Strengthening and grain refinement in an Al-6061 metal matrix composite through intense plastic straining

Journal Article · Fri Dec 04 00:00:00 EST 1998 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00398-4· OSTI ID:305418

Valiev, R Z; Islamgaliev, R K; Kuzmina, N F ^[1]; Li, Y; Langdon, T G ^[2]

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1. Ufa State Aviation Technical Univ. (Russian Federation). Inst. of Physics of Advanced Materials
2. Univ. of Southern California, Los Angeles, CA (United States)

Intense plastic straining techniques such as torsion straining and equal channel angular (ECA) pressing are processing procedures which may be used to make beneficial changes in the properties of materials through a substantial refinement in the microstructure. Although intense plastic straining procedures have been used for grain refinement in numerous experiments reported over the last decade, there appears to have been no investigations in which these procedures were used with metal matrix composites. The present paper describes a series of experiments in which torsion straining and ECA pressing were applied to an Al-6061 metal matrix composite reinforced with 10 volume % of Al{sub 2}O{sub 3} particulates. As will be demonstrated, intense plastic straining has the potential for both reducing the grain size of the composite to the submicrometer level and increasing the strength at room temperature by a factor in the range of {approximately}2 to {approximately}3.

• OSTI ID: 305418
• Journal Information: Scripta Materialia, Vol. 40, Issue 1; Other Information: PBD: 4 Dec 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GRAIN REFINEMENT
DEFORMATION
ULTIMATE STRENGTH
ALUMINIUM BASE ALLOYS
ALUMINIUM OXIDES
COMPOSITE MATERIALS
STRAINS
PRESSING