Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels

The effects of carbon contents on the mechanical properties and deformation behavior of medium Mn steels, 6Mn steels with 0.06C, 0.15C, and 0.3C, were investigated in this study. With the increase of the carbon content, not only the ultimate tensile stress, but also the total elongation, was increas...

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Main Authors: Yuming Zou, Hua Ding, Zhengyou Tang
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/11/4/667
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author Yuming Zou
Hua Ding
Zhengyou Tang
author_facet Yuming Zou
Hua Ding
Zhengyou Tang
author_sort Yuming Zou
collection DOAJ
description The effects of carbon contents on the mechanical properties and deformation behavior of medium Mn steels, 6Mn steels with 0.06C, 0.15C, and 0.3C, were investigated in this study. With the increase of the carbon content, not only the ultimate tensile stress, but also the total elongation, was increased (from 22.44% to 40.23%). The enhancement of carbon content promoted the diffusion of C and Mn atoms from ferrite to austenite and led to an increase of C and Mn concentrations in austenite, which increased both the volume fraction (from 15.5 vol% to 39.7 vol%) and the stability of austenite; therefore, the transformation-induced plasticity (TRIP) effect was intensified and larger amount of austenite transform in a greater strain range, which could continuously provide work hardening for the steels, thus preventing necking and improving the ductility of the material.
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spelling doaj.art-800dd1ed5db343ecb4ec24261de050ce2023-11-21T16:14:53ZengMDPI AGMetals2075-47012021-04-0111466710.3390/met11040667Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn SteelsYuming Zou0Hua Ding1Zhengyou Tang2School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaThe effects of carbon contents on the mechanical properties and deformation behavior of medium Mn steels, 6Mn steels with 0.06C, 0.15C, and 0.3C, were investigated in this study. With the increase of the carbon content, not only the ultimate tensile stress, but also the total elongation, was increased (from 22.44% to 40.23%). The enhancement of carbon content promoted the diffusion of C and Mn atoms from ferrite to austenite and led to an increase of C and Mn concentrations in austenite, which increased both the volume fraction (from 15.5 vol% to 39.7 vol%) and the stability of austenite; therefore, the transformation-induced plasticity (TRIP) effect was intensified and larger amount of austenite transform in a greater strain range, which could continuously provide work hardening for the steels, thus preventing necking and improving the ductility of the material.https://www.mdpi.com/2075-4701/11/4/667carbon contentwork hardeningaustenite stabilitymanganese concentration
spellingShingle Yuming Zou
Hua Ding
Zhengyou Tang
Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels
Metals
carbon content
work hardening
austenite stability
manganese concentration
title Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels
title_full Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels
title_fullStr Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels
title_full_unstemmed Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels
title_short Effect of Carbon Content on Deformation Behavior and Partitioning of Manganese in Medium-Mn Steels
title_sort effect of carbon content on deformation behavior and partitioning of manganese in medium mn steels
topic carbon content
work hardening
austenite stability
manganese concentration
url https://www.mdpi.com/2075-4701/11/4/667
work_keys_str_mv AT yumingzou effectofcarboncontentondeformationbehaviorandpartitioningofmanganeseinmediummnsteels
AT huading effectofcarboncontentondeformationbehaviorandpartitioningofmanganeseinmediummnsteels
AT zhengyoutang effectofcarboncontentondeformationbehaviorandpartitioningofmanganeseinmediummnsteels