Effect of Copper on Corrosion of Forged AlSi1MgMn Automotive Suspension Components

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Atıf İçin Kopyala

KÖKTAŞ S., Gokcil E., Akdi S., Birol Y.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, cilt.26, sa.9, ss.4188-4196, 2017 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 26 Sayı: 9
• Basım Tarihi: 2017
• Doi Numarası: 10.1007/s11665-017-2862-9
• Dergi Adı: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.4188-4196
• Anahtar Kelimeler: aluminum alloys, copper, corrosion, forging, MG-SI ALLOYS, INTERGRANULAR CORROSION, GRAIN-STRUCTURE, HEAT-TREATMENT, FORGINGS, EXTRUSION, CHROMIUM, ALUMINUM, STOCK
• Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Recently, modifications in the alloy composition and the manufacturing process cycle were proposed to achieve a more uniform structure with no evidence of coarse grains across the section of the AlSi1MgMn alloys. Cu was added to the AlSi1MgMn alloy to improve its age hardening capacity without a separate solution heat treatment. However, Cu addition degrades the corrosion resistance of this alloy due to the formation of Al-Cu precipitates along the grain boundaries that are cathodic with respect to the aluminum matrix and thus encourage intergranular corrosion. The present work was undertaken to identify the impact of Cu addition on the corrosion properties of AlSi1MgMn alloys with different Cu contents. A series of AlSi1MgMn alloys with 0.06-0.89 wt.% Cu were tested in order to identify an optimum level of Cu addition.