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Meeting MS&T23: Materials Science & Technology
Symposium Metal Powder Synthesis and Processing: Fundamental Aspects and Modeling
Presentation Title Microstructural Characterization of Zn-3Mg(wt.%) Processed by High-pressure Torsion
Author(s) Tanzilur Rahman, Connor Wasick, Hakan Yilmazer, Megumi Kawasaki, Burak Dikici, Kaveh Edalati, Carl J. Boehlert
On-Site Speaker (Planned) Tanzilur Rahman
Abstract Scope High-pressure torsion (HPT) is a solid-state metalworking process used to achieve equiaxed ultrafine grains, which tend to promote higher strength and hardness. In this work, HPT was carried out on a cast-then-homogenized Zn-3Mg(wt%) alloy and pure Zn and Mg powders in a mass ratio of Zn-3Mg, under 6 GPa pressure for different numbers of turns at room temperature. The Vickers microhardness distribution, with respect to equivalent strain, varied for the alloy and powder-processed HPT disks, though it reached a saturation level in both cases. The microstructure in different regions of the HPT disks was characterized using XRD, SEM, EBSD, APT, and TEM. The grain size, phase morphology, and the formation of different intermetallics were analyzed and used to explain the hardness distribution. The grain size of the pure Zn phase refined from about 3 microns at the initial strain to nano-sizes at the higher strains in both HPT-processed materials.


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Effect of Li Concentration on Morphology of Precipitates in Nanocrystalline Cu-3Ta
FEM Analysis of Temperature and Stress Distribution Behavior of Al20Cr20Fe25Ni25Mn10 High Entropy Alloy in Spark Plasma Sintering: Effect of Consolidation Time on Microstructure
Flowability and Suitability of Mechanically Derived Powders for Additive Manufacturing
Microstructural Characterization of Zn-3Mg(wt.%) Processed by High-pressure Torsion
Microstructure Alignment Effects from Engineered Cooling during Additive Manufacturing of Alnico Magnets from Pre-alloyed Powder
Resolving the Sintering Conundrum of Tungsten Alloys
Understanding the Geometry Accuracy and Surface Roughness of Thin Wall Structures for 316L Stainless Steel in Laser Powder Bed Fusion Additive Manufacturing
Vacuum Hot Pressing of Oxide-dispersion Strengthened (ODS) Ferritic Steel Powders Guided by Temperature-scanning High-energy X-ray Powder Diffraction Analysis

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