Structure and Properties of Lengthy Rails after Extreme Long-Term Operation.

Format:

Book

Author/Creator:

Yuriev, A. A.

Series:

Materials Research Foundations

Materials Research Foundations ; v.106

Language:

English

Subjects (All):

Railroad rails.

Steel.

Steel, High strength.

Physical Description:

1 online resource (193 pages)

Edition:

1st ed.

Place of Publication:

Millersville : Materials Research Forum LLC, 2021.

Summary:

The long-term operation of rails has been studied.

Contents:

Intro

Table of Contents

Introduction

1. Evolution of Structure and Properties of Rails During Operation

1.1 Structural-phase state and properties of rails during long-term operation

1.1.1 Influence of various factors

1.1.2 Formation of nanostructures

1.1.3 White layer on the rolling surface of the rails

1.1.4 Structure and properties of body-hardened worn rails

1.2 Simulation of processes during operation of rails and megaplastic deformation

Conclusion

2. Material and Methods of Research

2.1 Research material

2.2 Methods for studying the structure

2.2.1 Macro and microstructural studies

2.2.2 X-ray structural studies

2.2.3 Electron microscopic examination

2.3 Methods for determining mechanical properties

3. Differentially Hardened Rails: Structure, Phase Composition, and Dislocation Substructure

4. Evolution of the Structure and Properties of the Metal of Differentially Hardened Rails in the Process of Operation

4.1 Assessment of the quality of differentially hardened rails

4.1.1 Chemical composition of rail steel

4.1.2 Mechanical properties of rail steel

4.1.3 Macrostructure of rail steel

4.1.5 Microstructure of rail steel after operation [2, 123]

4.2 Phase composition and defective substructure of differentially hardened rails after operation [141-146]

4.3 Gradients of the structural-phase state of steel, formed as a result of the operation of rails [150]

4.4 Transformation of the structure of lamellar pearlite of steel during long-term operation of rails [155, 156]

5. Carbon Re-Distribution in the Structure of Rail Steel after Long-Term Operation

6. Physical Nature of Hardening of Metal of Differentially Hardened Rails in the Process of Long-Term Operation.

6.1 Evolution of mechanical, tribological properties, macro- and microstructure of the surface layer of metal of differentially hardened rails during long-term operation

6.2 Phase composition and defective metal substructure of differentially hardened rails during long-term operation

6.3 Physical nature of rail metal hardening during long-term operation

6.4 Mechanisms for strengthening the metal of rail steel

7. Structural and Phase State of Rails after the Hauled Load of 1411 Million Gross Tons

7.1 Structure of rail metal at macro and micro levels

7.2 Metal structure of rails at submicro- and nanoscale

7.3 Gradient of the rail metal structure after the hauled load of 1,411 million gross tons

8. Physical Nature of Strengthening of Rail Metal after Extremely Long Operation

8.1 Impact strength and hardness

8.2 Microhardness

8.3 Tribological tests of steel

8.4 Physical nature of metal hardening during extremely long-term operation

8.5 Comparative analysis of the structural-phase state and hardening mechanisms at the yield point after the hauled load of 691.8 and 1411 million gross tons

About the authors

References.

Notes:

Description based on publisher supplied metadata and other sources.

ISBN:

1-64490-147-1

OCLC:

1255221512