Thermal shock fatigue behavior of TiC/Al_2O_3 composite ceramics

作     者：SI Tingzhi LIU Ning ZHANG Qing＇ an YOU Xianqing SI Tingzhi~a LIU Ning~b ZHANG Qing’an~a YOU Xianqing~b ~a School of Materials Science and Engineering,Anhui University,of Technology,Ma’anshan 243002,China ~b School of Materials Science and Engineering,Hefei University of Technology Hefei 230009,China

作者机构：School of Materials Science and Engineering Anhui University of Technolog3 Ma ＇anshan 243002 China School of Materials Science and Engineering Hefei University＇ of Technology Hefei 230009 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2008年第27卷第3期

页      面：308-314页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：ceramic matrix composites TiC/Al2O3 composites thermal shock fatigue fatigue behavior fatigue resistance 

摘      要：The thermal shock fatigue behaviors of pure hot-pressed alumina and 30 wt.% TiC/Al2O3 composites were studied. The effect of TiC and Al2O3 starting particle size on the mechanical properties of the composites was discussed. Indentation-quench test was conducted to evaluate the effect of thermal fatigue temperature difference （ΔT） and number of thermal cycles （Ⅳ） on fatigue crack growth （Δa）. The mechanical properties and thermal fatigue resistance of TiC/Al203 composites are remarkably improved by the addition of TiC. The thermal shock fatigue of monolithic alumina and TiC/Al2O3 composites is due to a ＂true＂ cycling effect （thermal fatigue）. Crack deflection and bridging are the predominant reasons for the improvement of thermal shock fatigue resistance of the composites.