Title

Fe-Mn-Al-C Austenitic Steels Treated by Ca and Ce

Abstract

Phosphorous segregated at grain boundaries during solidification and heat treatment dramatically decreases low temperature toughness of precipitation hardened Fe-Mn-Al austenitic steel. Thermo-dynamical analysis was performed for evaluation of the possibility of decreasing Pgrain boundary segregation by Ce- and Ca-additives in the melt. It was shown that the predicted probability of P containing compound formation depends on melt composition and treatment sequence. Experimental heats were performed and the several micro-and macro-structural effects of Ce- and Ca-additives were recognized by using automated inclusion analyzer technique. Increasing low temperature toughness in austenitic steel by complex Ca-wire injection followed by Cemishmetal additions was achieved.

Meeting Name

2010 TMS Annual Meeting & Exhibition

Department(s)

Materials Science and Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 The Minerals, Metals & Materials Society (TMS), All rights reserved.

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