Microstructure and mechanical properties of a medium manganese steel treated with interrupted quenching and intercritical annealing

Toshihiro Tsuchiyma; Taishi Inoue; Junya Tobata; Daichi Akama; Setsuo Takaki

doi:10.1016/j.scriptamat.2016.05.019

Microstructure and mechanical properties of a medium manganese steel treated with interrupted quenching and intercritical annealing

Toshihiro Tsuchiyma, Taishi Inoue, Junya Tobata, Daichi Akama, Setsuo Takaki

Materials Processing

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

An Fe-5Mn-0.1C alloy was subjected to interrupted quenching, which involves quenching to a temperature between the martensite start temperature (M_s) and finish temperature (M_f), and subsequent intercritical annealing. This resulted in the formation of a unique multi-phase structure consisting of tempered martensite, two types of retained austenite, namely granular and film-like, and fresh martensite. The film-like austenite was observed in the area swept by the untransformed austenite/tempered martensite interface, which is formed during intercritical annealing. Tensile testing revealed that the fresh martensite was effective for increasing the strength, whilst adequate ductility was achieved owing to the transformation-induced plasticity (TRIP) effect.

Original language	English
Pages (from-to)	36-39
Number of pages	4
Journal	Scripta Materialia
Volume	122
DOIs	https://doi.org/10.1016/j.scriptamat.2016.05.019
Publication status	Published - Sep 1 2016

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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abstract = "An Fe-5Mn-0.1C alloy was subjected to interrupted quenching, which involves quenching to a temperature between the martensite start temperature (Ms) and finish temperature (Mf), and subsequent intercritical annealing. This resulted in the formation of a unique multi-phase structure consisting of tempered martensite, two types of retained austenite, namely granular and film-like, and fresh martensite. The film-like austenite was observed in the area swept by the untransformed austenite/tempered martensite interface, which is formed during intercritical annealing. Tensile testing revealed that the fresh martensite was effective for increasing the strength, whilst adequate ductility was achieved owing to the transformation-induced plasticity (TRIP) effect.",

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AU - Tsuchiyma, Toshihiro

AU - Inoue, Taishi

AU - Tobata, Junya

AU - Akama, Daichi

AU - Takaki, Setsuo

PY - 2016/9/1

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