Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process
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The mechanical properties and microstructure of W-6Ni-4Co alloy through solid phase sintering and two-step sintering process were investigated. The results demonstrated that the particle sizes of W-6Ni-4Co alloy milled powders increased firstly and decreased later during a mechanical alloying process. The shape of alloy milled powders affected that of grains in alloy by solid phase sintering. The shape of W-rich particles in the alloys changed from stripes to network, to polygonal and to subsphaeroidal finally during two-step sintering process. The mechanical properties could be attributed to the densification and microstructure of alloys, and increased during two-step sintering with short dwelling time.
2014 ◽
Vol 24
(7)
◽
pp. 2251-2257
◽
2011 ◽
Vol 49
(01)
◽
pp. 40-45
◽
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