Influence of cold rolling and strain rate on plastic response of powder metallurgy and chemical vapor deposition rhenium |
| |
Authors: | B J Koeppel G Subhash |
| |
Affiliation: | (1) Pacific Northwest National Laboratories, 99352 Richland, WA;(2) Present address: the ME-EM Department, Michigan Technological University, 49931 Houghton, MI |
| |
Abstract: | The plastic response of two kinds of rhenium processed via powder metallurgy (PM) and chemical vapor deposition (CVD) were investigated under uniaxial compression over a range of strain
rates. The PM rhenium, further cold rolled to 50 and 80 pct of the original thickness, was also investigated to assess the
influence of cold work on the plastic behavior. A strong basal texture was detected in all the preceding materials as a result
of processing and cold work. Both CVD and PM rhenium exhibited an increase in yield strength and flow stress with increasing
strain rate. In PM rhenium, cold work resulted in an increase in hardness and yield strength and a decrease in the work hardening
rate. The deformed microstructures revealed extensive twinning in CVD rhenium. At large strains, inhomogeneous deformation
mode in the form of classical cup and cone fracture was noticed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|