Study on Thermal Deformation Behavior and Properties of Vacuum Hot-press Sintered W(50)/Cu-Al_2O_3 Composite

作     者：Zhang Xiaowei1, Tian Baohong1,2, Zhao Ruilong1, Zhang Yi1,2, Ren Fengzhang1,2 1 Henan University of Science and Technology, Luoyang 471003, China 2Henan Key Laboratory of Advanced Non-ferrous Metals, Luoyang 471003, China 

作者机构：Henan Univ Sci & Technol Sch Mat Sci & Engn Luoyang 471003 Peoples R China Henan Key Lab Adv Nonferrous Met Luoyang 471003 Peoples R China 

出 版 物：《稀有金属材料与工程》 (Rare Metal Materials and Engineering)

年 卷 期：2011年第40卷第S3期

页      面：253-255页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Science Foundation for Distinguished Young Scholars of Henan Province (6521002700) 

主　　题：hot-press sintering W(50)/Cu-Al2O3 thermal deformation constitutive equations 

摘      要：In this work, the tungsten particulate reinforced Al2O3 dispersion strengthened copper base composites were successfully fabricated by using a vacuum hot-press sintering method. With the test temperature varying from 650 to 950 ℃ and the strain rate varying from 0.01 to 5 s-1, the W(50)/Cu-Al2O3 composites were isothermally compressed on a Gleeble-1500D thermal simulator. The true stress-strain curves of the W(50)/Cu-Al2O3 under different test conditions were obtained. The dynamic recrystallization of the W(50)/Cu-Al2O3 composite occurs during the isothermal compression. The constitutive equations and the hot deformation activation energy of W(50)/Cu-Al2O3 composites were calculated on the basis of the above experimental results.