Fabrication and characteristics of ADC-12 reinforced nano-SiC and nano-Al2O3 composites through stir casting route

1st Materials Research Society Indonesia Conference and Congress

Zulfia, A.^1 ; Putro, E.C.^1 ; Wahyudi, M.^1 ; Dhaneswara, D.^1 ; Utomo, B.W.^2

Department of Metallurgy and Materials Engineering, University of Indonesia, Depok

16436, Indonesia^1

Astra Honda Motor, Cikarang Barat

17530, Indonesia^2

关键词: Aluminum matrix;    Ceramic particle;    De-wetting;    Effect of addition;    Intermetallic phasis;    Reinforcement content;    Stir casting;    Stir casting method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/432/1/012032/pdf
DOI  :  10.1088/1757-899X/432/1/012032

来源: IOP

【 摘 要 】

Aluminum ADC-12 reinforced with nano-SiC and nano-Al2O3 have been successfully produced by stir casting method. The effect of addition nano SiC and Al2O3 into matrix has been studied with variation of 0.05, 0.10, 0.15, 0.20, 0.30 vf-% for each composites. The addition of Mg was introduced with 10 wt-% to promote wetting between molten Al and ceramic particle reinforcement. The OES result shows decreasing amount of excess Si and Mg in the composite compared to as-cast ADC-12. One of the main intermetallic phases present evenly in aluminum matrix is Mg2Si which was confirmed by EDS and XRD. The highest tensile strength and hardness of composites were achieved by the addition of 0.15 and 0.30 %vf SiC and Al2O3, respectively, with the values of 111 and 115 MPa and 42 and 41 HRB. The increasing hardness generated significant improvement in wear resistance of composites. The higher the reinforcement content, the higher the porosity formed, due to the tendency of dewetting as well as nano particles agglomeration.