The mechanical properties of Al2O3/aluminum alloy A356 composite manufactured by squeeze casting

被引：49

作者：

Chou, Shang-Nan

Huang, Jow-Lay ^{[1
]}

Lii, Ding-Fwu

Lu, Horng-Hwa

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 701, Taiwan

[2] Cheng Shiu Inst Technol, Dept Elect Engn, Kaohsiung 833, Taiwan

[3] Natl Chin Yi Inst Technol, Dept Mech Engn, Taichung 411, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 419卷 / 1-2期

关键词：

Al2O3/A356; composites; squeeze casting; infiltration; four-point bending strength; hardness; toughness; ALUMINUM; INFILTRATION; FABRICATION; AL2O3;

D O I：

10.1016/j.jallcom.2005.10.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Porous aluminum oxide (Al2O3) preforms were formed by sintering in air at 1200 degrees C for 2 h. The A356 aluminum alloy was infiltrated into the preforms in order to fabricate Al2O3/A356 composites with different volume content of A356 by squeeze casting. The volume contents of A356 alloy in Al2O3/A356 composites were 5-40 vol.%. For the corresponding composites, the four-point bending strength of the composites changed from 397 to 443 MPa, the hardness decreased from 1109 to 227 HV and the fracture toughness increased from 4.97 to 11.35 MPa m(1/2). One can fine three toughening mechanisms, crack bridging, crack deflection and crack branching in the composites on SEM micrograph. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：98 / 102

页数：5

共 19 条

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