High temperature deformation behavior of 20 vol. % SiC[sub w]/2024Al metal matrix composite

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90378-6· OSTI ID:5429687

Kim, H Y; Hong, S H ^[1]

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1. Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Material Science and Engineering

The SiC whisker reinforced aluminum matrix composites are attractive materials for aerospace or automotive structural components due to high specific strength and high specific modulus with good thermal stability. However, the SiC whisker reinforced composites generally have the major drawback of poor formability because of low ductility and poor fracture toughness in comparison with matrix alloys. Therefore, the enhancement of ductility in metal matrix composites remains as a major obstacle to the expansion of the industrial application. In this paper, the high temperature deformation behavior of a 20 vol. % SiC[sub w]/2024Al composite, fabricated by the vacuum hot pressing process, has been investigated. The tensile deformation behavior of the SiC[sub w]/2024Al composite was observed at temperatures ranging from 475--575 C with initial strain rates ranging from 10[sup [minus]3]--1.7s[sup 1]. The effect of extrusion on high temperature deformation behavior was investigated. The microstructural parameters, such as the orientation and aspect ratio of SiC whiskers and the grain size of the 2024Al matrix, are related with the high temperature deformation behavior of SiC[sup w]/2024Al composites.

• OSTI ID: 5429687
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 30:3; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
DEFORMATION
MATERIALS
SILICON CARBIDES
SILICON COMPOUNDS
TEMPERATURE DEPENDENCE