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Evaluation of the mechanical properties of high nitrogen-containing austenitic stainless steel friction stir welds

8th International Symposium
May 2010

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The optimal conditions for the friction stir welding of high-N-containing austenitic stainless steel were evaluated. The influence of heat input (welding speed (50-400 mm/min)) on the surface appearance, macrostructure, microstructure, hardness, yield strength and tensile strength was investigated. Welds were made in Fe-23Cr-0Ni-1Mo-1N steel (2 mm thickness and produced by pressurised electroslag remelting) using a load-controlled FSW machine and a Si3N4 based tool. Orientation image microscopy was used to examine grain size and phase identification.

8th International Symposium, 18-20 May 2010, Session 8B: Nickel and Stainless Steel, Paper 04

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