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Indexed by:Journal Papers

Date of Publication:2019-11-15

Journal:MATERIALS & DESIGN

Included Journals:EI、SCIE

Volume:182

ISSN No.:0264-1275

Key Words:Al-matrix composites; Woven carbon fibers; Semi-solid rolling; Mechanical property; Fracture surface

Abstract:Electroless nickel coated woven carbon fibers were used as reinforcements for the fabrication of Al-matrix composites by Semi-solid Rolling method. Due to the appropriate fiber immersion conditions (800 degrees C for 30 s), the reasonable back-sheet temperature (600 degrees C) and the correct covering-layer state (semi-solid), the matrix could infiltrate into the woven interspace sufficiently and attach to the fibers closely forming a smooth interface. The Al-5%Cu alloy was used as the matrix to investigate the infiltration mechanism by tracing the alloy-element distribution. It implied that the liquid part of the semi-solid matrix was the main filler, while the solid part just worked on the adjustment of matrix flowability to improve the infiltration result. The incorporation of woven carbon fibers provided a significant improvement in the material strength for more than 52%, and the composites could get a 2-dimensional strengthening effect to resist the deformation in multiple directions. (C) 2019 The Authors. Published by Elsevier Ltd.