Mechanical characteristics of dissimilar alloy friction welded joint

Abstract

Shape Memory Alloys (SMAs) offer specific adaptability to complex shaped structural parts. In this study, two dissimilar shape memory alloys are welded by friction welding and put through mechanical testing to find the best results for those alloys that are welded together. On finding the best match of the alloys, we can compare the results with the alloy’s base properties. The shape memory alloy is welded with another shape memory alloy by solid-state welding that enhances the mechanical properties like hardness, tensile strength, flexibility, and improves its properties additionally in heat resistance and vibration resistance cost-efficiently. Friction welding was done using different parameters, and tensile testing was conducted for all the welded specimens. Metallurgical study was conducted for the highest tensile strength welded joint to produce a legitimate weldment that is capable of enduring sustained heat and vibration from other metals and gives a sustainable bond between the alloys, so they can be used in a large number of applications reducing the cost, creating a shape memory alloy weldment with another base alloy and to improve their characteristics without any loss of desired properties.

Keywords

• cu based shape memory alloy
• fe based shape memory alloy
• friction welding
• mechanical study
• metallurgical study