High strain rate deformation of Mo and Mo-33re by shock loading: Part I. Substructure development
Document Type
Article
Publication Date
5-1985
Department
Department of Materials Science and Engineering
Abstract
The details of substructure development in Mo and Mo-33Re deformed at ultrahigh strain rates by shock loading have been studied quantitatively with optical, electron optical, and X-ray diffraction techniques. The finite rates of dislocation generation, apparently limited to rates of the order of 10 21 m-2 s-1, cause shock-induced dislocation densities to decrease at short shock pulse durations for a constant shock pulse amplitude. Similarly, the volume fraction of deformation twins in Mo-33Re also decreases at short pulse durations. Twin thicknesses were found to be 32 nm and 200 nm for Mo-33Re and Mo, respectively, with these thicknesses independent of pulse duration. Measurements of the dislocation loop densities support the concept of loop formation by a dislocation mechanism, rather than through the agglomeration of shock-induced excess point defects.
Publication Title
Metallurgical Transactions A
Recommended Citation
Wright, R.,
&
Mikkola, D.
(1985).
High strain rate deformation of Mo and Mo-33re by shock loading: Part I. Substructure development.
Metallurgical Transactions A,
16(5), 881-890.
http://doi.org/10.1007/BF02814839
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4523