液-固原位反应合成TiB_2/Cu-Cr复合材料的性能  

Properties of TiB_2/Cu-Cr Composites Fabricated by ln-situ Synthesis of Liquid-solid

作　　者：翟启明[1] 徐文清[1] 谢春生[1] 

机构地区：[1]江苏科技大学先进焊接技术省级重点实验室,江苏镇江212003

出　　处：《机械工程材料》2007年第3期26-29,共4页Materials For Mechanical Engineering

摘　　要：通过液-固原位反应法合成了TiB_2/Cu-Cr复合材料,对其微观结构、力学性能进行了研究,探讨了其强化机理。结果表明:复合材料经处理后其硬度为140HV,电导率为93.6%IACS,软化温度为560℃,抗拉强度为466MPa,伸长率为22%;拉伸断口呈现大量等轴韧窝,具有较好的综合性能。The process of TiB2/Cu-Cr composites synthesized by In-situ reaction of liquid-solid was explored. Microstructure, mechanlcal properties and strengthening machanism of composites were studied. The results show that composites have fairly good comprehensive properties. The hardness, electrical conductivity, softening temperature, tensile strength and elongation percentage of the composites are 140 HV, 93. 6%IACS, 560 ℃, 466 MPa and 22%, respectively. The tensile fracture photograph showed many isometric dimples.

关 键 词：原位合成 铜基复合材料 TIB2颗粒 

分 类 号：TB331[一般工业技术—材料科学与工程] TG113.25[金属学及工艺—物理冶金]