Formation of Small Blocky Al3Ti Particles via Direct Reaction Between Solid Ti Powders and Liquid Al

被引：20

作者：

Liu, Z. W. ^{[1
]}

Han, Q. ^{[2
]}

Li, J. G. ^{[1
]}

机构：

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

[2] Purdue Univ, Dept Mech Engn Technol, W Lafayette, IN 47906 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2012年 / 43A卷 / 12期

基金：

美国能源部;

关键词：

METAL-INDUCED EMBRITTLEMENT; CRACK-PROPAGATION; ALUMINUM; DIFFUSION;

D O I：

10.1007/s11661-012-1326-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The evolution of titanium powders in the pure aluminum melt at a lower temperature was studied in our research. The process involved some titanium powders being added into the pure aluminum melt at 1003 K (730 A degrees C), and then the melt was cast into an ingot after 5 minutes. A reaction layer composed of some loose Al3Ti particles was formed on the solid Ti surface due to the reactive diffusion between titanium and aluminum. In-situ blocky Al3Ti particles smaller than 5 mu m were produced in the aluminum matrix. A reaction-peeling model was suggested to illustrate the formation mechanism of Al3Ti particles, and a simple approach for fabricating in-situ Al3Ti/Al-alloy composites was proposed as well.

引用

页码：4460 / 4463

页数：4

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