Influence of Asymmetric Rolling on the Deformation Textures, Grain Size and Mechanical Properties of B4C/Al Composite

Bing Feng Li; Qiu Lin Li; Wei Liu; Zhen Hong Wang

doi:10.4028/www.scientific.net/AMM.851.196

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 851Influence of Asymmetric Rolling on the Deformation...

Influence of Asymmetric Rolling on the Deformation Textures, Grain Size and Mechanical Properties of B₄C/Al Composite

Abstract:

B₄C/Al composite was a promising neutron absorb material. In this work, B₄C/Al composite sheets were asymmetrically rolled and annealed. The asymmetric (ASR) condition was introduced by applying mismatched roll diameters with diameter ratios of 1.1, 1.2 and 1.3, respectively., while the symmetric rolling (SR) was used as the control experiment. Mechanical properties and microstructures of the composite were tested after cold rolling and annealing. Results showed that: ASR with small diameter ratio decreased the texture volume fraction in the B₄C/Al composite, but when diameter ratio of ASR reached 1.3 new slip systems were actuated and the texture volume fraction started to increase. The average grain size of the aluminium matrix was smaller after ASR, and it decreased with the increasing diameter ratio. The hardness of B₄C/Al composite after ASR was about 40% higher than the one rolled by symmetric rolling, proved that ASR is a promising way to enhance the properties of B₄C/Al composite.

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Periodical:

Applied Mechanics and Materials (Volume 851)

Pages:

196-200

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.851.196

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Online since:

August 2016

Authors:

Bing Feng Li, Qiu Lin Li*, Wei Liu, Zhen Hong Wang

Keywords:

Asymmetric Rolling, B₄C/Al Composite, Deformation Texture, Grain Refinement

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