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Indexed by:Journal Papers

Date of Publication:2020-07-01

Journal:JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

Included Journals:EI、SCIE

Volume:281

ISSN No.:0924-0136

Key Words:Carbon fibers; Al-matrix composite; Re-rolling process; Collaborative deformation; Alloy elements

Abstract:A re-rolling method was successfully developed to add more layer of carbon fibers into the composite plate that already contained one layer fibers. The thickness and state of covering-layer were synchronously controlled to achieve a subtle equilibrium between the solidification and deformation behaviors. It could offer sufficient infiltration effects on the upper fibers and protection effects on the lower fibers at the same time. Due to the ideal micro-structure of both layers fibers, the maximum bending stress value of the composite could reach 139.8 MPa, an improvement of 42 % than the corresponding matrix, and 16 % than the composite with one layer fibers. The distribution characteristics of alloying elements were systematically investigated, and the elements with the tendency to aggregating in the last solidification part that proved to be more prone to locate in the fiber region. The mixing enthalpy theory was introduced to explain the distribution of coating elements in the composite.