摘要
采用反应合成工艺制备了纳米Al_2O_3-弥散强化铜合金。结果表明:铜基体内部均匀、弥散分布着粒径约10 nm的γ-Al_2O_3纳米颗粒,纳米颗粒与基体间界面清洁,且存在如下的晶体学位向关系:(002)Cu//(133)γ-Al_2O_3,[110]_(Cu)//[011]_(γ-Al_2O_3)。该工艺制备的合金性能优异,室温抗拉强度和屈服强度可达570和533 MPa,抗软化温度高于900℃,同时合金的导电率和洛氏硬度值分别为85%IACS和86 HRB。
Alumina dispersion strengthened copper（ADSC） composite was prepared by reaction synthesis（RS） process. Results show that nano-sized γ-Al2O3 particles with about 10 nm in size are homogeneously distributed in copper matrix. A coherent interface relationship with（002）Cu //（13 3） γ-Al2O3, and [110]Cu//[011]γ-Al2O3 characterizes along the explored interfaces of the composites. All of the interfaces are clear and closely combined with each other. The composites have high properties, the tensile strength can reach 570 MPa and the yield strength can reach 533 MPa at room temperature. Meanwhile, the softening temperature is higher than 1173 K. The electrical conductivity of the sample is 85% IACS and the Rockwell hardness can reach 86 HRB.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2016年第4期893-896,共4页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(5043202)
关键词
复合材料
界面
弥散强化铜
粉末冶金
反应合成
composites
interface
dispersion strengthened copper
powder metallurgy
reaction synthesis
作者简介
张雪辉，男，1985年生，博士生，北京有色金属研究总院粉末冶金及特种材料研究所，北京100088，电话：010-82241215，E-mail：zxh312264585@163．com
