Abstract
In this article, the powder metallurgy technique combined with flat hot‐extrusion and cold rolling processes was employed to fabricate 10 and 20vol.%Nb/Al metal–metal composite sheets. The hot‐extruded and coldrolled textures of the matrix aluminum in these metal–metal composite sheets were investigated by three dimensional orientation distribution functions (ODFs) analysis. The results show that the extrusion mode and large second phase particulate metal, Nb, have strong influence on the development of the extrusion and cold rolling textures in composites’ matrix. The matrix Al forms β‐fiber textures after flat hot extrusion, where the components consist of B′‐{011} ‹322›, S′‐{124} ‹654› and C′‐{113}h332i. After cold rolling process, only B′‐{011} ‹322› changed to B‐{011} ‹211› while the other components remained the same. The large particles in composites affect the matrix deformation in such a way that separates the distorted or bound zones from the deformation zones, which resulted in the final cold rolling deformation textures.
Highlights
The metal–matrix composites (MMCs) are usually referred to as the metals reinforced by another component
The extrusion texture can be described by superposition of orientations, whose orientation distribution functions (ODFs) in the Euler space are depicted by the texture ‘‘ 0-tube’’ similar to the cold rolling textures in fcc metals
For the present flat-extruded composite specimen, this texture tube -fiber contains the components of B0-{011}h322i, S0-{124}h654i, and C0-{113}h332i, which is totally different from the typically extruded axial fiber textures in fcc metals resulted from axisymmetric extrusion deformation and similar to the result for flat extruded aluminum alloy reported by Inoue (2002)
Summary
The metal–matrix composites (MMCs) are usually referred to as the metals reinforced by another component. The starting material of the DMMC is usually a billet that has been prepared by casting or powder metallurgy (PM) technique and the subsequent large plastic deformation processing techniques, e.g. extrusion, swaging, drawing or rolling, could be exerted to obtain the final metal–metal composite products.
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