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The Effects of Rotation Speed and Friction Time for Joining of AISI 4340 2205 Steels by Friction Welded      
Yazarlar
Uğur Çalıgülü
Fırat Üniversitesi, Türkiye
Yalçınöz Mehmet
Katı Nida
Balalan Zülküf
Prof. Dr. Serkan ISLAK
Kastamonu Üniversitesi, Türkiye
Özet
Friction welding is a solid state joining process used extensively currently owing to its advantages such as low heat input, high production efficiency, ease of manufacture, and environment friendliness. Materials difficult to be welded by fusion welding processes can be successfully welded by friction welding. In the fusion welding methods for joining different materials, brittle intermetallic compounds phases are produced in the fusion zone, which reduces the strength of the welding joint. In this study, the effects of rotation speed and friction time for joining of AISI 4340-2205 steels welded by friction are investigated. Specimens of AISI 4340 tempered steel and AISI 2205 duplex stainless steel, each of 12 mm diameters, are used to fabricate the joints. The friction welding tests are carried out using a direct-drive type friction-welding machine, which was designed and manufactured for this purpose by us. After friction welding, in order to determine the occurred microstructural changes, the interface regions of the welded specimens are examined by means of OM, SEM, EDS and X-Ray analysis. Microhardness and tensile tests are conducted to determine the mechanical properties of the welded specimens. The experimental results indicate that AISI 4340 tempered steel could be joined to AISI 2205 duplex stainless steel using the friction welding technique and for achieving a weld with sufficient strength. Tensile strength values also confirm this result, and, at the interface, intermetallic phases do not occurred. The maximum tensile strength of 635.66 MPa could be obtained for the joints welded under the welding conditions of rotation speed of 2200 rpm, friction pressure of 40 MPa, forging pressure of 80 MPa, friction time of 6 s, and forging time of 3 s.
Anahtar Kelimeler
AISI 2205 | AISI 4340 | Friction time | Friction welding | Rotation speed
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Metallofizika I Noveishie Tekhnologii
Dergi ISSN 1024-1809
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 06-2015
Cilt No 37
Sayı 5
Sayfalar 665 / 681
Doi Numarası 10.15407/mfint.37.05.0665