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

2010 ◽  
Vol 667-669 ◽  
pp. 1101-1106 ◽  
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.

Dry Sliding Wear Behaviour of Fe-Based Powder Sintered Steel

2011 ◽  
Vol 415-417 ◽  
pp. 707-710
Author(s):  
Hua Chen ◽  
Hai Ying Sun
Keyword(s):  
Wear Resistance ◽  
Wear Mechanism ◽  
Sliding Wear ◽  
Hot Forging ◽  
Wear Behaviour ◽  
High Wear Resistance ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Delamination Wear ◽  
Sliding Wear Behaviour

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.

Optimization of dry sliding wear parameters of recursive friction stir processed aluminium 7075 alloy

2020 ◽  
pp. 135065012094161
Author(s):  
G Girish ◽  
V Anandakrishnan
Keyword(s):  
Electron Microscopy ◽  
Wear Rate ◽  
Sliding Wear ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Sliding Velocity ◽  
Friction Stir ◽  
Sliding Distance

In this work, the dry sliding wear behaviour of recursively friction stir processed AA7075 was investigated using a pin-on-disc wear testing apparatus. The microstructure of the processed specimen was probed using optical microscopy, transmission electron microscopy and atomic force microscopy. Experiments were conducted using Taguchi experimental design by varying three different parameters like load, sliding velocity and sliding distance, and the analysis of variance was performed to identify the influence of the parameters over the wear rate. From the main effect plot, the combination of 9.81 N of load, 2 m/s of sliding velocity and a sliding distance of 2000 m was identified as the optimum levels that minimize the wear rate. The regression model was developed to calculate the wear rate, and the validation test was performed with the optimum parameter combination and compared with the experimental results. Wear tracks were examined using field-emission scanning electron microscopy to identify the type of wear mechanism.

Garnet and Al-flyash composite under dry sliding conditions

2017 ◽  
Vol 52 (17) ◽  
pp. 2281-2288 ◽  
Author(s):  
S Sivakumar ◽  
S Senthil Kumaran ◽  
M Uthayakumar ◽  
A Daniel Das
Keyword(s):  
Genetic Algorithm ◽  
Wear Rate ◽  
Process Parameters ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding

The dry sliding wear behaviour of LM 24 aluminum alloy composites reinforced with garnet particles was evaluated. Stir casting technique was used to fabricate the composites. A pin-on-disc wear-testing machine was used to evaluate the wear rate, in which an EN 24 steel disc was used as the counterface. Results indicated that the wear rates of the composites were lower than that of the matrix alloy and further decreased with the increase in garnet content. However, in both unreinforced and reinforced composites, the wear rate increased with the increase in load and the sliding speed. Increase in the applied load increased the wear severity by changing the wear mechanism from abrasion to particle cracking-induced delamination wear. It was found that with the increase in garnet content, the wear resistance increased monotonically. The observations have been explained using scanning electron microscopy analysis of the worn surfaces and the subsurface of the composites. In this work, the most influencing input and output parameters have been performed and the process parameters have been prioritized using genetic algorithm. Genetic algorithm is used to optimize the most influencing input as well as output process parameters. The practical significance of applying genetic algorithm to dry sliding wear behavior process has been validated by means of computing the deviation between predicted and experimentally obtained wear behavior of metal matrix composite.

A Study on Dry Sliding Wear Behaviour of Hybrid Metal Matrix Composites at Room Temperature

2015 ◽  
Vol 766-767 ◽  
pp. 219-228 ◽  
Author(s):  
N.G. Siddeshkumar ◽  
G.S. Shiva Shankar ◽  
S. Basavarajappa
Keyword(s):  
Wear Rate ◽  
Sliding Wear ◽  
Hybrid Composites ◽  
Base Material ◽  
Optical Microscope ◽  
Specific Wear Rate ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Sliding Wear Behaviour

An attempt has been made to study the dry sliding wear behaviour of Aluminium based hybrid composites in room temperature.Al 2219 is used as base material with B4C and MoS2 as reinforcements. The hybrid composite were prepared by conventional stir casting technique. The dry sliding wear test were carried out for various parameters like sliding distance, applied load and sliding speed. The Optical Microscope and SEM results showed the presence of B4C and MoS2, which are fairly uniform and randomly dispersed on matrix material.XRD analysis, shown the presence of B4C and MoS2 phases in the prepared composites.The incorporation of reinforcement particles B4C and MoS2 reduces the specific wear rate of composites. The addition of MoS2 as a secondary reinforcement has significant effect on reducing specific wear rate of prepared composites. By using SEM worn surface of hybrid composites were studied.

scholarly journals Studies on Wear Behaviour of Coated RHA-TIO2-LM24 Aluminium Alloy Composite

2021 ◽  
pp. 309-319
Author(s):  
Chandar ◽  
Dr. G Harish ◽  
Gujjala Anil Babu ◽  
Puneeth P ◽  
Dr. H K Shivanand
Keyword(s):  
Wear Resistance ◽  
Sliding Wear ◽  
Aluminium Matrix ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Brake Disc ◽  
Pure Aluminium ◽  
Alloy Composite ◽  
Tio2 Particles

