铸造技术2013，Vol.34Issue(6)：680-682,3.
碳化铪对铸造Mg-3％Al镁合金晶粒度的影响
Effect of Hafnium Carbide on Grain Refinement of Mg-3％Al Alloy
杨显志1
作者信息
- 1. 中油辽河油田公司钻采工艺研究院,辽宁盘锦115010
- 折叠
摘要
Abstract
The effects of different amounts of hafnium carbide (HfC) powder on the grain refinement of Mg-3 wt.％Al alloys were investigated.The results show,even though HfC and Mg have a similar crystallography,HfC powder has not a very effective refining effect on pure magnesium with typical columnar grains.However,Mg-3％ Al alloy can be successfully refined by the addition of HfC due to the in-situ formation of Al4C3.Adding 0.7％ HfC into Mg-3％Al alloy leads to the smallest grain size,and its average grain size is refined from 365 μm to 145 μm.The formation of Al4C3 is the main mechanism of grain refinement of Mg-3％Al alloy by addition of HfC.关键词
镁合金/晶粒细化/异质形核/碳化铪/铸造Key words
magnesium alloys/ grain refinement/ heterogeneous nucleation/ hafnium carbide/ casting分类
矿业与冶金引用本文复制引用
杨显志..碳化铪对铸造Mg-3％Al镁合金晶粒度的影响[J].铸造技术,2013,34(6):680-682,3.
