NDLI: Microscopic phase-field simulation of Cr atom substitution character during formation of Ll$_{2}$ and DO$

Content Provider	Springer Nature Link
Author	Chu, Zhong Chen, Zheng Shi, Yun xia Lu, Yan li Wang, Yong xin
Copyright Year	2008
Abstract	The simulations of Cr atom substitution character during the formation of Ll$_{2}$ and DO$_{22}$ phases in Ni-Cr-Al alloy were performed at 873 K based on microscopic phase-field model. It is found that the substitution of Cr is affected by Cr and Al contents and limits of occupation probabilities of Cr atom in Ll$_{2}$ phase are present. The precipitate is single Ll$_{2}$ phase when the component is less than the limit, Cr atoms substitute the Al sublattices in Ll$_{2}$ phase, and both of atoms Al and Cr occupy the β-sites and complex phases Ni$_{3}$(Al$_{1−x }$Cr$_{ x }$) are formed; Cr atoms enter Ni sites when Al and Cr contents exceed the limit, and substitute β-sites or both of α-and β-sites. The DO$_{22}$ phase is formed at the boundary of Ll$_{2}$ phase.
Starting Page	588
Ending Page	592
Page Count	5
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	15
Issue Number	5
e-ISSN	19930666
Language	English
Publisher	Central South University
Publisher Date	2008-10-10
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	Ni-Cr-Al alloy microscope phase-field precipitation substitution simulation Metallic Materials Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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Microscopic phase-field simulation of Cr atom substitution character during formation of Ll$_{2}$ and DO$_{22}$ phases in Ni-Cr-Al alloy