A comparative study of cavitation characteristics in Si[sub 3]N[sub 4p]/Al-Mg-Si composite and 7475 aluminum alloy

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90279-8· OSTI ID:7174478

Iwasaki, H; Takeuchi, M; Mori, T ^[1]; Mabuchi, M ^[2]; Higashi, K ^[3]

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1. Himeji Inst. of Technology, Hyogo (Japan). Dept. of Materials Science and Engineering
2. National Industrial Research Inst. of Nagoya (Japan)
3. Univ. of Osaka Prefecture (Japan). Dept. of Mechanical Systems Engineering

Recently, it has been demonstrated that many aluminum matrix composites with discontinuous SiC or Si[sub 3]N[sub 4] show superplastic behavior. In particular, it should be noted that some aluminum matrix composites show superplasticity at high strain rates (> 10[sup [minus]2] s[sup [minus]1]). It is well established that cavitation occurs during superplastic flow in a wide number of metallic materials. However, the cavitation behavior in superplastic metal matrix composites is not well understood. It is important to investigate characteristics of cavitation in metal matrix composites for superplastic forming applications. In this investigation, cavitation in a 20 vol% Si[sub 3]N[sub 4p]/Al-Mg-Si composite, which exhibits superplasticity at high strain rates, has been investigated and the data of the composite have been compared with those of the superplastic 7475 alloy which is a typical superplastic aluminum alloy.

• OSTI ID: 7174478
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:3; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CAVITATION
COMPOSITE MATERIALS
DATA
EXPERIMENTAL DATA
FABRICATION
INFORMATION
MAGNESIUM ALLOYS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
PLASTICITY
PNICTIDES
SILICON ALLOYS
SILICON COMPOUNDS
SILICON NITRIDES