Abstract
AISI 4130 low alloy steel has been bonded to a Duplex 2205 stainless steel by an industrial hot extrusion process, the final product being a seamless clad tube with an internal lining of this corrosion resistant alloy. The interdiffusion of the different elements through the interface has been determined using EDS microanalysis in SEM. The mechanical properties of heat treated bimetallic tubes after quenching followed by several temperings have been assessed by tensile tests in the temperature range from R.T. to 270°C. After appropriate tempering the requirements for the mechanical properties of L80, P105 and P110 API grades are easily fullfilled
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