Project Presentation Day 2006
Mechancial Engineering Department
Materials Science and Engineering
April 18, 2006
Phase Transformations in Ni-B Coating
Jonathan Longabucco, Courtney Nowill
The goal of this project was to determine the microhardness values of electroless Ni-B coating during isothermal heat treatments. The test matrix ranged from 200 C to 1000 C for various times. X-ray diffraction was used to determine the ratio of Ni to Ni3B in each sample. After the formation of Ni3B precipitate, microhardness values increased by a maximum of 425 knoop. These procedures determine the time necessary at each temperature to obtain peak microhardness values.
Advisor: Prof. Richard D. Sisson, Jr.
This project was sponsored by UCT Coatings, Inc.
Microstructural Effects of Flash Temperature
Exposure
on
IN100
Winning Entry
Lauren Gray, Kerri Mongelli, Katrina Woschanko
The goal of this project was to determine the microstructural effects
of flash fires on rotor disk material IN 100. An oxy-acetylene torch was
used to heat samples for periods of time ranging from one to thirty
minutes to simulate flash fire conditions. Temperatures upwards of 950 C
were achieved. These conditions caused migration of the y' phase to grain
boundaries, surface oxide formation, a layer of bulk material
devoid
of y'
near the surface, and coarsening of y'particles.
Advisor: Prof. Richard D. Sisson, Jr.
This project was sponsored by Pratt & Whitney.
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