Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1603943 | International Journal of Refractory Metals and Hard Materials | 2011 | 5 Pages |
Abstract
Mechanical milling proceeded by sintering was used to synthesize nanostructured temperature-resistant TZM alloy. Milling under Ar for different times (1, 2, 3, 5, 10, 15, 20, 25, and 30 h) and sintering at 1500, 1600 and 1700 °C for 30, 45, 60 and 90 min resulted in increasing of low-energy grain boundaries (LEGBs) and dispersion of TiC and ZrC with a size of ~ 65 nm in the matrix near LEGBs. Morphology and grain size of the products were determined from scanning electron microscope (SEM) images and X-ray diffraction (XRD) patterns, almost precisely. Optimum density of nanostructured TZM alloy ~ 9.95 ± 0.01 g/cm3 was achieved by sintering at 1700 °C for 90 min.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
E. Ahmadi, M. Malekzadeh, S.K. Sadrnezhaad,