Investigation on preparation and mechanical properties of W–Cu–Zn alloy with low W–W contiguity and high ductility
作者： Lingling Zheng , Jinxu Liu , Shukui Li , Guohui Wang , Wenqi Guo
DOI: 10.1016/J.MATDES.2015.07.106
关键词: Brass 、 Precipitation hardening 、 Tungsten 、 Alloy 、 Ductility 、 Spark plasma sintering 、 Materials science 、 Microstructure 、 Metallurgy 、 Relative density
摘要: Abstract In order to improve the mechanical properties of W–Cu alloy, W–Cu–Zn alloys with low W–W contiguity were fabricated by three different preparation methods. For first method, mixed powder copper-coated tungsten and Zn was sintered SPS (Spark Plasma Sintering) process. second processed CIP (Cold Isostatic Pressing) before SPS. third a skeleton prepared CIP, then infiltrated H70 brass. The microstructure, failure mechanism investigated. results show that alloy method achieves high relative density 98.4% 10%. exhibits dynamic compressive strength 1000 MPa, critical strain 0.7. Cu-Zn matrix is composed α-phase Cu–Zn Cu3Zn particles. homogeneous distribution in manifests good solution strengthening effect uniformly distributed particles has strong precipitation effect, which are both responsible for evidently enhanced properties.
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