Influence of High-Temperature Annealing on the Resistance to High Strain Rate and Fracture of Tantalum at Temperatures of 20 and 500°C

Journal Article · Wed May 15 00:00:00 EDT 2019 · Technical Physics

DOI:https://doi.org/10.1134/S1063784219050074· OSTI ID:22927697

Savinykh, A. S.; Razorenov, S. V. ^[1]; Kanel, G. I. ^[2]

---

1. Institute of Problems of Chemical Physics, Russian Academy of Sciences (Russian Federation)
2. Joint Institute of High Temperatures, Russian Academy of Sciences (Russian Federation)

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.

• OSTI ID: 22927697
• Journal Information: Technical Physics, Journal Name: Technical Physics Journal Issue: 5 Vol. 64; ISSN 1063-7842
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
COMPRESSION
FRACTURES
LASER DOPPLER ANEMOMETERS
SHOCK WAVES
STRAIN RATE
STRESSES
TANTALUM
VELOCIMETERS