Faculty Advisor

DiBiasio, David

Faculty Advisor

Sisson, Richard D.


In an effort to more accurately predict diffusion kinetics of oxygen into titanium during heat-treatment, the Wyman-Gordon Company commissioned this study to obtain an accurate rate of alpha case formation within titanium and to investigate the use of coatings to reduce alpha case formation. This project consisted of heat-treating Ti-6Al-4V and Ti-6Al-4V ELI samples that were uncoated, coated with an SJ, and SJ advanced coating over a period of time consistent with their heat-treatment cycle. These samples were analyzed through optical microscopy and microhardness to determine alpha case depth. The project concluded with a cost analysis, which aimed to find the most economic and optimal solution to reducing alpha case formation.


Worcester Polytechnic Institute

Date Accepted

April 2010


Chemical Engineering

Project Type

Major Qualifying Project



Advisor Department

Chemical Engineering

Advisor Department

Mechanical Engineering