Date of Award
2016
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
Stephen A. Hackney
Committee Member 1
Stephen L. Kampe
Committee Member 2
Peter D. Moran
Committee Member 3
Ravindra Pandey
Abstract
The purpose of this project is to produce Nd rich core-Dy rich shell grain structure in liquid phase sintered alloys by consolidating Dy rich powder mixed with powder. The technical barrier to producing the core-shell microstructure is that the Dy composition variations will homogenize during the consolidation process. This dissertation is based on the hypothesis that compositional homogenization of the core-shell structure can be minimized if consolidation occurs under applied pressure (hot press liquid phase sintering). The hypothesis is tested by comparing the homogenization of the Dy composition to the degree of consolidation with and without applied pressure. It is demonstrated that Nd rich core-Dy rich shell grain structure can be produced using the hot press approach. A simple linear model is used to identify the critical processing parameters involved in the successful development of the requisite core-shell structure.
Recommended Citation
Chen, Li, "Nd2Fe14B: (Nd1-x Dyx)2 Fe14B CORE-SHELL STRUCTURE FORMATION BY HOT PRESS LIQUID PHASE SINTERING", Open Access Master's Thesis, Michigan Technological University, 2016.