[1]肖 颖,许军锋,坚增运.过冷Al-70%Si合金熔体的凝固体积变化行为研究[J].西安工业大学学报,2020,(01):70-75.[doi:10.16185/j.jxatu.edu.cn.2020.01.010 ]
 XIAO Ying,XU Junfeng,JIAN Zengyun.Solidification Volume Change Behavior of Undercooled Al-70%Si Alloy Melt[J].Journal of Xi'an Technological University,2020,(01):70-75.[doi:10.16185/j.jxatu.edu.cn.2020.01.010 ]
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过冷Al-70%Si合金熔体的凝固体积变化行为研究()
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《西安工业大学学报》[ISSN:1673-9965/CN:61-1458/N]

卷:
期数:
2020年01期
页码:
70-75
栏目:
材料科学与工程
出版日期:
2020-02-15

文章信息/Info

Title:
Solidification Volume Change Behavior of Undercooled Al-70%Si Alloy Melt
文章编号:
1673-9965(2020)01-0070-06
作者:
肖 颖许军锋坚增运
(西安工业大学 陕西省光电功能材料与器件重点实验室/材化与化工学院,西安 710021
Author(s):
XIAO YingXU JunfengJIAN Zengyun
(The Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices,School of Materials and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China)
关键词:
Al-Si合金 凝固收缩率 高速摄影 过冷度 体积变化
Keywords:
AlSi alloy solidification shrinkage rate high speed photography undercooling volume change
分类号:
TG111.4
DOI:
10.16185/j.jxatu.edu.cn.2020.01.010
文献标志码:
A
摘要:
对于合金凝固过程中发生膨胀或收缩的微小体积变化难以测试的问题。文中利用真空电磁悬浮熔炼技术,结合高速摄影和高灵敏测温技术研究Al-70%Si(原子百分比)合金熔体在凝固过程的体积(V)变化,以及凝固过冷度对该合金凝固前后体积变化的影响。研究结果表明:Al-70%Si合金凝固过程的体积变化是膨胀的,并且随着凝固过冷度的增加,体积膨胀率(η)逐渐降低,这与预测结果吻合,由此验证了电磁悬浮熔炼技术测试体积变化的可靠性。
Abstract:
The study is intended to solve the problem that it is difficult to test small changes in volume during the solidification of alloys.In this paper,the vacuum electromagnetic levitation technique is combined with high-speed photography and high-sensitivity temperature measurement technology to study the volume change of Al-70%Si(atomic percentage)alloy melt during its solidification process and the effects of solidification undercooling on the volume change before and after the solidification of Al-70% Si alloy melt.The results show that the volume expansion occurs during the solidification,and that the expansion rate(η)gradually decreases with an increasing in undercooling degree.The results are consistent with the theoretical prediction,which therefore verifies the reliability of the test method of electromagnetic levitation melting.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-07-19
基金资助:国家自然科学基金(51971166; 51671151); 陕西省教育厅重点实验室项目(18JS050); 陕西省科技新星项目(2016KJXX-87)。 第一
作者简介:肖 颖(1995-),女,西安工业大学硕士研究生。 通信作者简介:许军锋(1981-),男,西安工业大学副教授,主要研究方向为合金凝固理论,E-mail:xujunfeng@mail.nwpu.edu.cn。
(编辑 潘秋岑; 校对 张立新)
更新日期/Last Update: 2020-02-15