Fatigue durability of steels of railroad wheels

被引：7

作者：

Ostash, O. P. ^{[1
]}

Andreiko, I. M. ^{[1
]}

Kulyk, V. V. ^{[1
]}

Uzlov, I. H. ^{[2
]}

Babachenko, O. I. ^{[2
]}

机构：

[1] Ukrainian Acad Sci, Karpenko Physicomech Inst, Lvov, Ukraine

[2] Ukrainian Acad Sci, Nekrasov Inst Ferrous Metallurgy, Dnepropetrovsk, Ukraine

来源：

MATERIALS SCIENCE | 2007年 / 43卷 / 03期

关键词：

Fatigue; Fatigue Threshold; Prefracture Zone; Wheel Steel; Railroad Wheel;

D O I：

10.1007/s11003-007-0046-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

On the basis of the characteristics of strength, hardness, and fatigue failure resistance, we substantiate the possibility of replacement of the railroad wheels of current production by the developed high-strength wheels. We have revealed an ambiguous influence of the structure and strength level on the fatigue behavior of wheel steels depending on the presence or absence of crack-like defects in their structure. For eliminating this ambiguity, it is proposed to evaluate the endurance of steels with regard for the structural-mechanical parameter (d*). Using the Kitagawa-Takahashi diagram, we predict the safe size of a defect (the diameter of a destroyed inclusion) 2a(0) = d* = 126-186 mu m under cyclic loading. Furthermore, the influence of the sizes of technological defects (of diameter up to 3 mm) on the fatigue characteristics of steels of railroad wheels has been evaluated. We have established that a decrease in the permissible size of technological defects from 3.0 to 1.5 mm will increase two to three times the fatigue durability of wheels.

引用

页码：403 / 414

页数：12

共 24 条

[1]

ANDREIKO IM, 2006, MASHYNOZNAVSTVO, P21

[2]

ANDREIKO IM, 2003, FIZ KHIM MEKH MATER, V39, P111

[3]

ARGON AS, 1972, CORROSION FATIGUE CH, V2, P176

[4]

CASTAGNE JL, 1970, P INT C PROD APPL CL, P221

[5]

GANSER HP, 2005, P 11 INT C FRACT TUR

[6]

Klesnil M., 1980, Fatigue of metallic materials

[7]

Kuhn P, 1952, NASA Tech Note 2805

[8]

Kuslitskii A. B., 1976, NONMETALLIC INCLUSIO

[9]

Neuber H., 1946, THEORY NOTCH STRESS

[10]

Ostash OP, 1999, FATIGUE FRACT ENG M, V22, P161, DOI 10.1046/j.1460-2695.1999.00098.x

← 1 2 3 →