Phase,microstructure and properties evolution of fine-grained W–Mo–Ni–Fe alloy during spark plasma sintering |
| |
| Affiliation: | 1. Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resource, Hainan University, Haikou 570228, China;2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;1. State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, Jilin, China;2. University of Chinese Academy of Sciences, 100049, Beijing, China;1. Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad 500 058, India;2. National Institute of Technology, Warangal 506004, India |
| |
| Abstract: | Fine-grained tungsten (W) heavy alloy containing molybdenum (Mo) with W particle sizes of less than 5 μm were fabricated by spark plasma sintering (SPS) pre-milling W–2Mo–7Ni–3Fe powder at a lower temperature of 1000–1250 °C. Phase, microstructure and mechanical properties evolution of W–Mo–Ni–Fe alloy during spark plasma sintering were studied in detail. As increasing sintering temperature, the hardness of the alloy decreased rapidly. However, bending strength of the alloy demonstrated a fall–rise–fall trend, and the maximum strength was obtained at 1150 °C. The W–2Mo–7Ni–3Fe alloy microstructure was composed of white W-grain, gray W-rich structure, black γ-(Ni, Fe, W, Mo) binding phase, and deep-gray W-rich structure. The intergranular fracture along the W/W grain boundary is the main fracture modes of W–2Mo–7Ni–3Fe alloy. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
