Influence of Strain Rate on Heat Release under Quasi-Static Stretching of Metals. Experiment

The paper presents the results of experimental studies of energy dissipation during a quasi-static stretching of metals and alloys at room temperature. The strain rates varied in the range of 10 –3 –10 –2 s –1 . Samples of M1 copper, AZ31B magnesium alloy, BT6 titanium, 12Cr18Ni10Ti steel, and D16AM...

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Bibliographic Details
Published in:Physics of the solid state 2018-04, Vol.60 (4), p.758-763
Main Authors: Zimin, B. A., Sventitskaya, V. E., Smirnov, I. V., Sud’enkov, Yu. V.
Format: Article
Language:English
Subjects:
Alloys
ALUMINIUM ALLOYS
Aluminum base alloys
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER
CORRELATIONS
Energy dissipation
ENERGY LOSSES
HEAT
MAGNESIUM ALLOYS
Magnesium base alloys
Mechanical Properties
Physics
Physics and Astronomy
Physics of Strength
Plastic flow
PLASTICITY
Solid State Physics
STEELS
STRAIN RATE
STRAINS
STRESSES
Stretching
TEMPERATURE RANGE 0273-0400 K
TITANIUM
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Summary:The paper presents the results of experimental studies of energy dissipation during a quasi-static stretching of metals and alloys at room temperature. The strain rates varied in the range of 10 –3 –10 –2 s –1 . Samples of M1 copper, AZ31B magnesium alloy, BT6 titanium, 12Cr18Ni10Ti steel, and D16AM aluminum alloy were analyzed. The experimental results demonstrated a significant dependence of the heat release on the strain rate in the absence of its influence on stress–strain diagrams for all the metals studied in this range of strain rates. The correlation of the changes in the character of heat release with the processes of structural transformations at various stages of plastic flow is shown on the qualitative level. A difference in the nature of the processes of heat release in materials with different ratios of the plasticity and strength is noted.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783418040352