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Very strong pure Ti, with room temperature compressive yield stresses up to 1.80GPa, was developed by field assisted hot pressing of a mixture of hcp (α) and fcc powders produced by mechanical milling. During consolidation the fcc phase decomposes into α-Ti and a dispersion of TiC particles. Tuning the pressing temperature and time allows controlling the grain and particle size and, thus, the yield...
This study analyzed the effect of high-energy milling (HEM) and subsequent isothermal annealing on the microstructural characteristics of a pre-alloyed AZ91 Mg alloy powder. To this end, the mentioned powder was milled for 14h using a horizontal attritor. Then, the mechanically milled powder was isothermally annealed at temperatures ranging from 200°C to 500°C for 1h up to 4h in an Ar atmosphere....
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