Different elements-induced destabilisation of TiC and its application on the grain refinement of Mg-Al alloys

被引：24

作者：

Ding, Haimin ^{[1
]}

Li, Hui ^{[1
]}

Liu, Xiangfa ^{[1
]}

机构：

[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 485卷 / 1-2期

关键词：

Metals; Casting; Grain refinement; Destabilisation; REFINING MECHANISM; MAGNESIUM ALLOYS; CARBON ADDITION; EFFICIENCY;

D O I：

10.1016/j.jallcom.2009.06.091

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The destabilisation of TiC and its application on the grain refinement of Mg-Al alloys is studied by the experiment and CASTEP calculation Al4C3-containing refiners for Mg-Al based alloys are easily prepared in the liquid Al-Ti-C-Si alloy. but the TiAlxSiy formed simultaneously will poison the refining efficiency of Al4C3 In contrast to Si. B element can improve the stabilization of TiC in the Al melt: however, the addition of B is essential in Al4C3-containing refiners prepared by the destabilisation of TiC in order to transfer the Ti into TiB2 particles In this case. the poisoning effect of Ti can be avoided and the formed Al4C3 can be fully worked as the substrates for alpha-Mg. (C) 2009 Elsevier B.V. All rights reserved

引用

页码：285 / 289

页数：5

共 23 条

[1] Mechanism for grain refinement of magnesium alloys by superheating [J].