摘要
由于镁是密排六方结构,只有有限的滑移系,又缺乏有效的强化相,限制了镁合金的工程应用。本文通过不同温度下镁合金的塑性极限变形量来分析镁合金强度和塑性的影响因素。通过实验研究了塑性变形对AZ31合金组织和性能的影响。结果表明,在350℃下镁合金的极限变形量可达到79%,在不同压缩变形下,变形量越大,晶粒越细,分布越均匀。变形量达到70%时,晶粒尺寸基本为2-3μm。
Magnesium is of six-party row structure, only has a limited slip system, and lacking of an effective strengmening phase, so the application of magnesium alloy is restricted. Based on the different temperatures of magnesium alloy plastic deformation limit of magnesium alloy, the plastic strength of the plastic impact factors were analyzed. Through experiments on the plastic deformation of the alloy AZ31, it is concluded that under 350 ℃, magnesium alloy maximum reduction is up to 77.8%, in different deformations, the bigger deformation, the more fine grain distribution. When the deformation is up to 70%, the basic grain size is of 2 - 3 μm.
出处
《锻压技术》
CAS
CSCD
北大核心
2009年第1期146-148,共3页
Forging & Stamping Technology
基金
陕西理工学院科研项目(SLG0728)
关键词
塑性变形
极限变形量
晶粒尺寸
plastic deformation
limit deformation
grain size
