Date of Award
2024
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical and Aerospace Engineering
Committee Chair
Judith Schneider
Committee Member
Nathan Spulak
Committee Member
Joseph Sims
Committee Member
Paresh Samantaray
Research Advisor
Judith Schneider
Subject(s)
Additive manufacturing, Dispersion strengthening, Copper alloys--Mechanical properties
Abstract
GRCop-42 is a dispersion strengthened copper alloy of interest due to its high thermal conductivity. Since it is fabricated as a powder, it is adaptable to powder based, metal additive manufacturing (AM) processing. The chromium-niobium additives phase separate from the copper matrix and form strengthening dispersoids during the gas atomization process used to produce the powder. This study looks at the effect of the powder based, laser powder bed fusion (L-PBF) AM processing parameters on the resulting microstructure and mechanical properties. Builds were obtained from five different vendors, deposited using their best practice, for metallurgical and mechanical property evaluation. By comparing the size, morphology, and distribution of the dispersoids with the resulting mechanical properties, the consistency of the process across multiple platforms can be evaluated. This information is critical for establishing standards for the material properties in metal AM parts of GRCop-42.
Recommended Citation
Walker, Elaina, "Evaluating the effects of L-PBF printing parameters on the microstructure and mechanical properties of GRCop-42" (2024). Theses. 656.
https://louis.uah.edu/uah-theses/656