Investigation Regarding Al-Al2O3 Composite Material Production and Its Weldability to Aluminum by Diffusion Welding

Abstract

In this study, firstly, a composite material aluminum based and containing 10 % Al₂O₃ by weight is produced by powder metallurgy method. In the production of composite samples being 10 mm in diameter and 15 mm in length, first Al and Al₂O₃ powders were mixed for 2 hours in a high – energy  attritor and then pressed in a unidirectional axial die  at 800  MPa pressure. The pressed samples were sintered in a tubular furnace in a protective argon gas ambiance at 650°C for 2 hours. As for the second stage, the composite samples have been welded by diffusion welding to an Al block material in 99.5% purity and in the same dimensions at 5 MPa – constant load at different temperatures and durations by diffusion welding. The strength values of welded samples were determined by making shear tests from the welding zones versus composite material.

Keywords

• Powder metallurgy,Composite,Diffusion welding

References

1. 1. Prof. Dr. Nizamettin KAHRAMAN (Karabük Üniversitesi, Teknoloji Fakültesi, İmalat Müh. Böl, Demir Çelik Kampüsü, 78050 KARABÜK) [e-mail], Tel: [phone] / 1328
2. 2. Prof. Dr. Mustafa AYDIN (Manisa Celal Bayar Üniversitesi, Hasan Ferdi Turgutlu Teknoloji Fakültesi, İmalat ve Makina Mühendisliği Bölümü, Turgutlu/MANİSA). (0236) 314 10 10, [e-mail]
3. 3. Prof. Dr. Adem KURT (Gazi Üniversitesi, Teknoloji Fakültesi, Metalurji ve Malzeme Müh. Böl. 06500, Beşevler/ANKARA), [e-mail], 3122028778.