Investigation of the Microstructural, Mechanical and Corrosion Properties of Grade A Ship Steel-Duplex Stainless Steel C
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INTRODUCTION
EXPLOSIVE welding is an effective method of producing multilayered materials which cannot be joined through any other techniques. Bi-metallic transitions are made with a solid-state welding process that uses controlled explosive energy to join two or more otherwise incompatible metals, for example, dissimilar combinations of metals such as copper and magnesium,[1] steel and copper,[2] steel and titanium,[3,4] steel and aluminum,[5,6] aluminum and magnesium,[7,8] copper and aluminum,[9,10] titanium and aluminum,[11,12] copper and titanium,[13] steel and stainless steel,[14] etc. Materials produced by explosive welding are widely used in various branches of industry because of their
YAKUP KAYA and NIZAMETTIN KAHRAMAN are with the Technology Faculty, Karabu¨k University, 78050, Karabu¨k, Turkey. Contact e-mail: [email protected] AHMET DURGUTLU and BEHC¸ET GU¨LENC¸ are with the Technology Faculty, Gazi University, 06500, Ankara, Turkey. Manuscript submitted February 15, 2017.
METALLURGICAL AND MATERIALS TRANSACTIONS A
unique combinations of mechanical and physical properties.[1] A clad steel plate is a composite steel plate obtained by joining stainless steel (cladding metal), etc., to a carbon or low alloy steel (base metal). The most important advantage is that not only is it less costly than similar steels made entirely of cladding materials, but it also provides other features including good mechanical strength and good resistance to heat and corrosion.[15] The yield strength of duplex stainless steel is approximately twice that of standard austenitic stainless steel. Moreover, the pitting resistance, stress corrosion, and corrosion fatigue performance of duplex stainless steel are significantly better than those of conventional austenitic stainless steel.[16] Due to their favorable mechanical and corrosion properties, duplex stainless steels are used in a wide range of applications. The higher strength properties allow weight savings, which reduce fabrication costs and enable lighter support structures to be used, and the higher corrosion resistance, in particular against stress corrosion cracking, makes them preferable in certain environments. Therefore, today, the use of duplex stainless steel, consisting
of approximately equal amounts of austenite and ferrite, is established in a wide variety of products, ranging from chemical tankers, pressure vessels and pipes to heat exchangers, paper machines, and offshore applications.[17] Explosive-welded bi-metal transition components provide a solution for corrosion control. Explosive welding is utilized for many industrial processing applications, including those for refineries and chemical plants as well as in the ship-building industry. Ship-building and marine bi-metallic transition joints are one of the oldest applications for explosive welding.[18] Recently, research has been carried out on the fatigue life,[19] numerical (smoothed particle hydrodynamic) simulation,[20] and physical/experimental modeling[21] of explosive-welded bi-metallic composit
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