Optimising the T6 heat treatment for gravity cast AlSi7MgCu0.5 alloy V8 cylinder heads
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, cilt.30, sa.4, ss.244-250, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 30 Sayı: 4
- Basım Tarihi: 2017
- Doi Numarası: 10.1080/13640461.2017.1290309
- Dergi Adı: INTERNATIONAL JOURNAL OF CAST METALS RESEARCH
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.244-250
- Anahtar Kelimeler: Cylinder head, heat treatment, microstructure, mechanical properties
- Dokuz Eylül Üniversitesi Adresli: Evet
Özet
Alternatives to the Standard T6 heat treatment that relied on a 5-h solution heat treatment at 490 degrees C were investigated in effort to reduce the heat treatment cycle time for the manufacture of AlSi7MgCu0.5 alloy V8 cylinder heads without sacrificing the mechanical properties while providing extra capacity in the heat treatment plant. The optimum T6 heat treatment process was identified to be a SHT at 545 degrees C for 1 h followed by ageing treatment at 180 degrees C for 3 h. Mechanical properties of the cylinder heads thus manufactured were markedly superior while the total heat treatment duration was reduced by 2.5 h with respect to the Standard heat treatment. This implied a capacity increase of %61 and rendered the undertaking of a major customer order possible.