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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
Author(s) -
Wietbrock B.,
Xiong W.,
Bambach M.,
Hirt G.
Publication year - 2011
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201000248
Subject(s) - materials science , manganese , strain rate , flow stress , stress (linguistics) , ternary operation , austenite , metallurgy , analytical chemistry (journal) , strain (injury) , compression (physics) , composite material , chemistry , microstructure , chromatography , medicine , linguistics , philosophy , computer science , programming language
In this work compression tests were performed to characterize the flow behavior of three different high manganese austenitic steels (HMS) in dependence of temperature (300–1200 °C) and strain rate (0.1‐10 s −1 ). True stress‐true strain curves were calculated from the experimental data. Temperature compensation was applied to remove the effects of adiabatic heating. At 300 °C the influence of strain rate is small but rapidly increases with temperature. DRX can be observed above 1100 °C for all HMS with 23 wt% Mn starting from the smaller strain rates. Higher Mn contents seem to promote DRX which occurs first for a 28 wt% Mn steel at 1000°C. While an increasing Mn content decreases the maximum flow stress at smaller temperatures, the opposite is found at temperatures above 700 °C. Carbon influences the stress‐strain curves mainly at temperatures below 700 °C as it raises the maximum stress levels. At temperatures above 1100 °C all three investigated HMS show similar flow curves. By increasing the temperature from 300 °C to 1200 °C the initial flow stresses are reduced by a factor of ten. The maximum flow stress levels are decreased by a factor of eight (Fe‐Mn28‐C0.3), ten (Fe‐Mn23C0.3) and eleven (Fe‐Mn23C0.6).