A comparison of the sintering characteristics of ball-milled and attritor-milled W{endash}Ni{endash}Fe heavy alloy
- Faculty of Chemistry-Metallurgy, Department of Metallurgical Engineering, Technical University of Istanbul, Maslak, Istanbul 80626 (Turkey)
- Institute for Materials and Advanced Processes, University of Idaho, Moscow, Idaho 83844-3026 (United States)
Blended elemental W-7wt.{percent}Ni-3wt.{percent}Fe powders were mechanically alloyed in a planetary ball mill and a heavy duty attritor. The structural and morphological characteristics of the as-milled powders were characterized by x-ray diffraction and electron microscopy techniques. A ternary solid solution of Fe and Ni in W formed in both the cases; the amount of Ni and Fe dissolved is higher in the attritor-milled powder than in the ball-milled powder. Morphologically, the W-rich particles in the attritor-milled powders were spheroidal, smaller in size, and showed a narrower size distribution than in the ball-milled condition. These differences led to increased density in the attritor-milled powder compact and significant differences in chemical composition of the matrix region and W-rich grains. Transmission electron microscopy investigations of the matrix region in the compacts revealed the presence of Fe{sub 2}W precipitates uniformly distributed in an Ni(Fe,W) matrix. {copyright} {ital 1996 Materials Research Society.}
- OSTI ID:
- 286329
- Journal Information:
- Journal of Materials Research, Vol. 11, Issue 7; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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