Effects of activated sintering process on properties and microstructure of W-15Cu alloy |
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| Authors: | Xiaoliang Shi Shuwei Wang Xingyong Yang Qiaoxin Zhang Yufu Wang |
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| Affiliation: | (1) ATI Engineered Products, Huntsville, AL 35806, USA;(2) Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, S. Korea;(3) CetaTech, Inc., Sacheon, Gyungnam, 664-953, S. Korea;(4) College of Engineering, San Diego State University, San Diego, CA 92182-1326, USA |
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| Abstract: | The effects of activated sintering technology of H2 atmosphere sintering on the microstructure and properties of W-15Cu alloy using ultrafine W-15Cu composite powder fabricated
by spray drying & calcining-continuous reduction technology were investigated. The experimental results showed that W-15Cu
alloy, consolidated by activated sintering technology of H2 atmosphere sintering for 1 h at 1300 °C, with 98.5 % relative density, transverse rupture strength 1218 MPa, Vickers hardness
HV0.5 378, average grain size about 1.2 μm and thermal conductivity 192 W/m·K, was obtained. In comparison to the normal sintering
process, activated sintering process to W-15Cu alloy could be achieved at lower sintering temperature. Furthermore, better
properties in activated sintered compacts were obtained, and activated sintering process resulted in finer microstructure
and excellent properties. |
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| Keywords: | ultrafine composite powder W-15Cu alloy activated sintering process microstructure properties |
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