High temperature deformation behavior in a 2124Al/15vol%SiC[sub w] composite

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90516-U· OSTI ID:6307623

Kim, Jae Hong; Lee, Dong Nyung ^[1]; Oh, Kyu Hwan ^[2]

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1. Seoul National Univ., Seoul (Korea, Republic of)
2. Korea Inst. of Science and Technology, Seoul (Korea, Republic of)

One of the interesting properties of Al/SiC composites is a superplastic-like behavior or an extended ductility in a two-phase (solid + liquid) region. Mahoney and Ghosh reported that a 7475Al/SiC[sub p] (subscript p represent particulate) could be superplastically deformed up to 450% at 500[degree]C. The matrix itself was a superplastic material, which made it possible for the composite to be superplastically deformed. Wu and Sherby reported a superplasticity in 2024Al/SiC[sub w](subscript w represents whisker) under a thermal cycling condition, which was attributed to internal stresses. The above superplastic behaviors were obtained at very slow strain rates. On the other hand, Chokshi et al. reported that elongation of a 2124Al/SiC[sub w] increased with increasing strain rate up to 10[sup [minus]1]sec[sup [minus]1] at 475[degree]C. Nieh et al. reported an unusual superplasticity, more precisely, superplastic-like behavior that had not been discovered with earlier experimental results. The objectives of this work is to obtain an optimum condition for hot working of a 2124Al/15%SiC[sub w] and to suggest a model which can qualitatively explain the extended ductility in the two-phase(solid and liquid phases) region.

• OSTI ID: 6307623
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:3; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
DATA
DEFORMATION
DUCTILITY
EXPERIMENTAL DATA
FABRICATION
HOT WORKING
INFORMATION
MATERIALS
MATERIALS WORKING
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NUMERICAL DATA
SILICON CARBIDES
SILICON COMPOUNDS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TENSILE PROPERTIES