Dinner
Starts 6:00 pm, Networking 5:30 pm
Speaker
7:00 pm
This
is a Buffet, Price is $12 collected by Treasurer
China
Garden Buffet, Airway Shopping Center
Tell
them you are here for the ASM meeting
We
have our own private room in the back
Casey
Holycross is a graduate student at Wright State University and member of the
Dayton Chapter of ASM International. He
has been working in the Propulsion Directorate of the Air Force Research
Laboratory at Wright-Patterson for the past several years as a co-op student,
with a research focus on metals fatigue.
Recently, he has successfully defended his master’s thesis entitled A
Critical Assessment of the High Cycle Bending Fatigue Behavior of
Boron-modified Ti-6Al-4V. Beginning
this fall, he will begin a PhD program in Aerospace Engineering at the Ohio
State University.
Boron-modified
titanium alloys have increased strength and stiffness when compared to
unmodified alloys without a sacrifice in ductility or increase in density.
These attractive properties are attributed to small additions of boron that
refine the microstructure and form strong, stiff TiB whiskers. This study
investigates the influence of TiB on fatigue strength and microstructural
damage under cyclic loading of a powder-metallurgy forging with nominal
composition Ti-6Al-4V-1B. Fully-reversed bending data from the testing of flat
plate fatigue samples using a vibration based step test method is presented.
This method simulates fatigue failure modes for high speed turbomachinery more
accurately and produces high cycle fatigue results much faster than traditional
tensile testing methods. Results are compared with data generated in a similar
fashion for Ti-6Al-4V, as well as traditional methods. Additionally, failure
mode and damage characteristics were identified using fractographic analysis.