Estimation of ultimate state of metal structures exploited in the environment of the extreme north

被引：5

作者：

Ivanov, A. R. ^{[1
]}

Bolshakov, A. M. ^{[1
]}

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

机构：

[1] Russian Acad Sci, Inst Phys Technol Problems N, Siberian Branch, Yakutsk, Russia

来源：

INORGANIC MATERIALS | 2010年 / 46卷 / 14期

关键词：

Cementite; Structural Steel; Metal Structure; Correlation Dependence; Ultimate State;

D O I：

10.1134/S0020168510140177

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A method is described for estimating the ultimate state of structural materials in terms of variations of microhardness. The method includes investigations of the effect of low temperatures on the strength of cracked specimens made of grade 16G2SAF steel, as well as tests on low-cyclic fatigue of specimens made of grade 15 steel. After cyclic stressing, the specimens are exposed to uniaxial extension up to destruction, and then the microhardness is measured on the specimen fracture. Then the ultimate curve of elasticity losses is plotted, from which the coefficient of elasticity loss is determined. The curve of microhardness as a function of coefficient of elasticity loss is used for estimation of the ultimate state of a material.

引用

页码：1564 / 1566

页数：3