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Synthesis of submicrometer-grained-ultrahigh-carbon steel containing 10% aluminum by ball-milling of powders

Published online by Cambridge University Press:  31 January 2011

Eric M. Taleff ,
Mamoru Nagao ,
Yoshio Ashida  and
Oleg D. Sherby
Eric M. Taleff
Affiliation:
Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, Texas 78712-1085
Mamoru Nagao
Affiliation:
Materials Design Section, Materials Research Laboratory, Kobe Steel, Ltd., 1-5-5 Takatukadai, Nishi-ku, Hyogo, Japan
Yoshio Ashida
Affiliation:
Materials Design Section, Materials Research Laboratory, Kobe Steel, Ltd., 1-5-5 Takatukadai, Nishi-ku, Hyogo, Japan
Oleg D. Sherby
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, California 94305–2205
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Abstract

An ultrahigh-carbon (1.25 wt.%) steel alloy containing 10 wt.% aluminum (UHCS–10Al) was processed by a powder metallurgy technique. Gas-atomized powders were subjected to ball-milling in an attritor in order to obtain a submicrometer grain size. Powder material was consolidated by both hot isostatic pressing (HIP) and by hot isopressure extrusion (HIE). Bulk material with submicrometer grain sizes was produced from attrited powders. The chemical composition and microstructure of this material are characterized at each processing step, from atomization through consolidation. Tensile tests show that a high strength results from the submicrometer grain size produced in the bulk material.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 11 , November 1996 , pp. 2725 - 2730
Copyright
Copyright © Materials Research Society 1996

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