In-situ P/M Al/(ZrB2+Al2O3) MMCs:: Processing, microstructure and mechanical characterization

被引：69

作者：

Feng, CF ^{[1
]}

Froyen, L ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Louvain, Belgium

来源：

ACTA MATERIALIA | 1999年 / 47卷 / 18期

关键词：

in-situ processing; composites; microstructure; mechanical properties;

D O I：

10.1016/S1359-6454(99)00326-2

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

In-situ metal matrix composites (MMCs) offer significant advantages over conventional MMCs from both a technical and an economic standpoint. In this paper, an in-situ MMC, i.e. Al/(10 vol.% ZrB2+9.2 vol.% Al2O3), is produced starting from Al + ZrO2 + B by reactive sintering and subsequently densified by hot-pressing. The formation mechanism of ZrB2 and Al2O3 in Al matrix is studied by XRD, thermal analysis and microstructural characterization. Reaction kinetics are also investigated based on the results of the reaction mechanism. The properties are evaluated in terms of microstructural characterization, Young's modulus and bending tests. The in-situ processing involves four intermediate steps and the transitional phases are AlB2, Zr(O, B)(2) and (Zr, Al)(B, O)(2) Regarding the reaction kinetics, conversion fraction vs time relationships have been established for the last three intermediate steps. (C) 1999 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：4571 / 4583

页数：13

共 25 条

[1]

AIKIN RM, 1997, JOM, V35

[2]

In-situ formation of TiB2 in a P/M aluminum matrix [J].

Brinkman, HJ ;

Duszczyk, J ;

Katgerman, L .

SCRIPTA MATERIALIA, 1997, 37 (03) :293-297

[3]

CHU MG, 1993, METALL TRANS A, V24, P2803, DOI 10.1007/BF02666284

[4]

In-situ synthesis of Al2O3 and TiB2 particulate mixture reinforced aluminium matrix composites [J].

Feng, CF ;

Froyen, L .

SCRIPTA MATERIALIA, 1997, 36 (04) :467-473

[5]

FENG CF, IN PRESS J MAT SCI

[6]

FENG CF, IN PRSS ATB METALL

[7]

FENG CF, 1998, THESIS KATHOLIEKE U

[8]

GEIGER AL, 1991, JOM, V8

[9]

Gere J. M., 1997, MECH MAT

[10]

FABRICATION OF AL MATRIX IN-SITU COMPOSITES VIA SELF-PROPAGATING SYNTHESIS [J].

GOTMAN, I ;

KOCZAK, MJ ;

SHTESSEL, E .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1994, 187 (02) :189-199

← 1 2 3 →