Grain Growth in Cryomilled Ni Powder during Degassing

From: Metallurgical and Materials Transactions | Date: June 1, 2007| Author: Han, B Q; Lavernia, E J; Thornton, J J | Copyright information

Grain growth during the degassing of Ni cryomilled in liquid nitrogen and that cryomilled in liquid argon was investigated by X-ray diffraction (XRD) and confirmed by transmission electron microscopy (TEM) studies. The Ni cryomilled in liquid argon was found to have significantly more thermal stability than the Ni cryomilled in liquid nitrogen, with grain sizes of 28 and 62 nm, respectively, after 32 hours of degassing at 723 K. The Ni cryomilled in liquid argon was found to have significantl...

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