The next chapter meeting will take place
on January 18, 2012 at the Engineers Club, (110 East Monument Avenue)
Dayton, OH 45402-1278, (937) 228-2148
This is a Joint meeting with AWS-Dayton
and ASM-Cincinnati. Please join me in welcoming members of our fellow
professional organizations to this meeting.
Please join me in congratulating Mr.
William Chick, Dr. Allan Katz, and Mr. Walter Zimmer. They have been
recognized as Life Members by ASM-International.
Raghu Srinivasan
Chair, Dayton Chapter, ASM-International
Agenda
5:30 – 6:00 PM Executive Committee Meeting (ASM-Dayton Exec committee members)
6:00 – 7:00 PM Social and Buffet Dinner
7:15 – Presentation by Mr. David Mahaffey,
Air Force Research Laboratory
Cost: $25 (Material Advantage students free) + Cash bar
RSVP: Daniel.Young@wright.edu,
937-775-5027 by Wednesday January 11, 2012
Title: Solid State Joining of Nickel
Base Superalloys
Speaker: Mr. David Mahaffey
Materials and Manufacturing Directorate
Air Force Research Laboratory
Abstract
Nickel base superalloys are widely used
in aerospace propulsion applications due to their creep and high temperature
strength properties. The Air Force Research Laboratory is interested in
combining dissimilar materials to produce composite graded structures with
improved mechanical performance. This presentation will provide information
on the combination of different nickel alloys using inertia and friction weld
techniques. This includes the joining of low solvus-high refractory
(LSHR) powder metallurgy alloy with MARM247 equiaxed cast alloy.
Characterization of the relevant phases and weld zones will be discussed
including EBSD and microhardness results of the thermal mechanically effected
zone.
Bio
Dave Mahaffey graduated from Illinois
Institute of Technology with a BS in Metallurgical and Materials Engineering,
and earned a Master of Science in Materials Science and Engineering from The
Ohio State University. He has 14 years of experience working as a
materials engineer and program manager on various aerospace materials related
research programs. He is currently employed at the Air Force
Research Laboratory where he is working on the application of solid state
joining processes for high temperature propulsion materials. In addition,
he is currently completing his PhD in Industrial and Systems Engineering at The
Ohio State University.