MECHANISMS OF GRAIN SIZE EVOLUTION DURING ALUMINUM SPRAY FORMING

机译：铝喷雾形成过程中晶粒尺寸演变的机理

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A numerical approach is implemented to analyze the evolution of grain size during spray forming of 5083 Al. The evolution of grain size is investigated at two different thicknesses corresponding to 400 and 602℃ on the deposited material's surface. Nucleation behavior and nuclei growth in individual droplets are numerically computed during the flight and deposition stages. Based on the measured temperature history, nuclei coarsening during slow solidification of remaining liquid phase (applicable to the deposited material's surface corresponding to a surface temperature of 602℃) and grain growth during solid-state cooling are analyzed in detail. The calculated results indicate a bimodal and a relatively uniform grain morphology corresponding to the deposited material's surfaces with 400 and 602℃, respectively.

机译：采用数值方法来分析5083 Al喷射成形过程中晶粒尺寸的变化。研究了两种不同厚度的晶粒尺寸的演变，分别对应于沉积材料表面上的400和602℃。在飞行和沉积阶段，通过数值计算单个液滴的成核行为和核生长。根据测得的温度历史，详细分析了剩余液相（适用于沉积材料的表面，对应于602℃的表面温度）缓慢凝固过程中的晶核粗化和固态冷却过程中的晶粒长大。计算结果表明，双峰和相对均匀的晶粒形貌分别对应于沉积材料的表面，温度分别为400和602℃。

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来源
《TMS(The Minerals, Metals amp; Materials Society) Annual Meeting and Symposium on Solidification of Aluminum Alloys; 20040314-20040318; Charlotte,NC; US》|2004年|P.331-340|共10页
会议地点 Charlottee NC(US);Charlottee NC(US)
作者
Yaojun Lin; Yizhang Zhou; Enrique J. Lavernia;
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作者单位

Department of Chemical Engineering and Materials Science University of California, Davis, CA 95616-5294, USA;

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原文格式 PDF
正文语种 eng
中图分类合金学与各种性质合金;
关键词
spray forming; aluminum alloy; solidification; nucleation; growth; grain size;

机译：喷射成形；铝合金；凝固；成核；生长；晶粒尺寸;

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1. Mechanisms of Grain Size Evolution during Aluminum Spray Forming [J] . Yaojun Lin, Yizhang Zhou, Enrique J. Lavernia Metallurgical and Materials Transactions B . 2008,第6期

机译：铝喷射成形过程中晶粒尺寸演变的机理
2. Evolution of the Microstructure and Mechanisms of Formation of New Grains upon Severe Plastic Deformation of the 2219 Aluminum Alloy [J] . O. Sh. Sitdikov, R. O. Kaybyshev, I. M. Safarov The Physics of Metals and Metallography . 2001,第3期

机译：2219铝合金严重塑性变形后新晶粒组织和形成机理的演变
3. Microstructural evolution and grain subdivision mechanisms during severe plastic deformation of aluminum particles by ball milling [J] . Razavi-Tousi S. S., Szpunar J. A. Philosophical magazine: structure and properties of condensed matter . 2015,第13a15期

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4. Mechanisms of Grain Size Evolution During Aluminum Spray Forming [C] . Yaojun Lin, Yizhang Zhou, Enrique J. Lavernia TMS Annual Meeting . 2004

机译：铝喷雾成形过程中晶粒尺寸演化的机制
5. Interaction mechanisms between ceramic particulates and metallic matrices, and mechanical behavior of aluminum-silicon-X(X = silicon carbide, titanium diboride) MMCs synthesized using spray atomization, co-injection and deposition. [D] . Wu, Yue. 1994

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6. Comparison of Hot Deformation Behavior Characteristics Between As-Cast and Extruded Al-Zn-Mg-Cu (7075) Aluminum Alloys with a Similar Grain Size [O] . H.T. Jeong, W.J. Kim 2019

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MECHANISMS OF GRAIN SIZE EVOLUTION DURING ALUMINUM SPRAY FORMING

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