| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Light Metal Technology
|
| Presentation Title |
Characterisation of A201 Alloy Produced by Low Pressure Die Casting into Resin Sand Moulds |
| Author(s) |
Ali Kalkanli, Ahmet Altun, Cem Cetinkaya, Levent Subası, Barıs Bilal Altıntas, Erdem Bektas, Guray Akbulut |
| On-Site Speaker (Planned) |
Ali Kalkanli |
| Abstract Scope |
Since high strength aluminum Al-Cu-Mg-Mn alloys such as A201 having Ag are used for engine parts at elevated temperatures. The major drawback for these alloys are microshrinkage and needlelike brittle Al6(MnFeCu) Al20Mn3Cu2 intermetallics. Step like heating from room temperature to 515 0C waiting 5 hours until dissolution of intermetallics then by subsequent increasing to 538 0C holding 20 hrs for full homogenization were effective in elimination of melting cavities left due to incipient melting. The tensile strength values increased from 312 MPa to 432 MPa but percent elongation reduced to from 4,6 to 3,5% for sand cast A201 alloy samples by repeating T6 heat treatment third times for gravity sand cast specimens. Tensile test results of LPDC specimens after T6 Heat treatment 431MPa (yield) and 445 MPa (tensile) are higher than gravity sand cast series which is an evidence of lower microshrinkage in LPDC alloy series. |