You're invited to a seminar with Mr. Sainand Jadhav, a Ph.D. candidate studying mechanical engineering and graduate teaching assistant in the manufacturing engineering technology department at the Tennessee Technological University, titled "Wire + Arc Additive Manufacturing (WAAM) of Refractory Alloy-Based Bimetallic Structures."

Abstract: Current industrial applications (nuclear reactors, gas turbines) involving high operating temperatures demand materials with customized features and site-specific properties, and many such applications use bimetallic structures. Bimetallic structures combine two dissimilar materials in one structure offering unique properties from both materials. Although using welding techniques to fabricate bimetallic structures is economical, there are still many critical issues such as heat-affected zone, cracking, and premature failures due to brittle intermetallic phase formation. In recent years, metal additive manufacturing (AM) has been investigated extensively for the processing of bimetallic structures. The first part of the talk will introduce the bimetallic structures and wire arc additive manufacturing (WAAM). The second part will describe the fabrication and material characterization of refractory alloy-based bimetallic structures (Ti64-NbZr1, TZM-NbZr1, 90WNiFe-In625) prepared by wire arc additive manufacturing. In this section, the effect of heat input and processing parameters on interfacial microstructure and mechanical properties will be discussed.

Biography: Mr. Sainand Jadhav is currently a PhD Candidate (Mechanical Engineering) and Graduate Teaching  Associate in the Department of  Manufacturing Engineering Technology at the Tennessee Technological University, Cookeville, TN, USA. He is graduating with PhD in Mechanical Engineering in May 2024. He received a B.S. degree in Mechanical Engineering from Shivaji University, India, in 2006 and a Master of Technology (M. Tech.)  degree in Mechanical Engineering (CAD/CAM) from the Bharati Vidyapeeth Deemed University, India in 2013. He has 2.5 years of industry experience and 11 years of teaching experience. He taught variety of undergraduate/graduate courses including engineering drawing, CAD/CAM, Mechatronics, Robotics and Automation, Mechanical Measurements and Control, Machine Design, Vibration. His current research includes the fabrication and characterization of wire arc additively manufactured refractory alloy-based bimetallic structures for high-temperature applications. His research interests lie in the areas of advanced materials, additive manufacturing, mechatronics, and materials characterization over a wide range of length scales. He explores boundaries of materials characterization to create an in-depth understanding of the materials processing-structure-properties relationship.