AZ61镁合金在形变诱导法中的组织演变  

Microstructure Evolution of AZ61 Magnesium Alloy with SIMA Process

作　　者：闫洪[1] 张发云[1] 揭小平[1] 罗忠民[1] 杨国 

机构地区：[1]泰南昌大学,南昌330029

出　　处：《中国机械工程》2005年第8期719-722,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50465003);江西省自然科学基金资助项目(0350005);华中科技大学塑性成形及模具技术国家重点实验室开放基金资助项目(04-8)

摘　　要：研究了AZ61镁合金在应力诱发熔体激活法(SIMA)制备半固态坯料过程中预变形量、等温温度和保温时间对其组织的影响。试验样品经过0、22%、40%的预变形和不同等温热处理条件处理,结果表明,制备AZ61 镁合金半固态非枝晶组织的理想工艺参数为形变量22%、等温温度595℃、保温时间40min。未预变形AZ61镁合金不宜进行半固态制坯。The microstructure of AZ61 magnesium alloy by strain-induced melt activation (SI-MA) process was studied to reveal the effects of prior compressive deformation, isothermal temperature and holding time. The specimens were subjected to deformation ratios of 0, 22% and 40% and various heat treatment time and temperature regimes. The results indicate that optimum technological parameters of semi-solid AZ61 alloy with non-dendrites produced are as 22% (prior compressive deformation), 595°C (heat treatment temperature) and 40min(time). Original AZ61 magnesium alloy does not fit to the requirements of semi-solid forming.

关 键 词：应力诱发熔体激活法 AZ61镁合金 非枝晶组织 组织演变 

分 类 号：TG146.22[一般工业技术—材料科学与工程]