The microstructure of high manganese TWIP steels produced via simulated direct strip casting

Othman, Raudhah and Dorin, Thomas and Stanford, Nikki and Hodgson, Peter (2022) The microstructure of high manganese TWIP steels produced via simulated direct strip casting. Materials Science and Technology Engineering. pp. 1-10.

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Abstract

Three TWIP steels based on the composition Fe-23Mn-3Si-3.3Al with different carbon concen�trations were examined. The alloys were produced by rapid solidification in an experimental apparatus designed to simulate direct strip casting conditions. Examination of the driving force for solidification for this alloy showed the preference for BCC and FCC solidification were very close for this composition, within 10% of one another. This factor combined with the high under�cooling resulted in the change in the primary solidified phase. Chemical analysis of the as-cast strip showed inter-dendritic segregation of Si and Al, but negligible segregation of Mn. A simple heat treatment was sufficient to chemically homogenise all alloys and produce microstructures comprising a fully austenitic structure, consistent with thermodynamic predictions.

Item Type:	Article
Uncontrolled Keywords:	TWIP steel; strip casting; rapid solidification; microstructure; phase transformation; driving force; homogenization reatment; thermodynamic predictions
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Depositing User:	Mr. Abdul Rahim Mat Radzuan
Date Deposited:	12 Apr 2022 06:43
Last Modified:	12 Apr 2022 06:43
URI:	http://eprints.uthm.edu.my/id/eprint/6901

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