Method of producing transformation induced plasticity steels...

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

Reexamination Certificate

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C148S334000, C164S047000

Reexamination Certificate

active

07955413

ABSTRACT:
A method for producing Transformation Induced Plasticity (TRIP) steels comprises adding a degassing step to remove hydrogen and nitrogen prior to casting, resulting in a more fluid steel that exhibits improved castability.

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patent: 2004/0154437 (2004-08-01), Dittrich et al.
patent: 2006/0162824 (2006-07-01), Merwin
patent: 2007/0272054 (2007-11-01), Pleschiutschnigg et al.
Hongbin Yin et al, In-situ Observations and Thermodynamics of the Chemical Reaction Between AIN Particles and Molten Slag, AISTech 2006 Proceedings vol. 1,pp. 753-759.
Aleksey A. Konieczny, On the Formability of Automotive TRIP Steels, Society of Autmotive Engineers, Inc. 2003-01-0521, 6 pages.
G. J. Kor, P. C. Glaws, The Making, Shaping & Treating of Steel, 1998 Ch. 11, p. 661.

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