3D Morphology and Formation Process of the Icosahedral Quasicrystalline Phase in Rapidly Solidified Al-Mn Alloy
来源期刊:Acta Metallurgica Sinica2016年第1期
论文作者:Hui-Jun Kang Zhong-Lue Hu Xiao-Xia Gao Zong-Ning Chen Yi-Ping Lu Jin-Chuan Jie Jing-Jie Guo
文章页码:28 - 31
摘 要:Three-dimensional morphology and formation process of icosahedral quasicrystal phase have been investigated in a melt-spun Al-18 Mn alloy(in wt%).Three distinct layers corresponding to varying temperature gradient have been observed on the cross section of the ribbons.3D morphologies of cellular and dendritic icosahedral phase have been obtained through electro-etching.A model has been proposed to describe the formation process of the icosahedral phase and α-Al during the rapid solidification.The icosahedral phases are primarily precipitated from the melt into fine cellular and dendritic particles,and subsequently engulfed by the α-Al which propagates in a planar morphology.
Hui-Jun Kang1,Zhong-Lue Hu2,Xiao-Xia Gao1,Zong-Ning Chen1,Yi-Ping Lu1,Jin-Chuan Jie1,Jing-Jie Guo3
1. Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology2. Department of Mechanical Engineering,Texas Tech University3. School of Materials Science and Engineering,Harbin Institute of Technology
摘 要:Three-dimensional morphology and formation process of icosahedral quasicrystal phase have been investigated in a melt-spun Al-18 Mn alloy(in wt%).Three distinct layers corresponding to varying temperature gradient have been observed on the cross section of the ribbons.3D morphologies of cellular and dendritic icosahedral phase have been obtained through electro-etching.A model has been proposed to describe the formation process of the icosahedral phase and α-Al during the rapid solidification.The icosahedral phases are primarily precipitated from the melt into fine cellular and dendritic particles,and subsequently engulfed by the α-Al which propagates in a planar morphology.
关键词: