TiC-Ni梯度功能材料的燃烧合成与残余应力分析  

COMBUSTION SYNTHESIS AND THERMAL STRESS ANALYSIS OF TIC-NI FGM

作　　者：张幸红[1] 韩杰才[1] 王保林[1] 杜善义[1] 

机构地区：[1]哈尔滨工业大学复合材料研究所,哈尔滨150001

出　　处：《宇航学报》2001年第1期89-94,共6页Journal of Astronautics

基　　金：国家自然科学基金项目资助!项目号 :1 990 2 0 0 3

摘　　要：采用自蔓延高温燃烧合成反应结合准热等静压技术 (SHS/PHIP)制备了组织连续分布的 Ti C- Ni系梯度功能材料 ,产物的成份分析显示 Ni元素沿厚度方向趋于连续过渡 ,改善了反应前的阶跃式分布。对 Ti C- Ni FGM在制备过程中的残余热应力进行了计算机有限元分析 ,并与 Ti C- Ni两层直接结合体进行了比较 ,发现 FGM具有明显的热应力缓和效果。TiC-Ni Functionally Gradient Material with continuous structure was prepared by self-propagating high-temperature combustion synthesis and hot pseudo isostatic pressing.Ni and Ti composition varies continuously and gradiently along the thickness of the reacted sample,remarkably different from stepwise type before SHS.Residual thermal stress of TiC-Ni FGM was analysed during preparation.It was showed that TiC-Ni FGM has the function of distortion and thermal stress relaxation comparing with a layered TiC-Ni Non-FGM.

关 键 词：自蔓延高温燃烧合成 TiC-Ni梯度功能材料 准热等静压 SHS/PHIP FGM 航空材料 

分 类 号：V257[一般工业技术—材料科学与工程]