Influence of residual stress on the sliding wear of AISI 4340 steel (original) (raw)
Related papers
2016
In industry, the sliding mechanical systems are subject to friction and wear phenomena. These phenomena can be the origin of a reduction of the efficiency of the mechanical system even to be responsible for its incapacity. Generally, the materials of the parts which are moving relative (tribological couple) of these systems are low alloy steels and carbon steels, thanks to their good mechanical and tribological properties. The present work aimed to study, the surface wear and damage induced by dry sliding of hard carbon steel AISI 1055 (disc) against tempered low alloy steel AISI 4140 (pin) with different hardness and applied loads was investigated. The results revealed that the interaction between the applied load and pin hardness result in complex thermo-mechanical behaviour of the worn surfaces. When a lower hardness pin is used, the main wear mechanisms observed on the discs were abrasion, adhesion, and oxidation. When a higher hardness pin is used, the wear of the discs is gove...
EXPERIMENTAL INVESTIGATIONS OF SURFACE WEAR BY DRY SLIDING AND INDUCED DAMAGE OF MEDIUM CARBON STEEL
Diagnostyka, 2021
This study concerns the wear behaviour of metal couples used in industry, particularly in mechanical sliding systems (numerically controlled machine tools). In general, the nature of the materials of the parts of these systems which are in contact and move relatively, are medium carbon steels, thanks to their good mechanical and tribological properties. The present work aims to study, the dry sliding wear of the contact surface of the pin (machine slide) against the contact surface of a disc (machine groove) and the damage induced on the worn track. The pin is AISI 1038 and AISI 1045 steel, the disc is AISI 1055 steel. The tribological tests were carried out on a pin-disc tribometer, in an atmospheric environment. The wear of the pins being evaluated by weighing and studied according to the hardness of the pin with the variation of the normal load applied. The discussion of the results is based on SEM observations and EDS analyzes of worn surfaces and interfacial phenomena produced by dynamic contact. The results obtained indicated the influence of the applied load and the hardness on the wear of the pin and therefore on the tribological behaviour of the worn surfaces.
Some studies of wear of an Al-22wt.%Si alloy under dry sliding conditions
Wear, 1982
Aluminium-based alloys, which are considered useful for applications in which the strength-to-weight ratio is important, are also being studied for substitution as wear-resistant alloys [l] for cast iron components. Al-Si alloys have been used for tribological applications under conditions of both dry and lubricated contact. The wear behaviour of hypereutectic Al-Si alloys has been studied [2 -41 under various test conditions. It was observed [l] that, among several materials studied, a hypereutectic Al-Si alloy exhibited the lowest wear rate. Thus the hypereutectic Al-Si alloys have gained a definite status as wear-resistant materials. However, there have been conflicting
Tribological Wear Behavior of AISI 630 (17-4 PH) Stainless Steel Hardened by Precipitation Hardening
American Journal of Materials Science, 2016
The aim of this present work is to investigate the dry sliding wear behavior of 17-4 PH stainless steel or AISI 630 hardened by precipitation hardening. The sliding wear tests were conducted with the use of a pin-on-disc tribometer by considering three factors viz., normal load (20N, 40N and 60N), sliding distances (400m, 600m and 800 m) and sliding velocity (3, 5 and 7 m/s). The analysis of wear volume loss and specific wear rate has been defined by the Taguchi methodology and analysis of variance using statistical software MINITAB 15. Signal to noise ratio shows that, among the factors the load is the most significant factor that affects wear volume loss and specific wear rate.
