Investigation on the microstructure and damage characteristics of wheel and rail materials subject to laser dispersed quenching
Source abstract
Abstract
Abstract Laser dispersed quenching (LDQ) forms isolated hardening zones distributed in a certain arrangement on the material surface. This study explores the microstructure, wear and rolling contact fatigue (RCF) of wheel and rail materials that have been treated by laser dispersed quenching. Through microstructure and surface hardness analysis, the optimum laser processing parameters of the wheel/rail materials are determined to be a laser power of 900 W and a laser quenching time of 0.6 s. Homogeneous martensite is obtained in the LDQ region of the wheel/rail rollers, and the surface hardness of the LDQ region significantly increases, which improves the wear resistance of wheel and rail materials. With an increase in LDQ spacing, the wear resistance and surface damage of the wheel/rail rollers deteriorate, and the optimum LDQ spacing is 0.3 mm. Severe spalling occurs on the surface of untreated wheel and rail rollers, while fatigue wear dominates in the LDQ region of the wheel and rail rollers. Meanwhile, small spalling is dominant in the substrate region between adjacent LDQ regions. Furthermore, the RCF life of wheel/rail rollers subject to LDQ is approximately 2 times that of untreated wheel/rail rollers under water condition.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metal Alloys Wear and Properties · Railway Engineering and Dynamics · Gear and Bearing Dynamics Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Very early stage rolling contact fatigue crack growth in pearlitic rail steels10.1016/j.wear.2010.10.004 ↗
2. Study on relationship between oblique fatigue crack and rail wear in curve track and prevention10.1016/j.wear.2008.12.100 ↗
3. Investigation on the damage mechanism and prevention of heavy-haul railway rail10.1016/j.engfailanal.2013.01.033 ↗
4. Investigation on wear resistance and fatigue damage of laser cladding coating on wheel and rail materials under the oil lubrication condition10.1080/10402004.2015.1107926 ↗
5. On the formation and damage mechanism of rolling contact fatigue surface cracks of wheel/rail10.1016/j.wear.2017.12.020 ↗
6. Rail grade dependent damage behavior-characteristics and damage formation hypothesis10.1016/j.wear.2013.11.029 ↗
7. The role of slip ratio in rolling contact fatigue of rail materials under wet conditions10.1016/j.wear.2016.12.049 ↗
8. Probabilistic prediction model for initiation of RCF cracks in heavy-haul railway10.1016/j.ijfatigue.2010.08.006 ↗
9. Full-scale testing of laser clad railway track; Case study-Testing for wear, bend fatigue and insulated block joint lipping integrity10.1016/j.wear.2017.02.023 ↗
10. The effect of silicon, vanadium and nitrogen on the microstructure and hardness of air cooled medium carbon low alloy steels10.1016/S0924-0136(02)01131-7 ↗
11. Enhancing impact fracture toughness and tensile properties of a microalloyed cast steel by hot forging and post-forging heat treatment processes10.1016/j.matdes.2012.11.051 ↗
12. Investigation on the behaviour of medium carbon and vanadium microalloyed steels by hot forging test10.1016/j.matdes.2013.04.102 ↗
13. Managing the critical wheel/rail interface
14. Pearlite in ultrahigh carbon steels: Heat treatments and mechanical properties10.1007/BF02647751 ↗
15. Investigation on microstructure and wear characteristic of laser cladding Fe-based alloy on wheel/rail materials10.1016/j.wear.2015.02.053 ↗
16. Investigation on wear and damage performance of laser cladding Co-based alloy on single wheel or rail material10.1016/j.wear.2015.03.002 ↗
17. The role of lanthanum oxide on wear and contact fatigue damage resistance of laser cladding Fe-based alloy coating under oil lubrication condition10.1016/j.triboint.2015.10.017 ↗
18. Effect of laser cladding on wear and damage behaviors of heavy-haul wheel/rail materials10.1016/j.wear.2014.01.011 ↗
19. Assessment of laser cladding as an option for repairing/enhancing rails10.1016/j.wear.2015.02.027 ↗
20. Improving rail wear and RCF Performance using laser cladding10.1016/j.wear.2016.05.011 ↗
21. Fatigue behaviour of Co-Cr laser cladded steel plates for railway applications10.1016/j.wear.2004.03.026 ↗
22. Mitigation of subsurface crack propagation in railroad rails by laser surface modification10.1016/S0257-8972(98)00487-3 ↗
23. Investigation of top of rail lubrication and laser glazing for improved railroad energy efficiency10.1115/1.1537745 ↗
24. Effect of laser quenching on wear and damage of heavy-haul wheel/rail materials10.1177/1350650113498327 ↗
25. Sliding wear behaviour of laser surface modified pearlitic rail steel10.1179/174329409X455458 ↗
26. Influence of the processing conditions on the abrasive wear behaviour of a laser surface melted tool steel10.1016/S1359-6462(99)00206-7 ↗
27. Structure of laser remelted surface of cast irons10.1179/026708400101517017 ↗
28. Effect of overlap pass tempering on hardness and fatigue behaviour in laser heat treatment of carbon steel10.1007/BF01729179 ↗
29. Rapid graphitization of a pulsed laser remelted ductile cast iron during multipass overlap melting10.1007/BF02649077 ↗
30. Development of residual stress and surface cracks in laser treated low carbon steel10.1016/0956-716X(91)90224-O ↗
31. Dot matrix hardening of steels using a fiber optic coupled pulsed Nd: YAG laser10.1080/10426919908914804 ↗
32. Discrete laser spot transformation hardening of AISI O1 tool steel using pulsed Nd: YAG laser10.1016/j.surfcoat.2011.05.016 ↗
33. Investigation on rolling sliding wear behavior of wheel steel by laser dispersed treatment10.1016/j.wear.2013.12.007 ↗
34. Influence of laser dispersed treatment on rolling contact wear and fatigue behavior of railway wheel steel10.1016/j.matdes.2013.08.041 ↗
35. A fracture mechanics model for the analysis of micro-pitting in regard to lubricated rolling–sliding contact problems10.1016/j.ijfatigue.2006.12.015 ↗
36. Rolling contact fatigue and wear of two different rail steels under rolling-sliding contact10.1016/j.ijfatigue.2015.10.012 ↗
37. Investigation on the effect of rotational speed on rolling wear and damage behaviors of wheel/rail materials10.1016/j.wear.2014.12.043 ↗
38. Effect of oil hydraulic pressure on surface crack growth in rolling/sliding contact10.1016/0301-679X(87)90076-4 ↗
39. Effect of laser surface alloying chromium onto AISI 1018 steel on the fatigue crack growth rate10.1016/0142-1123(89)90307-1 ↗
40. Metallographic study on rolling contact fatigue of 0.44% C-1.71% Mn induction-hardened bearing steels10.1016/0043-1648(95)06767-1 ↗