Conclusions
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1.
Lowering the temperature from 20 to −140°C produces an increase in strength and a reduction in ductility of low-carbon steels during low-endurance fatigue. At the same time the ability of such steels to resist deformation and fracture increases.
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2.
The endurance of low-carbon steels in the temperature range investigated is controlled by cyclic creep phenomena; to estimate it at any given temperature, it is sufficient to know three values; the reserve of ductility of the material εf, the rate at which it is exhausted V, and the extent ξ to which the reserve of ductility has been exhausted during the steady-state creep.
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Literature Cited
A. P. Ruble' and V. A. Strizhalov, “Apparatus for investigating low-endurance fatigue of alloys at low climatic temperatures under pulse tensile loads,” Probl. Prochnosti, No. 7 (1974).
V. A. Strizhalov, “Investigation of the laws of the transition from quasi-static to fatigue fracture of light alloys during low-endurance fatigue,” Probl. Prochnosti, No. 5 (1974).
E. Yanke, F. Emde, and F. Lesh, Special Functions [Russian translation], Nauka, Moscow (1968).
Additional information
Institute of Strength of Materials, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Problemy Prochnosti, No. 1, pp. 11–15, January, 1976.
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Strizhalo, V.A., Rubel', A.P. Low-endurance fatigue of low-carbon steels at low (climatic) temperatures. Strength Mater 8, 8–12 (1976). https://doi.org/10.1007/BF01528204
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DOI: https://doi.org/10.1007/BF01528204