Date of Award
2024
Document Type
Open Access Master's Thesis
Degree Name
Master of Science in Materials Science and Engineering (MS)
Administrative Home Department
Department of Materials Science and Engineering
Advisor 1
Paul Sanders
Committee Member 1
Stephen Kampe
Committee Member 2
Walt Milligan
Abstract
Recent sustainability efforts have reduced CO2 emissions from electricity generation by increasing operating temperatures and pressures in advanced ultra-supercritical (A-USC) power plants. However, the extreme operating conditions in these A-USC power plants require new high temperature materials. The recent study of nickel-based high-entropy alloys (HEA) represents the latest approach to meet the specifications for A-USC operations. A CALculation PHase Diagram (CALPHAD) driven Bayesian optimization method was used to design the composition of alloys composed of NiCrCoFe with V or W, which were fabricated via wire-based additive manufacturing to enable high throughput development. Although the alloy was designed to minimize solidification cracking, cracking was still observed in the alloy. This research seeks to examine the cracking mechanisms in HEA produced with wire additive manufacturing.
Recommended Citation
Walch, Andrew R., "SOLIDIFICATION CRACKING IN ADDITIVELY MANUFACTURED HIGH ENTROPY ALLOY NiCrCoFe WITH V OR W", Open Access Master's Thesis, Michigan Technological University, 2024.