Influence of High-Temperature Annealing on the Resistance to High Strain Rate and Fracture of Tantalum at Temperatures of 20 and 500°C
- Authors: Garkushin G.V.1, Savinykh A.S.1, Razorenov S.V.1, Kanel G.I.2
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Affiliations:
- Institute of Problems of Chemical Physics, Russian Academy of Sciences
- Joint Institute of High Temperatures, Russian Academy of Sciences
- Issue: Vol 64, No 5 (2019)
- Pages: 674-679
- Section: Physical Science of Materials
- URL: https://journals.rcsi.science/1063-7842/article/view/203419
- DOI: https://doi.org/10.1134/S1063784219050074
- ID: 203419
Cite item
Abstract
Two series of shock-wave experiments have been conducted in order to measure the Hugoniot elastic limit and determine the strain rate dependence of critical fracture stress for tantalum experiencing spall fracture. Tantalum specimens have been preannealed in vacuum at 1000°C. The evolution of elastoplastic compression shock waves at room and elevated up to 500°C temperatures has been presented from complete wave profiles recorded by a VISAR laser Doppler velocimeter. The spall strength dependence on the strain rate during the expansion of the material in a rarefaction wave has been determined.
About the authors
G. V. Garkushin
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Author for correspondence.
Email: garkushin@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432
A. S. Savinykh
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: garkushin@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432
S. V. Razorenov
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: garkushin@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432
G. I. Kanel
Joint Institute of High Temperatures, Russian Academy of Sciences
Email: garkushin@ficp.ac.ru
Russian Federation, Moscow, 125412