Microstructure and properties of W-15Cu alloys prepared by mechanical alloying and spark plasma sintering process

被引:0
作者
Qiaoxin Zhang
Xiaoliang Shi
Hua Yang
Xinglong Duan
机构
[1] Wuhan University of Technology,School of Mechanical and Electronic Engineering
[2] Wuhan University of Technology,State Key Laboratory of Advanced Technology for Materials Synthesis & Processing
来源
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2008年 / 23卷
关键词
W-15Cu; mechanical alloying; spark plasma sintering (SPS);
D O I
暂无
中图分类号
学科分类号
摘要
W-15Cu composite powders prepared by mechanical alloying (MA) of raw powders were consolidated by spark plasma sintering (SPS) process at temperature ranged 1 230–1 300 °C for 10 min and under a pressure of 30 MPa. By using high energy milling, particles containing very fine tungsten grains embedded in copper, called composite particles, could be produced. The W grains were homogeneously dispersed in copper phase, which was very important to obtain W-Cu alloy with high mechanical properties, fine and homogeneous microstructure. The microstructure and properties of W-15Cu alloys prepared by SPS processes at different temperature were researched. The results show that W-15Cu alloys consolidated by SPS can reach 99.6 % relative density, and transverse rupture strength (TRS) is 1 400.9 MPa, Rockwell C hardness (HRC) is 45.2, the thermal conductivity is 196 W/m·K at room temperature, the average grain size is less than 2 μm, and W-15Cu alloy with excellent properties, homogeneous and fine microstructure is obtained.
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页码:399 / 402
页数:3
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