|
 |
 |
 |
Ms. Adams-Hughes tells of the experience in her own words. “It was indeed a pleasure to be granted the opportunity to attend the SECTAM XXII Conference. It is the first time that I was able to present my work at a conference. Presenting at the conference was a welcomed challenge and I was able to learn a lot about other researches that is being conducted in the area of Materials. It was quite an interesting and motivating experience. Earning 2nd place in the PhD. Student Competition was just the icing on the cake.”
Although Friction Stir Processing (FSP) is fast becoming
a formidable method for fabricating materials, little is known of the
microstructural evolution associated with this technique. This research
was aimed at providing a comprehensive characterization of FSP microstructure
and texture using Orientation Imaging Microscopy (OIM).
M. Adams-Hughes, et al., In Proc. 22nd Southeastern
Conference on Theoretical and Applied Mechanics (SECTAM), Tuskegee,
AL
GRCop-84 is a ternary Cu-Cr-Nb alloy with promising potentials for aerospace applications due to its excellent mechanical and thermal properties at both high and low temperatures. Rocketdyne, Pratt and Whitney and Aerojet have selected GRCop-84 for use in their next generation rocket engines. In order to optimize the properties of this material, it is important to develop a comprehensive understanding of the effect of the initial powder size on the properties. Working in conjunction with NASA, we at FAMU have found that there exists a critical powder size over which powder size does not have effect on mechanical properties.
C. L. Okoro, et al., In Proc. 22nd Southeastern Conference on Theoretical and Applied Mechanics (SECTAM), Tuskegee, AL
Fabrication of conductor wires for pulsed magnets usually involve low temperature annealing if re-bundling of drawn wires is employed. This research work between FAMU and CMU was aimed at providing a better understanding of the effect of low temperature annealing (170°C) on the recrystallization behavior of heavily drawn OFHC copper. Using Orientation Imaging Microscopy (OIM), it was found that the wires were partially recrystallized, and the microstructure was characterized by laterally (Type ‘A’) and axially (Type ‘B’) growing grains. The Type ‘A’ grains were attributed to the high frequency of the mobile boundaries with misorientations in the 40° - 50° range. Orientation pinning due to immobile boundaries, especially twin boundaries (?3), were found to be the main cause for the axial and lateral growth.
OIM inverse pole figure (IPF) map showing recrystallized grains parallel to drawing direction (DD). Arrow points in DD D Waryoba, P. N. Kalu and A. D. Rollett,
Metall. Mater. Trans. A, Accepted for publication, 2004
|
Ms.
Michelle Adams-Hughes, one of our PREM fellows and a Ph.D. Candidate
in the Mechanical Engineering Department at the FAMU- FSU College of
Engineering, recently attended the 22nd Southeastern Conference on Theoretical
and Applied Mechanics (SECTAM XXII) at Tuskegee University in Tuskegee,
Alabama. She presented some of her research results in the Ph.D. Student
Paper Competition along with twenty-eight other Ph.D. students. We are
pleased to announce that Ms. Adams-Hughes won second place in that competition
and was awarded a plaque of commendation as well as a monetary prize
of four hundred dollars ($400.00).
