What is it about?
The influence of the heat treatment on mechanical properties and microstructures of the Fe-22Mn-0.6C high-manganese steel was investigated at different annealing temperatures. A high-Mn TWIP (Twinning Induced Plasticity) steel specimens (0.6C, 24Mn steel) were fabricated, and were annealed at 700, 900, and 1100◦C for 150 min and then air-cooled. The carbide precipitates in the microstructure of specimens were annealed at 700◦C. However, the microstructure of specimens annealed at 900 and 1100◦C is austenite and some grains include annealing and mechanical twins. The results show that tensile strength of the material decreased, and the ductility of material was improved with increasing annealing temperature. Besides that, hardness value decreased between 700 and 1100◦C, which shows a good agreement with the equilibrium dissolution temperature of M3C carbides.
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Perspectives
In this study, the influence of annealing temperature and annealing time on the mechanical properties and microstructure of Fe-24Mn-0.6C TWIP steel are investigated. However, the formation of twinning and dissolution of carbides also are investigated by increasing of annealing temperature.
Dr Yuksel AKINAY
Karabuk Universitesi
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This page is a summary of: The influence of the heat treatment on mechanical and microstructure properties of Fe-Mn-C high-manganese steel, Kovove Materialy-Metallic Materials, January 2016, AEPress, s.r.o.,
DOI: 10.4149/km_2016_2_91.
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