Properties of AA7075 aluminum alloy in aging and retrogression and reaging process

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Atıf İçin Kopyala

ÖZER G., KARAASLAN A.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, cilt.27, sa.11, ss.2357-2362, 2017 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 27 Sayı: 11
• Basım Tarihi: 2017
• Doi Numarası: 10.1016/s1003-6326(17)60261-9
• Dergi Adı: TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.2357-2362
• Yıldız Teknik Üniversitesi Adresli: Evet

Özet

A retrogression process was applied to AA7075 alloy at 180, 240 and 320 degrees C for 1, 30, 50, 70, 90 and 120 min. After the retrogression, aging treatment was reapplied with T6 conditions (120 degrees C, 24 h). The mechanical properties of aged samples were determined by V-Charpy and hardness tests and also, physical properties of samples were determined by electrical conductivity tests. Moreover, microstructural properties were characterized by light microscope and transmission electron microscope. The results show that the effects of the temperature and the duration of the retrogression and reagent on the impact toughness and hardness are related to the precipitates at the grain boundary.