×103s?–1 the hardening dominates the process. The fracture analysis indicate that after dynamic test both steel is characterized by ductile fracture surfaces which indicate good plasticity of investigated steels.

【 授权许可】

Unknown