返回
Phase selection in hypercooled alloys
DOI:10.1016/j.jallcom.2020.154439.png)
摘要
En 中文
The effect of the hypercooling limit on the crystal growth velocity v as a function of the undercooling temperature Delta T for intermetallic binary and ternary alloys remains unexplained yet. In combination with the electrostatic levitation technique, we performed in-situ high energy synchrotron X-ray diffraction measurements at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, to investigate the phase formation of the binary alloy NiTi, the Zr-based ternary alloys (NixCu1-x)Zr (x = 0.3, 0.4) and the Ni-based ternary alloy Ni(Zr0.5Ti0.5) for solidification events at undercooling temperatures Delta T < Delta T-hyp and Delta T> Delta T-hyp, whereas Delta T-hyp are the corresponding hypercooling limits of the systems. Our results indicate that the cubic B2-type (CsCl-type, space group Pm3 m #221) phase is always the primary solidifying phase for all investigated alloys. This holds for all undercoolings obtained. Thus, the deceleration effect observed in the crystal growth velocity for all investigated alloys at their hypercooling limits seems to be caused by something different than the formation of different phases. (C) 2020 Published by Elsevier B.V.
Keyword:
Phase selection
Hypercooling
Crystal growth
Intermetallic alloys
Electrostatic levitation
Synchrotron X-ray diffraction
AI总结
对已上传原文的论文进行重点信息的提取,主要内容包括:简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
6.3
论文数:
8.4W
被引数:
24.3W
机构
引用论文
Neutron scattering experiments on liquid droplets using electrostatic levitation
PHYSICAL REVIEW B
IF3.7

