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Funct. Mater. 2018; 25 (2): 371-375.

doi:https://doi.org/10.15407/fm25.02.371

Effects of deformation temperature on edge crack characteristics and mechanical properties of as-cast aluminum alloy

Yongyue Liu1,2,3, Peng Jiang2, Xueping Ren1, Xian Luo1, Zelin Gu2, Dianyu Fu2

1School of Materials Science and Technology, University of Science and Technology Beijing, Beijing, 100083, China
2Forging Technology Center, Beijing Research Institute of Mechanical and Electrical Technology Beijing, 100083, China
3Technology Center, Ningbo Heli Mould Technology Shareholding Co., Ltd , Ningbo, 315700, China

Abstract: 

In this study, the rolling technique of aluminum alloy was investigated, and the effects of deformation temperature on the edge cracks and mechanical properties of aluminum alloy were studied through a hot compression experiment on high magnesium aluminum alloy. Based on the test, DEFORM-3D software was introduced to optimize the selection of the influence conditions of the experiment. The research results suggested that the crack length of the as-cast aluminum alloy samples decreased with the increase of temperature when the deformation temperature was between 300 °C and 450 °C; the tensile strength and elongation after fracture increased with the increase of temperature when the deformation temperature was between 300 °C and 500 °C. Therefore it is concluded that the cracks of high magnesium aluminum alloy can be reduced through controlling deformation temperature, which provides an idea for the optimization of aluminium alloy.

Keywords: 
deformation temperature; as-cast aluminum alloy; heat compression; cracks; tensile strength; elongation after fracture.
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