摘要
基于陶瓷/钛合金之间的液态熔合扩散,采用离心反应熔铸工艺制备出Ti B_2基陶瓷/Ti-6Al-4V合金层状复合材料,并在层间出现Ti B_2、Ti C_(1-x)呈空间尺度连续梯度演化的梯度纳米复合结构。经层间剪切强度、三点弯曲强度与单边切口梁(SENB)断裂韧性测试,该复合材料层间剪切强度、弯曲强度与断裂韧性分别达到335±35 MPa、862±45 MPa与45±15 MPa·m^(0.5)。
Based on fusion bonding and atomic interdiffusion between the liquid ceramic and molten Ti-based alloy,the laminated composites of Ti B_2-based ceramic and Ti-6Al-4V alloy were achieved by centrifugal reactive casting,and within the interlaminar region the composite microstructures of nano-structured gradient developed with the continuously-graded evolution of Ti B_2 and Ti B in spatial size.Interlaminar shear strength,flexural strength and fracture toughness reach to 335±35 MPa,862±45 MPa and 45±15 MPa·m^(0.5),respectively.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2018年第S1期118-122,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51072229)
关键词
陶瓷/金属层状复合材料
离心反应熔铸法
梯度纳米结构界面
损伤失效
ceramic/metal laminated composites
centrifugal reactive casting
nano-structured gradient interface
damage and failure
