Development of Al-Ti-C grain refiners and study of their grain refining efficiency on Al and Al-7Si alloy

被引：132

作者：

Kumar, GSV

Murty, BS ^{[1
]}

Chakraborty, M

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India

[2] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 396卷 / 1-2期

关键词：

castings; scanning electron microscopy; X-ray diffraction; Al-Ti-C;

D O I：

10.1016/j.jallcom.2004.12.039

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：

Al-5Ti-0.8C and Al-5Ti-1.2C master alloys have been successfully prepared by reaction of K2TiF6 salt and graphite powder with molten Al. While the Al-5Ti-0.8C consists of some TiAl3 particles in addition to TiC particles in the Al matrix, the Al-5Ti-1.2C master alloy revealed the presence of only TiC particles. The grain refining efficiency of these two master alloys has been compared with that of the conventional Al-5Ti-1B master alloy on Al and Al-7Si alloy at different addition levels. Al-5Ti-1.2C master alloy was found to be the most efficient grain refiner for Al amongst the grain refiners studied. Even in case of Al-7Si alloy, the Al-5Ti-0.8C and Al-5Ti-1.2C master alloys performed better than conventional Al-5Ti-1B master alloy. However, the Al-5Ti-1.2C master alloy shows poor response to grain refinement in Al-7Si alloy at higher addition levels than the Al-5Ti-0.8C master alloy, indicating poisoning. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：143 / 150

页数：8

共 21 条

[1] DEVELOPMENT OF AL-TI-C GRAIN REFINERS CONTAINING TIC [J].

BANERJI, A ;

REIF, W .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (12) :2127-2137

[2] ON IDENTIFICATION OF THE NUCLEANT IN COMMERCIALLY PURE ALUMINUM CASTINGS INOCULATED WITH LESS-THAN-0.15 PCT TITANIUM [J].

BANERJI, A ;

FENG, QL ;

REIF, W .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1989, 20 (03) :564-566

[3] GRAIN-REFINEMENT OF ALUMINUM BY TIC [J].

BANERJI, A ;

REIF, W .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (11) :2065-2068

[4]

CIBULA A, 1949, J I MET, V76, P321

[5]

Cisse J., 1972, Journal of Crystal Growth, V13-14, P777, DOI 10.1016/0022-0248(72)90558-1

[6]

FINE ME, 1994, Z METALLKD, V84, P282

[7] Peritecticlike precipitation of titanium carbide in Al-Ti-C melts at 1373 K [J].

Jarfors, AEW .

MATERIALS SCIENCE AND TECHNOLOGY, 1999, 15 (05) :481-494

[8] Reaction in Al-TiC metal matrix composites [J].

Kennedy, AR ;

Weston, DP ;

Jones, MI .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 316 (1-2) :32-38

[9] Preparation of Al-TiC composites by self-propagating high-temperature synthesis [J].

Li, PJ ;

Kandalova, EG ;

Nikitin, VI ;

Makarenko, AG ;

Luts, AR ;

Zhang, ZF .

SCRIPTA MATERIALIA, 2003, 49 (07) :699-703

[10] The thermal stability of TiC particles in an Al7wt.%Si alloy [J].

López, VH ;

Scoles, A ;

Kennedy, AR .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :316-325

← 1 2 3 →