Dynamic densification of metal matrix-coated fibre composites: modelling and processing

被引：15
作者：
Peng, H
Dunne, FPE
Grant, PS
Cantor, B
机构：
[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England
[2] Univ Oxford, Dept Mat, OCAMAC, Oxford OX1 3PJ, England
来源：
ACTA MATERIALIA | 2005年 / 53卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
single fibre tests; matrix-coated fibres; vacuum hot pressing; dynamic densification; titanium matrix composites;
D O I：
10.1016/j.actamat.2004.10.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The consolidation processing of Ti-6Al-4V matrix-coated fibre (MCF) composite under vacuum hot pressing (VHP) has been investigated. A new test methodology has been developed for the determination of in situ matrix coating creep properties. In using the methodology, only a single, simple test is required, to-ether with finite element modelling of the single fibre compression test. The creep coefficient and stress index have been determined for electron beam evaporated physical vapour deposited Ti-6Al-4V 900 degreesC to be 1.23 x 10(-5) and 1.3, respectively. Consolidation experiments have been carried out on multiply MCF arrays under vacuum hot pressing. Finite element models have been developed for the dynamic consolidation of both square and hexagonal fibre packings. The creep constants for the Ti-6Al-4V, determined using the single fibre test. were assigned to the coating in the finite element models. Excellent agreement between predicted and experimental results was achieved, providing, verification of the single fibre test methodology for the determination of creep constants. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：617 / 628
页数：12
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