High rate material behaviour at hot forming conditions |
| |
Authors: | Lothar W Meyer Corinna Kuprin Thorsten Halle |
| |
Affiliation: | (1) Institute of Materials and Impact Engineering, Chemnitz University of Technology, Erfenschlager Str. 73, 09125 Chemnitz, Germany |
| |
Abstract: | Modern processes of hot forming use very high strain rates and large, mostly incrementally applied strains. For the simulation
of such forming processes relevant material data are needed, which have to be recorded under accordant forming conditions.
This places extraordinary demands on the experimental technique, because high temperatures, high strain rates and large strains
have to be implemented simultaneously. In the following contribution such an aligned experimental technique is introduced.
In order to apply a very large range of strain rate, compression tests are performed using different technical equipment up
to a drop tower and Hopkinson pressure bar. To reach large plastic strains, a hot torsion test was developed, which allowed
true plastic shear strains up to 10 at strain rates in the order of 100 1/s at hot forming temperatures. |
| |
Keywords: | Hot forming Dynamic testing Recrystallisation Large strains Torsion testing |
本文献已被 SpringerLink 等数据库收录! |
|