Dry Sliding Wear Behaviour of Fe-Based Powder Sintered Steel

Fe-based system powder metallurgy in the as-sintered was investigated on pin-on-rolling wear tester for their dry sliding wear behaviour. The morphology of worn surfaces and wear mechanism were analysed by SEM. Results show the hot-forging deformation quenching and tempered considerably decreased the porosity and improved wear resistance, and compare with quenching microstructure, tempered microstructure has high wear resistance and match of strength-toughness. Fe-2.0Ni-0.4Mo-0.5C-0.6Cr alloy presented best wear characteristics. SEM observations of the worn surface revealed microploughing and plastic deformation and crack were the basic dry sliding wear morphology,and oxidative wear and delamination wear are dominant wear mechanism.

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Dry Sliding Wear Behavior of Fe-Ni-Mo-C-Cr Powder Sintered Structural Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.433-440.572 ◽

2012 ◽

Vol 433-440 ◽

pp. 572-577

Author(s):

Hua Chen ◽

Hai Ying Sun ◽

Zhan Kui Zhao ◽

Zhi Long Chai

Keyword(s):

Wear Resistance ◽

Wear Mechanism ◽

Sliding Wear ◽

Wear Behavior ◽

Hot Forging ◽

High Wear Resistance ◽

Dry Sliding Wear ◽

Dry Sliding ◽

Delamination Wear ◽

Cr System

Fe-Ni-Mo-C-Cr system powder metallurgy in the as-sintered was investigated on pin-on-rolling wear tester for their dry sliding wear behavior. The morphology of worn surfaces and wear mechanism were analysed by SEM. Results show the hot-forging deformation quenching and tempered considerably decreased the porosity and improved wear resistance, and compare with quenching microstructure, tempered microstructure has high wear resistance and match of strength-toughness. Fe-2.0Ni-0.4Mo-0.5C-0.6Cr alloy presented best wear characteristics. SEM observations of the worn surface revealed microploughing and plastic deformation and crack were the basic dry sliding wear morphology,and oxidative wear and delamination wear are dominant wear mechanism.

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Influence of Sn Content on the Microstructure and Dry Sliding Wear Behaviour of Hypereutectic Al-20Si Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.299-300.265 ◽

2011 ◽

Vol 299-300 ◽

pp. 265-268 ◽

Cited By ~ 1

Author(s):

X. F. Wu ◽

G.A. Zhang

Keyword(s):

Wear Resistance ◽

Grain Boundaries ◽

Sliding Wear ◽

Wear Behaviour ◽

Dry Sliding Wear ◽

Dry Sliding ◽

Sliding Wear Behaviour

The influence of Sn content on the microstructure and dry sliding wear behaviour of hypereutectic Al-20Si alloy was investigated. The results show that the b-Sn in the alloys precipitates mainly in the form of strips and blocks on the grain boundaries of α-Al phase or the interface of silicon and α-Al phases. The addition of Sn can improve the wear resistance of the hypereutectic Al-20Si alloy.

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Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i3.17.16620 ◽

2018 ◽

Vol 7 (3.17) ◽

pp. 38 ◽

Cited By ~ 1

Author(s):

M A. Abdelgnei ◽

M Z. Omar ◽

M J. Ghazali ◽

Mohamed A. Gebril ◽

M N. Mohammed

Keyword(s):

Wear Mechanism ◽

Sliding Wear ◽

Cast Alloy ◽

Contact Point ◽

Optical Microscope ◽

Wear Behaviour ◽

Dry Sliding Wear ◽

Dry Sliding ◽

Pin On Disc ◽

Sliding Wear Behaviour

In this study, the effect of improved microstructure of Al-5.7Si-2Cu-0.3Mg alloys by using semisolid process on hardness and dry sliding wear behaviour were investigated. The microstructures of conventional cast alloy were totally dendritic, while in rheocasting the dendritic transfer to fine globular microstructures after using cooling slope casting. Tribological tests were carried out by using a pin-on-disc apparatus in dry sliding conditions. Wear tests were at low sliding speed 1ms-1 ,applied load at 50N and three different sliding distance (i.e., 1.8Km, 5.4Km and 9Km) respectively. An optical microscope and a scanning electron microscope were used to examine the microstructure and to understand the wear mechanism on the worn surface of both samples. The results showed that, the wear resistance of rheocast alloy was improved and higher than that those produce by conventional casting. The volume loss of rheocast alloy show reduction more than 18% at 1.8Km and 10% at 9Km compared to as-cast alloy. Moderate wear regimes were appeared in both alloys, according to the range of wear rate. The friction coefficient had increased due to increase in the contact point between pin and disc materials. The dominant wear mechanism for conventional and rheocasting alloys was adhesion wear and abrasive wear respectively.

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Wear Behaviour of Al-1050 Alloy Processed by Severe Plastic Deformation

Materials Science Forum ◽

10.4028/www.scientific.net/msf.667-669.1101 ◽

2010 ◽

Vol 667-669 ◽

pp. 1101-1106 ◽

Cited By ~ 4

Author(s):

Chuan Ting Wang ◽

Nong Gao ◽

Robert J.K. Wood ◽

Terence G. Langdon

Keyword(s):

Plastic Deformation ◽

Wear Resistance ◽

Wear Rate ◽

Wear Mechanism ◽

Sliding Wear ◽

Wear Behaviour ◽

Dry Sliding Wear ◽

Dry Sliding ◽

Oxidation Wear ◽

Wear Tests

An Al-1050 alloy was processed by ECAP and HPT, respectively. Dry sliding wear tests were conducted on the as-received and SPD-processed samples under various sliding conditions. A comparison of wear rate indicated that SPD processing decreased the wear resistance. Two main wear mechanisms were observed. The initial wear stage was dominated by severe platelet wear mechanism and later wear was dominated by an oxidation wear mechanism. The results show the severe wear stage of SPD-processed Al-1050 is much longer than that of the as-received Al-1050, which is attributed to the loss of work hardening capacity after SPD processing.

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Study of Microstructure and Wear Behavior of T6 Heat Treated as Cast Al-25Mg2Si-2Cu Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.830-831.358 ◽

2015 ◽

Vol 830-831 ◽

pp. 358-361 ◽

Cited By ~ 1

Author(s):

D.G. Sondur ◽

D.M. Goudar ◽

D.G. Mallapur ◽

G.B. Rudrakshi

Keyword(s):

Wear Resistance ◽

Sliding Wear ◽

Wear Behavior ◽

Cast Alloy ◽

Wear Test ◽

Wear Behaviour ◽

High Wear Resistance ◽

Dry Sliding Wear ◽

Dry Sliding ◽

Heat Treated

In the present investigation, microstructural characteristics and dry sliding wear behaviour of T6 heat treated conventionally cast Al-25Mg2Si-2Cu alloy have been discussed. The as cast alloy was subjected to solutionizing at 500°C for 5h and isothermal aging treatment at 190°C for different aging times. The micro structural characterization was studied using Scanning Electron Microscope with EDS analysis. The microstructure of as cast alloy consists of intermetallics of coarse block like sharp edged β-(Mg2Si), θ-(Al2Cu) and Q-(Al-Mg-Cu-Si) in the form of Chinese scripts and needles distributed randomly in the Al-matrix. The microstructure of heat treated alloy shows spheroidization of β phase and fine precipitation of θ-(Al2Cu) and Q phases. The dry sliding wear test was carried out using pin-on-disc machine. Age hardened alloy exhibits high wear resistance and minimum coefficient of friction over the entire range of applied loads and sliding velocities. Furthermore, high wear resistance was observed in the under aged condition compared to over ageing conditions.

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