Effect of Heat Treatment on Microstructure and Mechanical Properties of Cold-Rolled 17Mn-1.58Al TWIP Steel

Sinyoung Kim; Chungseok Kim

doi:10.3740/MRSK.2023.33.11.482

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2023 Vol.33, Issue 11 Preview Page Next Page

Research Paper

Effect of Heat Treatment on Microstructure and Mechanical Properties of Cold-Rolled 17Mn-1.58Al TWIP Steel 냉간 압연한 17Mn-1.58Al TWIP강의 미세조직 및 기계적 특성에 미치는 열처리 영향

27 November 2023. pp. 482-490

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Abstract

The purpose of this study was to analyze microstructural changes and evaluate the mechanical properties of TWIP steel subjected to variations in heat treatment, in order to identify optimal process conditions for enhancing the performance of TWIP steel. For this purpose, a homogenization heat treatment was conducted at 1,200 °C for 2 h, followed by hot rolling at temperature exceeding 1,100 °C and cold rolling. Annealing heat treatment is achieved using a muffle furnace in the range of 600 °C to 1,000 °C. The microstructure characterization was performed with an optical microscope and X-ray diffraction. Mechanical properties are evaluated using micro Vickers hardness, tensile test, and ECO index (UTS × Elongation). The specimens annealed at 900 °C and 1,000 °C experienced a significant decrease in hardness and strength due to decarburization. Consequently, the decarburization phenomenon is closely related to the heat treatment process and mechanical properties of TWIP steel, and the effect of the microstructure change during annealing heat treatment.

Keywords

twip

annealing

microstructure

decarburization

eco index.

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 33
No :11
Pages :482-490
Received Date : 2023-09-16
Revised Date : 2023-11-09
Accepted Date : 2023-11-10
DOI :https://doi.org/10.3740/MRSK.2023.33.11.482

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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