The Brittle-to-Ductile Transition Behaviour in Fe-Al Single Crystalline Alloys

Ushioda, Kohsaku; Higashida, Kenji; Tanaka, Masaki; Maeno, Keiki; Fujikura, Masahiro

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Home > Advanced Materials Research > THERMEC 2011 Supplement > The Brittle-to-Ductile Transition Behaviour in...

Paper Title:

The Brittle-to-Ductile Transition Behaviour in Fe-Al Single Crystalline Alloys

Periodical	Advanced Materials Research (Volume 409)
Main Theme	THERMEC 2011 Supplement
Edited by	T. Chandra, M. Ionescu and D. Mantovani
Pages	243-248
DOI	10.4028/www.scientific.net/AMR.409.243
Citation	Keiki Maeno et al., 2011, Advanced Materials Research, 409, 243
Online since	November, 2011
Authors	Keiki Maeno, Masaki Tanaka, Kenji Higashida, Masahiro Fujikura, Kohsaku Ushioda
Keywords	Brittle-To-Ductile Transition (BDT), Deformation Twinning, Ferritic Steel
Price	US$ 28,-

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Abstract

The morphology of deformation twinning, which influences a brittle fracture at low temperatures, was investigated in Fe-8mass%Al. Tensile tests were performed at 129K and room temperature. The specimen tested at room temperature showed yielding and kept deformed by usual slip while the specimen tested at 129K fractured in a brittle manner in an elastic regime with a number of straight markings due to deformation twinning. Detail analysis of those deformation twins suggests that the collision of deformation twinning is the initiation site of the brittle fracture.