Flow Behavior of Al Matrix Composite Reinforced by Iron Based (20% Cr-30%Ni) Wires during Equal Channel Angular Pressing |
Paper ID : 1336-UFGNSM-FULL |
Authors: |
Abstract: |
Abstract Equal channel angular pressing (ECAP) is currently being investigated because of its potential to produce ultra-fine grained microstructures in metallic alloys with potential of industrial implementation. In addition, recently particles reinforced composites have been the subject of ECAP processing to study mechanical behavior. Flow behavior of material during plastic deformation including strain distribution and inhomogeneity are complicate and affected by the relationships between intrinsic material properties and processing factors like die geometry. Several ways have been employed for flow pattern characterization such as image analysis, hardness tests, physical modeling and simulation. This work is a novel research to study deformation features of Al matrix composite by ECAP processing, reinforced by longitudinal iron based (20% Cr-30%Ni) fibers. In addition, the composite provides a very good opportunity to characterize flow pattern of ECAP in route A. Although the macrostructural flow pattern of the deformed composite and CP Al show similarity, their microstructural flow patterns are difference. As a result of interaction of the matrix with the fibers during deformation, materials perturbation was appeared in the microstructure along with the some areas including intensive shear bands adjacent to the fibers. Therefore, the presence of high strengths fibers in the Al matrix not only improve homogeneity of the strain throughout the specimen even in the dead zone, but also promote higher grain refinement within the matrix and which seems to enhance mechanical properties. |
Keywords: |
Keywords: Al-wire composite; ECAP; flow behavior; ultra fine structure |
Status : Paper Accepted (Poster Presentation) |