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

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

doi:10.4028/www.scientific.net/AMR.409.243

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 409The Brittle-to-Ductile Transition Behaviour in...

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

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.

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Advanced Materials Research (Volume 409)

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243-248

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.409.243

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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

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