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Metallurgical and Materials Transactions A
Published in: Metallurgical and Materials Transactions A 12/2011

01-12-2011 | Symposium: Austenite Formation and Decomposition IV

Localized Deformation in Multiphase, Ultra-Fine-Grained 6 Pct Mn Transformation-Induced Plasticity Steel

Authors: Seawoong Lee, Seok-Jae Lee, S. Santhosh Kumar, Kyooyoung Lee, B. C. De Cooman

Published in: Metallurgical and Materials Transactions A | Issue 12/2011

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Abstract

Multiphase, ultra-fine-grained transformation-induced plasticity (MP UFG TRIP) steel containing 6 mass pct Mn was obtained by cold rolling and intercritical annealing of an initially fully martensitic microstructure. UFG microstructures with an average grain size less than 300 nm were obtained. The amount of austenite in the microstructures, speculated to be formed by diffusionless transformation, was controlled by changing the intercritical temperature. The tensile properties were strongly influenced by the volume amount and the stability of the reversely transformed austenite. The MP UFG TRIP steel was characterized by pronounced localization of the deformation. The deformation band properties were analyzed in detail.
previous article Stability of Retained Austenite in High-Al, Low-Si TRIP-Assisted Steels Processed via Continuous Galvanizing Heat Treatments
next article Quenched and Partitioned Microstructures Produced via Gleeble Simulations of Hot-Strip Mill Cooling Practices

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Footnotes
1
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Metadata
Title
Localized Deformation in Multiphase, Ultra-Fine-Grained 6 Pct Mn Transformation-Induced Plasticity Steel
Authors
Seawoong Lee
Seok-Jae Lee
S. Santhosh Kumar
Kyooyoung Lee
B. C. De Cooman
Publication date
01-12-2011
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 12/2011
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-011-0636-9

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