摘要
基于镁合金熔炼铸造提出的高效节能、批量化、稳定供应以及环保需求,确定无熔剂重熔条件下的镁合金组织和性能的变化。以ZM5镁合金为研究对象,对其进行无熔剂重熔,采用正交试验和方差的方法,对ZM5镁合金进行无熔剂重熔工艺参数的分析。分析表明:熔体保温时间对力学性能影响最大,熔体保温温度次之,气体搅拌时间影响最小。获得良好力学性能的最佳工艺参数为:熔体保温时间是40 min,熔体保温温度为740℃,气体搅拌时间是3 min。同时对ZM5镁合金的微观组织结果进行分析。结果表明:ZM5镁合金原始铸锭的晶粒非常大且枝晶丰富。无熔剂重熔后ZM5镁合金杂质中除了合金本体的元素之外,还含有O、C、Si等杂质元素。无熔剂重熔对ZM5镁合金的凝固过程不会产生明显的影响并且重熔后ZM5镁合金基本上不存在组织遗传性。
Based on the requirements of high efficiency,energy saving,batch production,stable supply and environmental protection,the microstructure and properties of magnesium alloy under non-flux remelting are determined.Taking ZM5 magnesium alloy as the research object,the non-flux remelting process parameters of ZM5 magnesium alloy are analyzed by orthogonal test and variance method.The results show that the melt holding time has the greatest influence on the mechanical properties,followed by the melt holding temperature and the gas stirring time.The optimum parameters for obtaining good mechanical properties are as follows:holding time of melt of 40 min,holding temperature of melt of 740℃,and gas stirring time of 3 min.The microstructure of ZM5 magnesium alloy is also studied.The results show that the original ZM5 ingot has very large grains and abundant dendrites.After non-flux free,ZM5 Alloy contains impurity elements such as O,C,Si in addition to the elements in the alloy.Non-flux remelting has no obvious effect on the solidification process of ZM5 Alloy,and there is no hereditary structure after remelting.
作者
李红成
张娜
董含武
罗素琴
詹俊
叶小舟
蒋斌
陈先华
潘复生
LI Hongcheng;ZHANG Na;DONG Hanwu;LUO Suqin;ZHAN Jun;YE Xiaozhou;JIANG Bin;CHEN Xianhua;PAN Fusheng(Chongqing Academy of Science and Technology, Chongqing 401123, China;School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China;College of Materials Science and Engineering, Chongqing University, Chongqing 400040, China)
出处
《功能材料》
CAS
CSCD
北大核心
2021年第6期6162-6167,共6页
Journal of Functional Materials
基金
重庆市技术创新与应用示范专项产业类重点研发资助项目(cstc2018jszx-cyzdX0082)
重庆市技术创新与应用发展专项资助项目(cstc2019jscx-mbdx0070)
重庆市自然科学基金面上项目(cstc2019jcyj-msxmX0465)
重庆市基本科研业务费资助项目(cstc2020jxjl-jbky0015)
重庆市科研机构绩效激励引导专项项目(cstc2020jxjl-X0001)
国家自然科学基金资助项目(51701035)
重庆市自然科学基金资助项目(cstc2019jcyj-bshx0031)。
关键词
镁合金
无熔剂
重熔
ZM5
正交试验
magnesium alloy
non-flux
remelting
ZM5
impurity removal
作者简介
李红成(1982—),男,河北保定人,硕士,主要从事轻合金材料设计与产业化的研究和实践;通讯作者:张娜,E-mail:naxzhang@126.com。
