Research on flow stress of spray formed 70Si30Al alloy under hot compression deformation

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Abstract

The flow stress of spray formed 70Si30Al alloy was studied by hot compression on a Gleeble-1500 test machine. The experimental results indicated that the flow stress depends on the strain rate and the deformation temperature. The flow stress increases with an increase in strain rate at a given deformation temperature. The flow stress decreases with the deformation temperature increasing at a given strain rate. The relational expression among the flow stress, the strain rate, and the deformation temperature satisfies the Arrhenius equation. The deformation activation energy of 70Si30Al alloy during hot deformation is 866.27 kJ/mol from the Arrhenius equation.

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Wei, Y., Xiong, B., Zhang, Y., Liu, H., Zhu, B., & Wang, F. (2006). Research on flow stress of spray formed 70Si30Al alloy under hot compression deformation. Rare Metals, 25(6), 665–670. https://doi.org/10.1016/S1001-0521(07)60010-2

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