Effect of the form and degree of plastic deformation on the mechanical properties of high-strength tubes with low-temperature thermomechanical treatment

Autor: Chernyak, N. I., Radchenko, R. P., Gavrilov, D. A., Pryadko, E. I., Shapovalova, I. A.
Zdroj: Strength of Materials; April 1976, Vol. 8 Issue: 4 p434-437, 4p
Abstrakt: Conclusions 1.The strength characteristics of 25.5-mm-diam. high-strength tubing made by low-temperature thermomechanical treatment have lower values in the direction transverse to rolling than those obtained in the longitudinal direction and are determining in rating the strength of tubular parts in general. As a result and taking into consideration the loading conditions of tubing in service, for a rapid method of inspecting the quality of high-strength tubing it would be desirable to test tubular samples by loading them with internal pressure.2.For the purpose of providing increased tubing strength in the transverse direction it is necessary to choose low-temperature thermomechanical treatment methods characterized by a low degree of thinning of the wall and a large degree of reduction in diameter. An increase in the wall thickness during rolling is undesirable. To provide increased tubing strength in the longitudinal direction the low-temperature thermomechanical treatment methods must be distinguished by a low degree of reduction in diameter and a quite high degree of thinning. In order to provide uniformity of strength in the tubing it is necessary to use the methods used for producing the 35- and 38-mm-diam. tubing.
Databáze: Supplemental Index
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