COMPARISON OF MICROSTRUCTURE OF AL-CU ALLOYS CAST IN CALCITE INVESTMENT SHELL AND DRY SAND MOULDSJournal: International Journal of Engineering Sciences & Research Technology (IJESRT) (Vol.4, No. 11)
Publication Date: 2015-11-30
Authors : A. Chennakesava Reddy;
Page : 688-693
Keywords : Investment shell moulds; dry sand moulds; calcite; hot strength; thermal expansion; microstructure.;
The investment shell moulds were fabricated with ceramic slurry containing calcite as a filler material and colloidal silica binder. The shell characteristics in terms of hot bending strength, thermal expansion and thermal conductivity were measured. The microstructure and tensile strength of Al-Cu alloys cast in calcite investment shell and dry sand moulds were compared. The thermal conductivity of calcite investment shell moulds decrease with increase of temperature. In the 5-10% Cu alloys there is little difference in structure between the as-cast alloys.
Other Latest Articles
Last modified: 2015-11-29 17:14:50