Atomic structure transition for various solidification paths of Pd40Ni40P20 at different cooling rates

被引：5

作者：

Yu, Pengfei ^{[1
]}

Xia, Mingxu ^{[1
]}

Han, Xiujun ^{[2
]}

Cao, Saichao ^{[1
]}

Zhao, Yimeng ^{[1
]}

Zeng, Long ^{[1
]}

Li, Jianguo ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[2] Qilu Univ Technol, Sch Mat Sci & Engn, Jinan 250000, Peoples R China

来源：

SCRIPTA MATERIALIA | 2022年 / 219卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Melt structure; Solidification path; Cooling rate; Liquid-liquid phase transition; BOND-ORIENTATIONAL ORDER; METALLIC-GLASS; ALLOY; CRYSTALLIZATION; NUCLEATION; LIQUIDS;

D O I：

10.1016/j.scriptamat.2022.114891

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Demonstrating the cooling rate effect on the solidification path is a massive challenge. In this paper, the atomic structure of the Pd40Ni40P20 melt was statistically "snapped " at different temperatures with two different cooling rates. The structure evolution was analyzed with in situ high-energy X-ray diffraction method and Reverse Monte Carlo simulation. It indicates that the presence of Liquid-Liquid Phase Transition (LLPT) makes the melt more inclined to form crystal but the higher cooling rate leads to an insufficient transition retaining more icosahedrallike clusters. This work provides dynamic guidance for understanding the competition between crystallization and vitrification.

引用

页数：6

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