Effect of Ti Addition to Age Hardening Response of Al-10Zn-6MgxTi Alloy Produced by Squeeze Casting

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ID: 45359
2018
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Abstract
This research focused on investigating the effects of Ti addition on the age hardening response of Al 7xxx alloy for Organic Rankine Cycle (ORC) turbine impeller application in power plant generators. Al-10Zn-6Mg wt. % alloys were produced by squeeze casting with 0.02, 0.05, and 0.25 wt. % Ti addition. As-cast samples were homogenized at 400 °C for 4 h. Solution treatment was conducted at 440 °C for 1 h, followed by quenching and ageing at 130 °C for 200 h. Age hardening result was observed using Rockwell B hardness measurement. Other characterizations included impact testing, STA, optical microscopy, and SEM-EDS. Results showed that the addition of Ti in all content variations increased the as-cast hardness due to the diminution of secondary dendrite arm spacing (SDAS) values of the alloy. Ageing at 130 °C strengthened the alloys, however the addition of Ti was not found to affect neither peak hardness nor impact values of the alloy. Identities of second phases formed during solidification were found to be T (Mg32(Al,Zn)49), β (Al8Mg5), and TiAl3, while precipitates produced during ageing were GP Zone, η′, and η (MgZn2).
Reference Key
ayu2018effectmatec Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ayu, Nurcahyaningsih Dwi;Risly, Wijanarko;Irene, Angela;Bondan, Tiara Sofyan;
Journal matec web of conferences
Year 2018
DOI
DOI not found
URL
https://doi.org/10.1051/matecconf/201818602009
Keywords
Engineering (General). Civil engineering (General) Technology Mechanical engineering and machinery environmental sciences neoplasms. tumors. oncology. including cancer and carcinogens genetics cytology

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