MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
In Situ Synthesis and Compressive Deformation Behaviors of TiC Reinforced Magnesium Matrix Composites
Wei CaoCongfa ZhangTongxiang FanDi Zhang
Author information
JOURNALS FREE ACCESS

2008 Volume 49 Issue 11 Pages 2686-2691

Details
Abstract

TiC reinforced magnesium matrix composites (Mg-MMCs) were successfully synthesized by spontaneously infiltrating the molten magnesium into Ti-C preforms, simultaneously in situ forming TiC particles in the liquid of magnesium alloy. The compressive deformation behaviors of TiC reinforced Mg-MMCs were further investigated by means of uniaxial compression tests at strain rates between 10−3 s−1 and 1 s−1 and temperature between room temperature and 200°C. Early fracture was observed in the low-temperature/high strain rate regime, fracture occurring by crack propagation at 45 degree with respect to the compression axis. In high-temperature/low strain rate regime, the flow curves exhibited the typical flow softening shape. The results show that with the addition of TiC particles Mg-MMCs can effectively improve compressive properties of magnesium matrix at testing temperature interval. When compared to the unreinforced counterpart, TiC reinforced Mg-MMCs need higher temperature and lower strain rate to avoid premature fracture.

Information related to the author
© 2008 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top