TRIBOLOGY AND DEVELOPMENT OF WEAR THEORY: REVIEW AND DISCUSSION
In this review, the classical and contemporary wear theories and wear mechanisms are discussed. The development of wear theories are started from adhesive and abrasive to delamination theory, mechanical mixed layer (MML) and self lubrication theory are reviewed based on the previous reports. It was found that the adhesive and abrasive are developed based on quantitative approach whereas the delamination, MML and self lubrication theory are developed based on qualitative approach. Each theory has limitation in order to explain the wear theory comprehensively because of different testing system, composite manufacturing technique, type of reinforcement and volume fraction, size as well as hardness. However, a consensus has been reach from a qualitative point view. Theory of wear debris generation mechanism is the consequence of a combination of subsurface, surface and third body dynamic behaviours. This approach applied in order to explain the wear mechanism usually encountered such as adhesive, two-body abrasive, three-body abrasive, oxidation and delamination. Wear mechanism that occurred during dry siding wear of hybrid composite (multiple reinforcement composite consist of combination of hard and soft reinforcement) is combination of various mechanism and highly complex phenomenon. It well known that wear is nature process that what happen at one time is function of all event that occurred previously. Therefore, based on previous work on dry sliding wear of multiple reinforcement composite, it might be proposed that the wear mechanism involved in integrated wear mechanism.
The International Journal of Advanced Manufacturing Technology, 2017
In the present paper, dry sliding wear tests were performed on S335 steel coated with hard layer (Ti-W-N) with thickness at 2 μm at different sliding velocities (2.5 and 5 cm/s), sliding distances (9.42 and 18.80 m), and applied loads (2 and 4 N). These tests have been studied using a pinon-disc machine, and the results are presented. Mathematical models for dynamic friction coefficient, wear volume or volume loss, and total roughness were developed using the response surface methodology (RSM). Wear mechanisms for S335 steel were characterized by scanning electron microscopy. Two wear mechanisms have been identified irrespective of the applied load: crack wear occurs at the lowest sliding distances and delamination wear occurs at the highest. Also, results indicated that by increasing the sliding velocity and sliding distance, a transition from crack wear to delamination wear occurs with a corresponding maximum in the loss of volume due to wear.
Study of Wear Characteristics of AISI D2 Steel
In sheet metal forming, the wear of deforming dies continues to be a great concern to the automotive industry as a result of increasing die maintenance cost and scrap rate. The demand to reduce the use of lubricants and increase tool life in sheet metal stamping has resulted in increased research on the sliding contact between the tool and the sheet material. Hence it has been recognized that the deforming conditions, such as - normal load, sliding speed, sliding time etc. affect the performance of the operation to a greater extent. These deforming parameters are required to be carefully selected to optimize the economics and quality of operations. This can be achieved by detailed investigation and mathematical modeling of performance as a function of sliding conditions using design of experiments (DOE). The objective of the present work is to assess the effect of the sliding parameters on the wear of AISI D2 steel. It is used as the stamping die material in many cold roll forming and other press working industries. It is also known as high carbon & high chromium steel. The experiments have been conducted on WEAR & FRICTION MONITOR TR-201 also known as pin-on-disk apparatus. The wear experiments were performed on pins of D2 steel and disks of mild steel. Design of experiment based on response surface methodology (RSM) with three independent factors (normal load, sliding speed, sliding time) and five level central composite rotatable designs has been used to develop relationships for predicting weight loss of pins caused by rubbing action. The weight loss of pins has been measured within 10-4 g precision.
Wear, 2007
The wear rate of sliding materials seems impossible to predict. It is clearly a function of substrate material, but we are learning that many surface events are also important. In particular, studies on the last 20 years have shown that substances develop between two sliding bodies have a strong influence on both friction and wear. These substances had become known as "third bodies". Whereas third bodies have been proven to be important, they have not been completely characterized. The third bodies have been studied, but it appears that the geometries of the sliding pairs are also important.
Materials, 2020
18Ni(300) maraging steel, which has exceptional strength and toughness, is used in the field of aviation and aerospace. In this paper, using a high-speed tribo-tester, tribological behaviors of 18Ni(300) maraging steel were investigated under high-speed dry sliding conditions. Morphology of the worn surfaces and the debris was analyzed by scanning electron microscope, and the oxides of worn surfaces caused by friction heat were detected by X-ray diffraction. The experiment results reveal that the friction coefficient of frictional pairs declines with increasing load and speed. With the speed and load increasing, oxides of the worn surfaces of 18Ni(300) maraging steel change from FeO to Fe3O4 and the wear mechanism converts from adhesive wear into severe oxidative or extrusion wear.