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

Anne Zulfia Syahrial,, E. C. Putro, M. Wahyudi, Donanta Dhaneswara, B. W. Utomo

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number012032
JournalIOP Conference Series: Materials Science and Engineering
Volume432
Issue number1
DOIs
Publication statusPublished - 19 Nov 2018
Event1st Materials Research Society-Indonesia Conference and Congress 2017, MRS-INA C and C 2017 - Yogyakarta, Indonesia
Duration: 8 Oct 201712 Oct 2017

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