Effect of Temperature, Strain rate, Manganese and Carbon Content on flow Behavior of three Ternary Fe-Mn-C (Fe-Mn23-C0.3, Fe-Mn23-C0.6, Fe-Mn28-C0.3) High-Manganese Steels

2010 ◽  
Vol 82 (1) ◽  
pp. 63-69 ◽  
Author(s):  
B. Wietbrock ◽  
W. Xiong ◽  
M. Bambach ◽  
G. Hirt
2014 ◽  
Vol 59 (3) ◽  
pp. 1193-1197 ◽  
Author(s):  
M.B. Jabłońska

Abstract 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.


2019 ◽  
Vol 50 (12) ◽  
pp. 5760-5766 ◽  
Author(s):  
Madhumanti Bhattacharyya ◽  
Yves Brechet ◽  
Gary R. Purdy ◽  
Hatem S. Zurob

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 24
Author(s):  
Matías Bordone ◽  
Juan Perez-Ipiña ◽  
Raúl Bolmaro ◽  
Alfredo Artigas ◽  
Alberto Monsalve

This article is focused on the mechanical behavior and its relationship with the microstructural changes observed in two high-manganese steels presenting twinning-induced plasticity (TWIP) and transformation-induced plasticity (TRIP), namely Steel B and Steel C, respectively. Chemical compositions were similar in manganese, but carbon content of Steel B approximately doubles Steel C, which directly impacted on the stacking fault energy (SFE), microstructure and mechanical response of each alloy. Characterization of as-cast condition by optical microscope revealed a fully austenitic microstructure in Steel B and a mixed microstructure in Steel C consisting of austenite grains and thermal-induced (εt) martensite platelets. Same phases were observed after the thermo-mechanical treatment and tensile tests, corroborated by means of X-Ray Diffraction (XRD), which confirms no phase transformation in Steel B and TRIP effect in Steel C, due to the strain-induced γFCC→εHCP transformation that results in an increase in the ε-martensite volume fraction. Higher values of ultimate tensile strength, yield stress, ductility and impact toughness were obtained for Steel B. Significant microstructural changes were revealed in tensile specimens as a consequence of the operating hardening mechanisms. Scanning Electron Microscopy (SEM) observations on the tensile and impact test specimens showed differences in fracture micro-mechanisms.


2018 ◽  
Vol 63 (2) ◽  
pp. 491-499
Author(s):  
Benjamin Wittig ◽  
Manuela Zinke ◽  
Sven Jüttner ◽  
Daniel Keil

Sign in / Sign up

Export Citation Format

Share Document