In situ small angle X-ray scattering investigation of ultrasound induced nucleation in a metallic alloy melt

被引：45
作者：
Huang, Haijun [1 ]
Shu, Da [1 ]
Zeng, Jianrong [2 ]
Bian, Fenggang [2 ]
Fu, Yanan [2 ]
Wang, Jun [1 ,3 ]
Sun, Baode [1 ,3 ]
机构：
[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai 200240, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
[3] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
来源：
SCRIPTA MATERIALIA | 2015年 / 106卷
基金：
美国国家科学基金会;
关键词：
Nucleation; SAXS; Ultrasonic; Cavitation; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; AL-CU; ALUMINUM; GROWTH; SAXS; ICE; NANOPARTICLES; LIQUID;
D O I：
10.1016/j.scriptamat.2015.04.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An in situ synchrotron small angle X-ray scattering (SAXS) method was employed to probe the change of scattering structures in an Al-Cu alloy melt after ultrasonic melt treatment. The size distribution and fractal geometry of the scatterers were evaluated by quantitative SAXS analysis. Results show that cavitation induced nuclei on the clusters or impurities, and the remnants, showing bigger sizes and lower surface fractal dimensions in a melt of lower superheating, could preserve grain refining potential for at least 20 min. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：21 / 25
页数：5
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