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Meeting MS&T21: Materials Science & Technology
Symposium Powder Metallurgical Components in High Performance Applications
Presentation Title Microstructural Uniformity duringSsintering, Thermal-plastic Processing and Recrystallization of Tungsten
Author(s) Lin Zhang, Xingyu Li, Xuanhui Qu
On-Site Speaker (Planned) Lin Zhang
Abstract Scope Tungsten (W) is applied as the key components for modern electronics and coating technology and other industries. Processing such a refractory metal at high-temperature conditions (sintering, thermal-plastic deformation and heat treatments), ubiquitously results in W having heterogeneous behaviors in densification, grain growth, plastically response and recrystallization, giving rise to a non-uniform microstructural evolution. Microstructural uniformity and the possible effect of impurities make it both challenging and fundamentally critical for understanding basic properties and applications. This work starts by presenting polycrystalline W with different purity, aiming to study the microstructural and mechanical evolution during sintering, hot-rolling and recrystallization, and the possible effect of contaminated impurities on them. Further, it provides a fully densified bulk W with uniform microstructure and ~200 nm grain size by a simple pressureless two-step sintering method.
Proceedings Inclusion? Planned: At-meeting proceedings


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Development of Resistance Based Sintering for Metal Powders
Dispersing Tailored Nanoparticles through Powder Metallurgy Consolidation
Effect of Manufacturing Parameters on Inoculated PM Tool Steel Properties
Fabrication of Titanium and Titanium Alloy Components by Thermomechanical Powder Consolidation
High-strength Titanium Matrix Composites Reinforced with In Situ Polycarbosilane-derived TiC Particle
Microstructural Uniformity duringSsintering, Thermal-plastic Processing and Recrystallization of Tungsten
Selective Laser Melting of Metallic Glass Powder to Improve Chemical and Mechanical Performance of Magnesium
Synthesis of Low-oxygen Titanium towards Achieving Strength-ductility Synergy
Synthesis, Sintering and Mechanical Behavior of Ultra-fine Low-oxygen Titanium Powder
Thermodynamic Model for Predicting the Embodied Energy of Titanium Alloys Produced by Powder Metallurgy

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