IMSE Seminar with Peter Collins on Titanium Alloys

An Integrated Computational Materials Engineering (ICME) framework has been developed and applied for multiple variants of large-area additive manufacturing of the aerospace alloy Ti-6Al-4V.  The approach permits the integration of (i) mesoscopic models of heat-transfer and a moving energy source with (ii) kinetic and thermodynamic models for the prediction of key aspects of the materials state and the subsequent (iii) uniaxial tensile properties and (iv) statistical methods of developing so-called “design allowable curves”.  This previous effort has demonstrated which aspects of the materials state seem to matter for this particular alloy, as well as correlated features that could be measured.  This knowledge can be used to provide new directions for fundamental research, including the development of a new microscope capable of conducting a variant of orientation microscopy over very large areas.

P.C. Collins is a Professor and Stanley Chair in Interdisciplinary Engineering, Entrepreneurial Fellow, and Associate Chair within the Department of Materials Science and Engineering at Iowa State University and an affiliated faculty in Aerospace Engineering. He received his Ph.D. from The Ohio State University in Materials Science and Engineering. Prior to starting in his first university role, he set up a not-for-profit advanced manufacturing facility embedded in an Army Arsenal. Dr. Collins is actively involved in two NSF Industry/University Cooperative Research Centers, serving as the co-director for the Center for Advanced Non-Ferrous Structural Alloys, and as past director for the Center for Nondestructive Evaluation (CNDE). His primary research interests involve: the physical metallurgy of advanced non-ferrous materials; advanced characterization techniques including various electron microscopies and emergent spectroscopic methods; quantification of defects and crystal orientation across length scales; combinatorial materials science; advanced materials processing with special interest in additive manufacturing; and the mechanical behavior of non-ferrous materials, including establishing composition-microstructure property relationships. He has conducted basic and applied research on metal-based additive manufacturing for over 20 years, and most recently has worked to demonstrate new methods to fully characterize the materials state of additively manufactured metallic systems. He has received multiple awards for teaching and his research, and has been actively involved in a variety of professional societies, planning of conferences and symposia, various government panels and working groups, and has 70+ publications, 50+ invited talks, and multiple US patents.

Faculty, students, and the general public are invited.