TiC颗粒增强钛基复合材料的高温变形行为-中国有色金属学报.PDF

20 1 2010 10 Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010 1004-0609(2010)S1-s0193-05 TiC 1 1 2 1 1 2 (1. 410083 2. 510650) Gleeble−1500 TiC −3~1 s−1 XRDDSCSEMOM 700~950 50 10 TiC TG146.2 A Hot deformation behavior of titanium based matrix composites reinforced by TiC particulates 1 1 2 1 1 2 HU Jia-rui , XIAO Lai-rong , LUO Kai , LIU Yan , LI Wei , CAI Yi-xiang (1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510600, China) Abstract: The deformation behavior of in-situ synthesized titanium matrix composites reinforced by TiC particulates were investigated by compression tests on Gleeble−1500 thermal simulator machine. The microstructures of titanium matrix composites and phase transition temperature were investigated by means of XRD, DSC, OM, SEM. The tests were −3 −1 performed in the temperature range from 700 to 950 with interval of 50 , and strain rates range of 10 −1 s . The results show that the flow stress decreases with increasing deformation temperature and decreasing strain rate. When the strain rate is high, the influence of adiabatic temperature to the flow stress is co