The aerospace industry has used premium quality castings for many years, in large part because many of the high temperature alloys used in turbine components can only be produced economically by casting. Recent advances in casting technology have greatly expanded the applicability of castings in aerospace. These advances include improved easting quality, improved dimensional accuracy, mierostruetural control, and mechanical property control, to the point that castings are now being applied to critical load carrying structures in both military and civil aircraft. The foundation for these significant advances has been laid by a cooperative effort between industry, universities and government agencies. This paper will enumerate some of these advances with specifie emphasis on quality improvement, microstructure control and process modeling.
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