Microstructural Evolution of Cr-Ta Powder in the Process of Mechanical Alloying

Abstract:

High energy ball mill tests under the condition of the ball material mass ratio 13:1 and the rotate speed 400 r/min have been employed to investigate the process of mechanical alloying (MA) of Ta and Cr powder mixed in the mole ratio of 1:2.The microstructure evolution process and phase composition were explained useing scanning electron microscope (SEM) and X-ray diffraction (XRD). The results show that, the milled 20h powder existed in Ta (Cr) supersaturated solid solution and amorphous after 40h. Although the hours were spent on ball milling reached to 50h, Laves phase TaCr₂ had not been made during the process.

• Periodical: Advanced Materials Research (Volume 1094)
• Pages: 300-304
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1094.300
• Online since: March 2015
• Authors: Jing Yao, Shi Qiang Lu*, Xuan Xiao
• Keywords: Laves Phase, Mechanical Alloying, Microstructural Evolution, TaCr₂

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