Surface Layer Structure Degradation of Rails in Prolonged Operation

被引：5

作者：

Gromov, V. E. ^{[1
]}

Peregudov, O. A. ^{[1
]}

Ivanov, Y. F. ^{[2
,3
]}

Morozov, K. V. ^{[1
]}

Alsaraeva, K. V. ^{[1
]}

Semina, O. A. ^{[1
]}

机构：

[1] Siberian State Ind Univ, Novokuznetsk 654007, Russia

[2] Russian Acad Sci, Inst High Current Elect, Siberian Branch, Tomsk 634055, Russia

[3] Natl Res Tomsk Polytech Univ, Tomsk 634050, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION | 2016年 / 10卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

structure; defect substructure; rails; electron microscopy; degradation;

D O I：

10.1134/S1027451015060282

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By methods of optical, scanning and transmission electron microscopy and microhardness measurement the transformation regularities of structure-phase states, defect substructure, fracture surface and mechanical properties of rail surface layer up to 10 mm deep in process of long-term operation (passed tonnage of gross weight 1000 mln. tons) were revealed. According to the character of fracture and level of structure imperfection the three layers were detected: surface, transition and boundary ones. It has been shown that the surface layer similar to 20 mu m in thickness has a multiphase, submicro- and nanocrystalline structure and it contains micropores and microcracks. The increased density of bend extinction contours at 2 mm depth from the tread contact surface was noted, and it was shown that the maximum amplitude of stress fields was formed on the interphase boundary the globular cementite particle-matrix. The evaluation of stress fields was done.

引用

页码：76 / 82

页数：7

共 18 条

[11] Ivanisenko Y, 2007, MATER SCI FORUM, V539-543, P4681, DOI 10.4028/www.scientific.net/MSF.539-543.4681
[12] Koneva N., 1982, RUSS PHYS J, P3
[13] Atomic-scale mechanisms of deformation-induced cementite decomposition in pearlite
Li, Y. J.
Choi, P.
Borchers, C.
Westerkamp, S.
Goto, S.
Raabe, D.
Kirchheim, R.
[J]. ACTA MATERIALIA, 2011, 59 (10) : 3965 - 3977
[14] Tensile properties and work hardening behaviors of ultrafine grained carbon steel and pure iron processed by warm high pressure torsion
Ning, Jiang-li
Courtois-Manara, Eglantine
Kurmanaeva, Lilia
Ganeev, Artur V.
Valiev, Ruslan Z.
Kuebel, Christian
Ivanisenko, Yulia
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 581 : 8 - 15
[15] Panin V. E., 1985, STRUCTURAL LEVELS DE
[16] Rybin V.V., 1986, LARGE PLASTIC DEFORM
[17] Wear of rails. A review of the American press
Sheinman, E.
[J]. JOURNAL OF FRICTION AND WEAR, 2012, 33 (04) : 308 - 314
[18] Shur E. A., 2012, FAILURE OF RAILS

← 1 2 →