Creep of Tubes under External Pressure

被引：0

作者：

Vorob'ev, E. E. ^{[1
,2
]}

Peregud, M. M. ^{[1
]}

Khokhunova, T. N. ^{[1
]}

Mileshkina, O. Yu ^{[1
]}

Bekrenev, S. A. ^{[1
]}

Markelov, V. A. ^{[1
]}

Shtremel, M. A. ^{[2
]}

机构：

[1] AO VNIINM, Moscow 123060, Russia

[2] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

来源：

RUSSIAN METALLURGY | 2019年 / 2019卷 / 10期

关键词：

creep in tubes; E110; alloy; external pressure;

D O I：

10.1134/S0036029519100392

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

29 tubes made of an E110 alloy for VVER and PWR reactors are subjected to creep tests under external pressure (temperature of 350 and 380 degrees C, circumferential stress of 70-130 MPa, holding time up to 4250 h). Creep is found to be accelerated after deformation up to 0.9% and ovality up to b/a = 0.86 and is ended in the collapse of a tube. The equations of tube equilibrium and creep under pressure are generalized for tubes of any ovality (ellipses of any eccentricity). The solutions to these equations predict the presence of a general curve in the contour length-eccentricity coordinates and give tube instability conditions under pressure.

引用

页码：1112 / 1124

页数：13

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