Cryogenic Milling of Titanium Powder

Metals

Jiří Kozlík¹  Ilya Ibragimov¹  Miloš Janeček¹  Petr Harcuba¹  Josef Stráský¹  Tomáš Chráska² 

[1] Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic;Institute of Plasma Physics, Czech Academy of Sciences, 182 00 Prague, Czech Republic;

关键词: titanium;    attritor;    milling;    powder;    contamination;    texture;    UFG;    transmission Kikuchi diffraction;   

DOI  :  10.3390/met8010031

来源: DOAJ

【 摘 要 】

Ti Grade 2 was prepared by cryogenic attritor milling in liquid nitrogen and liquid argon. Two types of milling balls were used—stainless steel balls and heavy tungsten carbide balls. The effect of processing parameters on particle size and morphology, contamination of powder and its microhardness was investigated. Milling in liquid nitrogen was not feasible due to excessive contamination by nitrogen. Minor reduction of particle size and significant alterations in particle morphology depended on type of milling balls and application of stearic acid as processing control agent. Heavily deformed ultra-fine grained (UFG) internal microstructure of powder particles was observed by the method of “transmission Kikuchi diffraction”.

【 授权许可】

Unknown