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Title: Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength

Abstract

The effects of athermal martensite on yielding behavior and strain partitioning during deformation is explored using in situ neutron diffraction for a 0.14C–7.14Mn medium manganese steel. Utilizing a novel heat treatment, termed double soaking, samples with similar microstructural composition and varied athermal martensite strength and microstructural characteristics, which composed the bulk of the matrix phase, were characterized. It was found that the addition of either as-quenched or tempered athermal martensite led to an improvement in mechanical properties as compared to a ferrite plus austenite medium manganese steel, although the yielding and work hardening behavior were highly dependent upon the martensite characteristics. Specifically, athermal martensite was found to promote continuous yielding and improve the work hardening rate during deformation. The results of this study are particularly relevant when considering the effect of post-processing thermal heat treatments, such as tempering or elevated temperature service environments, on the mechanical properties of medium manganese steels containing athermal martensite.

Authors:
; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1532420
Grant/Contract Number:  
89233218CNA000001; -
Resource Type:
Published Article
Journal Name:
Metals
Additional Journal Information:
Journal Name: Metals Journal Volume: 9 Journal Issue: 7; Journal ID: ISSN 2075-4701
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English

Citation Formats

Glover, Alexandra, Gibbs, Paul J., Liu, Cheng, Brown, Donald W., Clausen, Bjørn, Speer, John G., and De Moor, Emmanuel. Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength. Switzerland: N. p., 2019. Web. doi:10.3390/met9070761.
Glover, Alexandra, Gibbs, Paul J., Liu, Cheng, Brown, Donald W., Clausen, Bjørn, Speer, John G., & De Moor, Emmanuel. Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength. Switzerland. doi:10.3390/met9070761.
Glover, Alexandra, Gibbs, Paul J., Liu, Cheng, Brown, Donald W., Clausen, Bjørn, Speer, John G., and De Moor, Emmanuel. Sun . "Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength". Switzerland. doi:10.3390/met9070761.
@article{osti_1532420,
title = {Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength},
author = {Glover, Alexandra and Gibbs, Paul J. and Liu, Cheng and Brown, Donald W. and Clausen, Bjørn and Speer, John G. and De Moor, Emmanuel},
abstractNote = {The effects of athermal martensite on yielding behavior and strain partitioning during deformation is explored using in situ neutron diffraction for a 0.14C–7.14Mn medium manganese steel. Utilizing a novel heat treatment, termed double soaking, samples with similar microstructural composition and varied athermal martensite strength and microstructural characteristics, which composed the bulk of the matrix phase, were characterized. It was found that the addition of either as-quenched or tempered athermal martensite led to an improvement in mechanical properties as compared to a ferrite plus austenite medium manganese steel, although the yielding and work hardening behavior were highly dependent upon the martensite characteristics. Specifically, athermal martensite was found to promote continuous yielding and improve the work hardening rate during deformation. The results of this study are particularly relevant when considering the effect of post-processing thermal heat treatments, such as tempering or elevated temperature service environments, on the mechanical properties of medium manganese steels containing athermal martensite.},
doi = {10.3390/met9070761},
journal = {Metals},
number = 7,
volume = 9,
place = {Switzerland},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.3390/met9070761

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Works referenced in this record:

A profile refinement method for nuclear and magnetic structures
journal, June 1969