Behavior of CeO2 additive in in-situ TiB2 particles reinforced 2014 Al alloy composite

被引：19

作者：

Xue Jing ^{[1
]}

Wang Jun ^{[1
]}

Han Yan-feng ^{[1
]}

Chen Chong ^{[1
]}

Sun Bao-de ^{[1
]}

机构：

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

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 05期

关键词：

2014 Al alloy; TiB2; composites; CeO2; WEAR BEHAVIOR; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; ALUMINUM; MICROSTRUCTURE; CAST;

D O I：

10.1016/S1003-6326(11)61277-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In-situ TiB2 particles reinforced 2014 aluminum alloy composite was prepared using an exothermic reaction process with K2TiF6 and KBF4 salts. The effects of CeO2 additive on the microstructure and properties of in-situ TiB2/2014 composite were investigated. The results showed that CeO2 at high temperature exhibits the same function as Ce. When 0.5% ( mass fraction) CeO2 additive was added, the dispersion of TiB2 particles in the matrix is improved significantly, and particles have no obvious settlement. The dispersing mechanism of TiB2 particles in 2014 Al alloy matrix was explained. Compared with the composite without CeO2, the hardness, tensile strength, yield strength and elongation of the composite with CeO2 addition are greatly increased in as-cast condition.

引用

页码：1012 / 1017

页数：6

共 25 条

[1] Wear behavior of Al-12Si/TiB2 coatings produced by laser cladding [J].

Anandkumar, R. ;

Almeida, A. ;

Vilar, R. .

SURFACE & COATINGS TECHNOLOGY, 2011, 205 (13-14) :3824-3832

[2]

Davies P., 1992, KEY ENG MATER, V77-78, P357, DOI 10.4028/www.scientific.net/KEM.77-78.357

[3] Microstructures of in situ Al/TiB2 MMCs prepared by a casting route [J].

Feng, CF ;

Froyen, L .

JOURNAL OF MATERIALS SCIENCE, 2000, 35 (04) :837-850

[4] On the precipitation of TiB2 in aluminum melts from the reaction with KBF4 and K2TiF6 [J].

Fjellstedt, J ;

Jarfors, AEW .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 413 :527-532

[5] Influence of high-intensity ultrasound on grain refining performance of Al-5Ti-1B master alloy on aluminium [J].

Han, YF ;

Li, K ;

Wang, J ;

Shu, D ;

Sun, BD .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 405 (1-2) :306-312

[6] Wear behaviour of cast and mushy state rolled Al-4.5Cu alloy and in-situ Al4.5Cu-5TiB2 composite [J].

Herbert, Mervin A. ;

Maiti, R. ;

Mitra, R. ;

Chakraborty, M. .

WEAR, 2008, 265 (11-12) :1606-1618

[7] The dispersion mechanism of TiB2 ceramic phase in molten aluminium and its alloys [J].

Jha, A ;

Dometakis, C .

MATERIALS & DESIGN, 1997, 18 (4-6) :297-301

[8] Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminium alloy composites [J].

Kok, M .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 161 (03) :381-387

[9] The influence of room temperature and cryogenic temperature rolling on the aging and wear behaviour of Al-4Cu-5TiB2 in situ composites [J].

Kumar, S. ;

Sarma, V. Subramanya ;

Murty, B. S. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 479 (1-2) :268-273

[10]

Lakshmi S, 1998, J MATER PROCESS TECH, V73, P160, DOI [10.1016/S0924-0136(97)00225-2, 10.1163/156855197X00157]

← 1 2 3 →