原位内生多相复合材料(NiAl—28Cr—6Mo)—TiC的高温力学行为  

ELEVATED TEMPERATURE DEFORMATION BEHAVIOR OF IN SITU MULTIPHASE COMPOSITE (NiAl-28Cr-6Mo)TiC

作　　者：姜东涛[1] 郭建亭[1] 李谷松[1] 师昌绪[1] 

机构地区：[1]中国科学院金属研究所,沈阳110015

出　　处：《金属学报》1998年第11期1143-1148,共6页Acta Metallurgica Sinica

基　　金：国家863计划!715-005-0030;国家自然科学基金!59895150

摘　　要：运用燃烧合成工艺制备了一种多相内生金属问化合物基复合材料（NiAl—28Cr—6Mo）－TiC．复合材料的高温变形行为显示流变应力随温度升高或初始应变速率减小而降低，服从幂指数规律求出了不同含量TiC时复合材料的应力指数n和激活能Q，与同类NiAl基复合材料进行了比较分析.An intermetallic matrix composite (NiAl-28Cr-6Mo)-TiC has been successfully fabricated by using reaction synthesis method. The elevated temperature deformation behavior of the in situ multiphase composite was investigated. The flow stress decreases with increasing temperature or decreasing initial strain rate. The deformation behavior of the composite can be adequately described by the power law. The stress exponent and activation energy are calculated and compared with other similar NiAl-based composites.

关 键 词：金属间化合物 NIAL 原位内生 复合材料 高温变形 

分 类 号：TB333[一般工业技术—材料科学与工程] TG13[金属学及工艺—合金]