ISSN:
1573-9325
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The influence of strain rate on the features of interrupted flow of alloys for cryogenic technology at the boiling point of liquid helium (4.2 K) was investigated. The specimens were tested with strain rates of 0.28·10−3, 0.28·10−2, 0.56·10−2, 0.83·10−2, 0.14·10−1, and 0.28·10−1 sec−1. It was shown that an increase in rate within these limits leads to a change in the character of deformation of the investigated alloys, which is determined by the power of the heat flow formed as the result of plastic deformation and dependent upon strain rate V and the amount of the jumps in stresses Δσmax. The relationship established of the character of spasmodic deformation to loading conditions is an indication of the necessary of taking this factor into consideration in evaluation of the strength of structures under conditions of extreme cooling.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00774971
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