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Refinement of retained austenite in super-bainitic steel by a deep cryogenic treatment

Hu,F, Wu,K, Hodgson,PD and Shirzadi,AA 2014, Refinement of retained austenite in super-bainitic steel by a deep cryogenic treatment, ISIJ International, vol. 54, no. 1, pp. 222-226, doi: 10.2355/isijinternational.54.222.

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Title Refinement of retained austenite in super-bainitic steel by a deep cryogenic treatment
Author(s) Hu,F
Wu,K
Hodgson,PD
Shirzadi,AA
Journal name ISIJ International
Volume number 54
Issue number 1
Start page 222
End page 226
Total pages 5
Publisher Iron and Steel Institute of Japan
Place of publication Tokyo, Japan
Publication date 2014
ISSN 0915-1559
Keyword(s) Cryogenic treatment
Martensite
Retained austenite
Super-bainitic steel
Science & Technology
Technology
Metallurgy & Metallurgical Engineering
LOW-TEMPERATURE BAINITE
MECHANICAL-PROPERTIES
BEHAVIOR
Summary The effect of a deep cryogenic treatment on the microstructure of a super-bainitic steel was investigated. It was shown that quenching the super-bainitc steel in -196°C liquid nitrogen resulted in the transformation of retained austenite to two phases: ~20 nm thick martensite films and some nano carbides with a ~25 nm diameter. Some refinement of the retained austenite occurred, due to formation of fine martensite laths within the retained austenite. The evolution of these new phases resulted in an increase in the average hardness of the super-bainitic steel from 641 to ~670 HV1. © 2014 ISIJ.
Language eng
DOI 10.2355/isijinternational.54.222
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Iron and Steel Institute of Japan
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071737

Document type: Journal Article
Collection: Institute for Frontier Materials
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