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Liquid Impingement Erosion Performance of Low Plasticity Burnished Ti6Al4V

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Liquid Impingement Erosion Performance of Low Plasticity Burnished Ti6Al4V

Ma, Dina (2014) Liquid Impingement Erosion Performance of Low Plasticity Burnished Ti6Al4V. Masters thesis, Concordia University.

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Abstract

Abstract

In power generation industry, inlet fog cooling is used for the turbine inlet cooling (TIC). However, this approach also leads to liquid impingement erosion (LIE) of the rotating blades in the compressor, resulting in performance degradation and reduction of service life of gas turbines.
Previous studies have introduced Laser shock peening (LSP) and shot peening (SP) as potential solutions for LIE of Ti64. However, no study has been done on the LIE performance of the low plasticity burnished Ti64.
Full factorial design of experiments was conducted to investigate the effects of LPB process parameters (Feed Rate, Spindle Velocity, Number of Passes, Pressure) on the residual stress distribution, microhardness and surface roughness of Ti64. The surface microhardness and the surface roughness of the Ti64 were improved after the LPB treatment. Moreover, a large magnitude of compressive residual stress layer was induced by LPB treatment on the surface of the Ti64. However, the results of the LIE tests showed that LPB treatment has little or no effect on the LIE performance of Ti64.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Ma, Dina
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical Engineering
Date:25 June 2014
Thesis Supervisor(s):Medraj, M. and Pugh, M.
ID Code:978755
Deposited By: DINA MA
Deposited On:04 Nov 2014 17:11
Last Modified:18 Jan 2018 17:47
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