Showing 32 results for Author: Gerry L. Knapp
Nov, 2023
Journal
Integrated computational materials engineering (ICME) methods combining CALPHAD with process-based simulations can produce rich, high-dimensional data for alloy and process design. In ICME methods for metallurgical applications, the visualization and interpretation of such high-dimensional data has previously been through heat maps represented in 2 or 3 dimensions. While s…
Nov, 2023
ORNL Report
The Advanced Materials and Manufacturing Technologies program is a multi-laboratory effort to bring advanced manufacturing to bear for nuclear applications, as well as to the greater industrial market. As part of this endeavor, the Advanced Materials and Manufacturing Technologies program, in concert with other standards bodies, is working to direct an accepted qualificati…
Nov, 2023
Journal
Melt pool scale numerical modeling of additive manufacturing (AM) processes can provide predictive capabilities and theoretical insight into the process-property-structure-performance relationships for AM parts. Despite capabilities of numerical models to solve complex multi-physics problems, it is often important to consider a tradeoff between detailed physics and computa…
Nov, 2023
Journal
High deposition rate additive manufacturing (AM) processes with minimal feedstock costs are desirable to reduce part fabrication times and minimize the cost of implementation. Wire-based AM processes meet these demands but suffer from higher heat inputs that can lead to thermal distortion and large heat-affected zones neighboring the melt pools. Here, the tensile deformati…
Jan, 2023
Journal
Solid-state Friction Stir Additive Manufacturing has recently gained attention as a result of its capacity to fabricate large-scale parts while preserving the mechanical properties of the feedstock material. However, the correlation between the quality of layer-by-layer bonding of the deposited metal and processing parameters has remained unknown. Neutron imaging technique…