Fe-Mn-Al-C Austenitic Steels Treated by Ca and Ce
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.
S. N. Lekakh et al., "Fe-Mn-Al-C Austenitic Steels Treated by Ca and Ce," TMS Symposium Proceedings, The Minerals, Metals & Materials Society (TMS), Jan 2010.
2010 TMS Annual Meeting & Exhibition
Materials Science and Engineering
Peaslee Steel Manufacturing Research Center
Article - Journal
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