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Open AccessArticle

Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process

School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
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Metals 2019, 9(6), 680; https://doi.org/10.3390/met9060680
Received: 19 May 2019 / Revised: 9 June 2019 / Accepted: 10 June 2019 / Published: 13 June 2019
(This article belongs to the Special Issue Advanced Tungsten Materials)
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. View Full-Text
Keywords: W-Ni-Co alloys; mechanical properties; microstructure; two-step sintering W-Ni-Co alloys; mechanical properties; microstructure; two-step sintering
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Dong, H.; Li, P.; Ai, T.; Li, W. Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process. Metals 2019, 9, 680.

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