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Fatigue behaviour of friction welded medium carbon steel and austenitic stainless steel dissimilar joints
Research highlights ► Fusion welding of dissimilar metals is a problem due to difference in properties. ► Solid state welding process such as friction welding is a solution for the above problem. ► Fatigue life of friction welded carbon steel and stainless steel joints are evaluated. ► Effect of notch on the fatigue life of friction welded dissimilar joints is reported. ► Formation of intermetallic is responsible for reduction in fatigue life of dissimilar joints.
Abstract This paper reports the fatigue behaviour of friction welded medium carbon steel–austenitic stainless steel (MCS–ASS) dissimilar joints. Commercial grade medium carbon steel rods of 12mm diameter and AISI 304 grade austenitic stainless steel rods of 12mm diameter were used to fabricate the joints. A constant speed, continuous drive friction welding machine was used to fabricate the joints. Fatigue life of the joints was evaluated conducting the experiments using rotary bending fatigue testing machine (R =−1). Applied stress vs. number of cycles to failure (S–N) curve was plotted for unnotched and notched specimens. Basquin constants, fatigue strength, fatigue notch factor and notch sensitivity factor were evaluated for the dissimilar joints. Fatigue strength of the joints is correlated with microstructure, microhardness and tensile properties of the joints.
Fatigue behaviour of friction welded medium carbon steel and austenitic stainless steel dissimilar joints
Research highlights ► Fusion welding of dissimilar metals is a problem due to difference in properties. ► Solid state welding process such as friction welding is a solution for the above problem. ► Fatigue life of friction welded carbon steel and stainless steel joints are evaluated. ► Effect of notch on the fatigue life of friction welded dissimilar joints is reported. ► Formation of intermetallic is responsible for reduction in fatigue life of dissimilar joints.
Abstract This paper reports the fatigue behaviour of friction welded medium carbon steel–austenitic stainless steel (MCS–ASS) dissimilar joints. Commercial grade medium carbon steel rods of 12mm diameter and AISI 304 grade austenitic stainless steel rods of 12mm diameter were used to fabricate the joints. A constant speed, continuous drive friction welding machine was used to fabricate the joints. Fatigue life of the joints was evaluated conducting the experiments using rotary bending fatigue testing machine (R =−1). Applied stress vs. number of cycles to failure (S–N) curve was plotted for unnotched and notched specimens. Basquin constants, fatigue strength, fatigue notch factor and notch sensitivity factor were evaluated for the dissimilar joints. Fatigue strength of the joints is correlated with microstructure, microhardness and tensile properties of the joints.
Fatigue behaviour of friction welded medium carbon steel and austenitic stainless steel dissimilar joints
Paventhan, R. (Autor:in) / Lakshminarayanan, P.R. (Autor:in) / Balasubramanian, V. (Autor:in)
04.12.2010
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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