Refinement of TiB2 in Al-Ti-B Grain Refiner Alloys by Ultrasound and the Effect on Al Grain Size

被引：3

作者：

Shu, Da ^{[1
,2
]}

Sun, Baode ^{[1
]}

Mi, J. ^{[2
]}

Grant, P. S. ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

来源：

PRICM 7, PTS 1-3 | 2010年 / 654-656卷

基金：

中国国家自然科学基金; 英国工程与自然科学研究理事会;

关键词：

Al alloy; grain refinement; intense ultrasound; free growth model; ALUMINUM; MELTS;

D O I：

10.4028/www.scientific.net/MSF.654-656.958

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-intensity ultrasound was applied during the preparation of an Al-5Ti-1B master alloy when reacting fluoride salts with molten Al. The reaction rate was significantly increased with TiB2 particles of much reduced mean diameter and narrow width spread produced in similar to 4 minutes. The improved grain refining performance of the TiB2 in a commercial purity Al was studied and modelled using free growth model. The increased number and reduced size of TiB2 particles provided an enhanced grain refining capability.

引用

页码：958 / +

页数：2

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