|About this Abstract
||Materials Science & Technology 2012
||Steel Product Metallurgy and Applications
||A Study on Metallurgical Characteristics of Friction Welded Joint between Nimonic80A and Heat Resisting Steelheat Resisting Steel
||Hyunjoon Park, Myung-Seop Han, Young-Cheol yoon
|On-Site Speaker (Planned)
Due to the economical and technical advantages of the friction welding application, friction welded nickel-based alloy with heat resisting steel is widely used in the industrial production fields of the mechanical components such as gas turbines, marine diesel engines, and automobile industry. In this study, specific heat treatment for the friction welded joint between Nimonic80A and heat resisting steel was applied to examine metallurgical behavior of the joint. Furthermore, experimental and analytical investigations were performed to investigate fracture characteristics of the friction welded joint between Nimonic80A and heat resisting steel. Metallography and micro-hardness test indicated that the welds are composed of three zones; thermo-mechanically affected zone, heat affected zone, and the base metal. The peak profile in micro-hardness at the welded region disappeared after heat treatment, which was attributed to the extinction of work hardening. It was found that heat treatment formed titanium free region at the weld line inducing significant reduction of strength of the welded joint.
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