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Review of Specimen Heating in Mechanical Tests at Cryogenic Temperatures

Author:
Ogata, T.  Yuri, T.  Ono, Y.  


Journal:
ADVANCES IN CRYOGENIC ENGINEERING, VOL 60


Issue Date:
2014


Abstract(summary):

At cryogenic temperatures near 4 K, a discontinuous deformation produces a large amount of specimen temperature rise that might bring significant changes in mechanical properties. The authors measured the specimen heating in tensile tests, fatigue test, and other tests in liquid helium for stainless steels and other materials. In this paper, we have measured the specimen temperature in high-cycle and low-cycle fatigue tests for stainless steels at various frequencies and stress levels and evaluated the testing conditions to keep the specimen at a specified temperature. We proposed maximum frequency in load-controlled fatigue tests for specified loading variables and a maximum strain rate in strain-controlled fatigue tests.


Page:
86---91


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