Liquid metallurgy method based aluminium matrix composites (AMCs) are extensively utilized in diverse engineering applications including shipbuilding, structural, non-structural, automotive, and aerospace owing to their superior strength, weightless, low density, excellent corrosion, and wear resistance. In the present research work, liquid state technique is employed to prepare the LM4/RHA/TiO2 composites containing four different mass proportion of RHA and TiO2. The weight proportion of reinforcements ie RHA-1,3&5 and TiO2 2,5&6 respectively.From the dry sliding wear studies, it is evident that the incorporation of RHA and TiO2 particles into the LM24 aluminium matrix alloy increases the wear resistance properties up to 45% as compared with the dry sliding behaviour of pure aluminium LM4 alloy. Dry sliding wear results revealed that the parameters like varying weight percentage, sliding speed, and applied load are the direct impact on the wear behaviour of the hybrid composites. A reduction of up to 34 % wear rate was observed by incorporation of 5% of RHA and 1% & 6 %of TiO2 particles as compared with the remaining percentage of reinforcements. The developed Coated RHA-TIO2 -LM24 aluminum alloy composite exhibits excellent mechanical properties, can be used in long-term applications in which saving weight is an important feature, such applications include and automotive engine parts and aerospace industry. In automotive industry, it can be used for making Brake disc, Turbo-compressors, Pump supporting parts, rear axle, differential housing.

scholarly journals “An Investigation of wear behavior of TiO2 nanoparticles mixed with Hybrid powder coating on MS material”

2021 ◽  
Vol 9 (12) ◽  
pp. 2350-2355
Author(s):  
Akshay Shinde
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Tio2 Nanoparticles ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Powder Coating ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Maximum Contribution

Abstract: To improve the wear resistance of the hybrid powder coating, TiO2 nanoparticles was hot mixed to form a homogenous mixture with the powder in the range varying wt. dry sliding wear test conducted to determine the wear resistance. The experiments were design according to Taguchi L9 array to find the optimum nanoparticles content required to minimize the wear rate of the coating. ANOVA was used to determine the effect of the parameters on wear rate. It showed that reinforcement has the maximum contribution on the wear rate of the coating as compared to load and frequency. From the graph of means optimum parametric values was obtained at 2 % wt of reinforcement, 2 N load and 2 Hz frequency. The wear rate decrease with the increase in reinforcement. Keywords: Taguchi Method, Tribometer, Hybrid powder, TiO2, Wear Rate.

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

2011 ◽  
Vol 299-300 ◽  
pp. 265-268 ◽  
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.

Effect of Boron Carbide Addition on Wear Behaviour of Cobalt Based Hardfacings by Plasma Transferred Arc Process

2010 ◽  
Vol 638-642 ◽  
pp. 3745-3750
Author(s):  
D.R.G. Achar ◽  
M. Kamaraj ◽  
C. S. Ganesh Bavisetty
Keyword(s):  
Wear Resistance ◽  
Boron Carbide ◽  
Sliding Wear ◽  
Elevated Temperatures ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Stellite 6 ◽  
Plasma Transferred Arc ◽  
Complex Carbides

Cobalt based alloy with the addition of 5 and 10 wt% boron carbide have been deposited by PTA process on stainless substrates effectively. The dry sliding wear performances of the coated alloys have been studied at room as well as at elevated temperatures. Addition of boron carbide to satellite 6 resulted in refinement of grains and formation of complex carbides and borides, which has lead to increase in hardness and wear resistance of the hardfaced layers. Superior wear resistance has been found to be at the composition of Stellite 6 with 5 wt% addition of boron carbide.

Addition of B4C to AZ91 via Diecasting and Its Effect on Wear Behaviour

2005 ◽  
Vol 488-489 ◽  
pp. 741-744 ◽  
Author(s):  
Ali Arslan Kaya ◽  
E.S. Kayali ◽  
Dan Eliezer ◽  
G. Gertsberg ◽  
N. Moscovitch
Keyword(s):  
Wear Resistance ◽  
Boron Carbide ◽  
Sliding Wear ◽  
Volume Fraction ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites

The dry sliding wear behavior of magnesium-matrix-composites (MMC) reinforced by boron carbide particulates (B4Cp) has been investigated. Magnesium is the lightest structural material and is a good choice as a metal matrix for boron carbide and silicon carbide addition. Magnesium and its alloys, without reinforcement, are generally not suitable for mechanical applications due to their low wear resistance. The MMCs used in this study were produced via highpressure die-casting technique. The wear resistance of B4C/AZ91D composite reinforced with 12 and 25 wt% B4C were studied, compared with unreinforced diecast AZ91D. As-cast microstructures of the materials and boron carbide particules were characterized by using Scanning Electron Microscopy (SEM). The hardness values of the control sample and the composites were determined via Vickers hardness measurements. Pin on disk dry sliding wear tests were carried out to study wear rate and wear mechanisms. The magnesium matrix composites were used as pins while mild steel as disc material. The worn surfaces of pins were examined by using SEM. The wear performance of magnesium matrix composites was improved with increasing volume fraction of B4C up to a certain level.

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

2018 ◽  
Vol 7 (3.17) ◽  
pp. 38 ◽  
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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