Date of Award
2009
Publication Type
Master Thesis
Degree Name
M.A.Sc.
Department
Mechanical, Automotive, and Materials Engineering
Keywords
Applied sciences
Supervisor
Derek O. Northwood
Supervisor
Randy J. Bowers
Rights
info:eu-repo/semantics/openAccess
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Abstract
Nitrocarburizing is a thermochemical diffusion process that has been proposed as an alternative to carbonitriding to improve the surface characteristics of automotive components without producing unacceptable part distortion. In this study, gas, ion and vacuum ferritic nitrocarburizing using various heat treatment schedules were investigated and compared with a current carbonitriding procedure. Dimensional distortion and residual stresses in Navy C-Rings and torque converter pistons resulting from each treatment process were evaluated. The microstructure and microhardness, as well as the phase composition of the specimens, were also characterized.
The results of this study indicated that the nitrocarburizing process utilizing suitable heat treatment procedures gave rise to smaller size and shape variations in specimens than carbonitriding. However, given the tensile surface residual stresses induced by nitrocarburizing, additional wear testing needs to be carried out to confirm the possibility of replacing the current carbonitriding process with an appropriate ferritic nitrocarburizing procedure.
Recommended Citation
Nan, Chunyan, "Ferritic nitrocarburizing process development for minimization of distortion" (2009). Electronic Theses and Dissertations. 7918.
https://scholar.uwindsor.ca/etd/7918