Hot deformation behavior and processing map of WE43 biodegradation magnesium alloy
LI Deng-lu1,2, LIU De-xue 1,2, PANG Xin1,2, YIN Xun-yan1,2
（1.College of Material Science and Technology, Lanzhou 730050, Gansu,China 2.State Key Laboratory of Advanced Processing and Recyling of Nonferrous Metals, Lanzhou 730050, Gansu, China
Abstract：The flow behavior of WE43 biodegradation magnesium alloys was investigated using Gleeble-1500D thermal simulation test machine at deformation temperation of 350～500 ℃, strain rates of 0.001～1 s-1 and the final strain of 60%. Furthermore, the hot processing maps were set up. The experimental results indicated that the flow sress of the alloy decrease with increasing of deformation temperature and decreaseing of strain rate. Meanwhile, the deformation activation energy and stress exponent were attained according to the hyperbolic-sine model and the flow stress constitutive relationship was established. In processing maps, the power dissipation factor first increases and then decline with the increase of temperature and the decrease of strain rate. Optimal processing parameters were the deformation temperature of 400～450 ℃ and the strain rate range of 0.003～0.02 s-1.
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2016, Vol. 23 
