Effect of the Rolling Process on Microstructures and Mechanical Properties of the Extruded LA91 Alloy Sheet

Bin Jiang; Qing Shan Yang; Liang Gao; Fu Sheng Pan

doi:10.4028/www.scientific.net/MSF.686.90

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HomeMaterials Science ForumMaterials Science Forum Vol. 686Effect of the Rolling Process on Microstructures...

Effect of the Rolling Process on Microstructures and Mechanical Properties of the Extruded LA91 Alloy Sheet

Abstract:

The microstructure evolution of the extruded Mg-9Li-1Al (LA91) during rolling was investigated taking account of effects of different routes including hot rolling, and cross rolling. The rolling parameters were suggested by thermal compression testing. As a result, the suggested rolling parameters were 250°C and 1.0s-1. Transverse hot rolling would bring a finer microstructure to the as-rolled LA91 sheet. With the enhancement of the rolling reduction during unidirectional hot rolling the α-Mg phase became granular or short rod-like from long strip-like. Transverse + longitudinal hot rolling would improve the microstructure and was a better cross rolling route by which the strength and the elongation of the cross rolled LA91 sheet reached 243MPa and 20% respectively. The over-aging existed in the cross rolled LA91 sheets.

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Periodical:

Materials Science Forum (Volume 686)

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90-95

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.686.90

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Online since:

June 2011

Authors:

Bin Jiang, Qing Shan Yang, Liang Gao, Fu Sheng Pan

Keywords:

Cross Rolling, Mg-9Li-1Al Alloy, Microstructure

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