Double change channel angular pressing of magnesium alloys AZ31
Double change channel angular pressing of magnesium alloys AZ31
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DOI：
10.1016/j.matdes.2011.09.039
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发表时间：
2012-03
影响因子：
8.4
通讯作者：
Liwei Lu;Tianmo Liu;Yong Chen;Liguang Wang;Zhongchang Wang
中科院分区：
文献类型：
--
作者：
Liwei Lu;Tianmo Liu;Yong Chen;Liguang Wang;Zhongchang Wang
提出了一种新的挤压技术，即双变通道角挤压 (DCCAP)，并将其应用于技术上重要的镁合金 AZ31。发现进行一次 DCCAP 后合金晶粒显着细化，这归因于严重累积的应变和应力引起的动态再结晶。晶粒细化，加上显着改变的织构和拉伸断裂，导致 AZ31 合金的机械性能显着增强。这种 DCCAP 技术被认为能够作为一种有效的加工方法来为广泛的工程应用定制镁合金。
A new extrusion technique, the double change channel angular pressing (DCCAP), is proposed and applied to the technologically important Mg alloys AZ31. The grains of the alloys are found to be refined remarkably by conducting the DCCAP once, which is attributed to dynamic recrystallization induced by heavily accumulated strain and stress. The grain refinement, together with significantly modified textures and tensile fractures, results in a drastic enhancement of mechanical properties of the AZ31 alloys. This DCCAP technique is believed to be able to serve as an effective processing way to tailor Mg alloys for a wide range of engineering applications.