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Effects of the austenitizing temperature on the microstructure and mechanical properties in multiple-phase medium Mn steel
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Engn Technol, Beijing 100083, Peoples R China..
Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Engn Technol, Beijing 100083, Peoples R China..
Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Engn Technol, Beijing 100083, Peoples R China.;Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China..
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2019 (English)In: MATERIALS RESEARCH EXPRESS, ISSN 2053-1591, Vol. 6, no 12, article id 1265c9Article in journal (Refereed) Published
Abstract [en]

Medium Mn steel (MMnS) is the good choice for car manufacturers to meet the requirements of reducing the weight of automobiles. Quenching & Partitioning (Q&P) process is an effective method to stabilize austenite in advanced steel, thus prompting the comprehensive mechanical properties of advanced steel. In this article, the Q&P process is applied to the MMnS to explore potential mechanical properties. The effect of austenitizing temperature, one of the significant parameters of Q&P process, on the microstructure and mechanical properties of MMnS was investigated. According to microstructural analyse results, all of the MMnS specimens processed by Q&P treatment with different austenitizing temperatures could obtain multi-phase microstructure, including alpha '-martensite, e-martensite and austenite. Furthermore, the highest volume fraction of austenite was observed in the MMnS processed by Q&P treatment at the austenitizing temperature of 920 degrees C. Due to the facilitated transformation-induced plasticity effect resulted from the high volume fraction of austenite with the austenitizing temperature of 920 degrees C, the MMnS obtained the high strength, high plasticity and sustaining work-hardening rate.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2019. Vol. 6, no 12, article id 1265c9
Keywords [en]
medium Mn steel, quenching and partitioning, austenitizing temperature, microstructure, mechanical properties
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-267180DOI: 10.1088/2053-1591/ab61afISI: 000507862800001OAI: oai:DiVA.org:kth-267180DiVA, id: diva2:1391227
Note

QC 20200204

Available from: 2020-02-04 Created: 2020-02-04 Last updated: 2020-02-04Bibliographically approved

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