Abstract
In order to estimate mechanical alloying properties of Cr-based alloy, as the master alloy for preparing MA6000 superalloy, milling characteristics of Cr-Al-Ti-Ta-based alloy were examined by using vibration ball mill. Results were summarized as follows:
1) Best results were obtained from a milled 60 wt% Cr-based alloy. Mean particle size of this alloy was of 3.2 μm when milled for 18 ks.
2) The 60 wt% Cr-based alloy is apt to the master alloy for MA6000 superalloy, because milling charac-teristics of it are superior to those of Ni-17Al-28Ti alloy.
3) The oxygen content of the 60 wt% Cr-based alloy crushed into +100 mesh was less than 0.04 wt%, of which the value increased with decreasing particle size, and came to a value of 1.1 wt% at milled into 2.7 μm (Fsss).
