Mechanical And Microstructural Properties Of Mg22al Alloys Fabricated Via Ac-Field Assisted Sintering Technology (Ac-Fast) Under Different Sintering Temperature

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Tekin T., Aydın Ş. M., Yahşi Y., Ferik S., İpek R.

World PM2022, Lyon, France, 9 - 11 November 2022, pp.1-7, (Full Text)

  • Publication Type: Conference Paper / Full Text
  • City: Lyon
  • Country: France
  • Page Numbers: pp.1-7
  • Dokuz Eylül University Affiliated: Yes

Abstract

In this study, high-strength aluminium-magnesium alloys were prepared by AC- electric field technique (FAST) using powder metallurgy. Effects of sintering temperature on the Al-Mg microstructure and mechanical properties were investigated. Results from microstructural observations indicate that the density decreases with the increase in the sintering temperature; also, the maximum compressive strength and hardness values increased. The sample of Mg22Al at 300 ∘C under a pressure of 30 MPa reached nearly full density (≈0.99 ρt), it has 510,4 MPa compression strength and 167,90 HV30 hardness value as the highest value among the samples. Using X-ray diffraction, intermetallic compounds such as Al3Mg2, Al12Mg17, MgO, MgAl, and Al2O3 were detected. These results can be attributed to the existence of Al. Al also plays a role as bonding phase-materials between Mg powders.