Research on Wear Resistance of Mg2Si Reinforced Hypereutectic Al-Si Alloy Composite

2012 ◽  
Vol 619 ◽  
pp. 553-556
Author(s):  
Zheng Liu ◽  
Xiao Mei Liu
Keyword(s):  
Wear Resistance ◽  
Mg2si Particle ◽  
Alloy Composite ◽  
Coarse Dendrite

Mg2Si particle reinforced hypereutectic Al-Si composite was prepared by casting, and the microstructure and wear resistance of the composite were researched. The results indicated that the morphology of Mg2Si obviously changed with Mg2Si contents increasing, in which the morphology of Mg2Si in the composite had changed from polygon block to characters like and finally became coarse dendrite. There were effects of Mg2Si content and morphology on the wear resistance in the composite, which had the higher hardness and better wear resistance at the suitable Mg2Si content.

413 Study of improving wear resistance on magnesium alloy composite

2000 ◽  
Vol 2000.75 (0) ◽  
pp. _4-19_-_4-20_
Author(s):  
Masakazu MATSUYAMA ◽  
Kazuhiko SAKAGUTI ◽  
Takashi MATSUOKA ◽  
Toshiji MUKAI
Keyword(s):  
Wear Resistance ◽  
Magnesium Alloy ◽  
Alloy Composite

Study on WC-Ni60 Complex Coating by High Frequency Induction Cladding

2011 ◽  
Vol 675-677 ◽  
pp. 1299-1302 ◽  
Author(s):  
Xin Wei ◽  
Gui Qin Wang ◽  
Yong Feng Chang ◽  
Chao Liu
Keyword(s):  
Wear Resistance ◽  
Composite Coating ◽  
High Frequency ◽  
Electron Probe ◽  
Bonding Layer ◽  
Alloy Composite ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metallurgical Bonding ◽  
High Frequency Induction

In this paper, WC-Ni60 alloy composite coating with different contents of WC particles was prepared on the 45steel substrate by high frequency induction cladding. The Composition and microstructure were characterized by X-ray diffraction (XRD) and electron probe X-ray microanalysis (EPMA), the abradability and hardness were tested by UMT-2 tribometer and HV-50A durometer, respectively. The results showed that the hardness and wear resistance of coating were enhanced with the increasing of WC content. WC-Ni60 coating obtained the best wear resistance with the content of 50% WC. The hardness of the coating got the highest when the content of WC was 60%, but wear resistance decreased. The WC-Ni60 coating was reinforced for various hard phases and the metallurgical bonding layer about 10μm was formed between coating and 45steel substrate.

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.

Effect of Electromagnetic Stirring on Morphology Evolution of Mg2Si in Hypereutectic Al-Si Alloy Composite

2012 ◽  
Vol 217-219 ◽  
pp. 47-50
Author(s):  
Zheng Liu ◽  
Hong Biao Xu ◽  
Zhi Peng Zhou ◽  
He Jun Xu
Keyword(s):  
Mechanical Properties ◽  
Isothermal Holding ◽  
Electromagnetic Stirring ◽  
Mg2si Particle ◽  
Morphology Evolution ◽  
Alloy Composite ◽  
Magnetic Stirring ◽  
Size And Morphology ◽  
Electro Magnetic

Mg2Si reinforced hypereutectic Al-Si composite was prepared and the effects of electro- magnetic stirring on Mg2Si particle in the composite were researched. The results indicated that there were the important effects of electromagnetic stirring on size and morphology of the particle in the composite. The morphology and size of the particle in the composite were obviously improved by electromagnetic stirring. In comparison with the sample without isothermal holding, the size of the particle isothermally held slightly increased under the same stirring condition, but the roundness of the particle was improved. After isothermal holding, the mechanical properties of the composite prepared by electromagnetic stirring were improved to some extent.

scholarly journals Abrasive Wear of AlSi12-Al2O3 Composite Materials Manufactured by Pressure Infiltration

2016 ◽  
Vol 61 (3) ◽  
pp. 1255-1260 ◽  
Author(s):  
M. Kremzer ◽  
M. Dziekońska ◽  
M. Sroka ◽  
B. Tomiczek
Keyword(s):  
Wear Resistance ◽  
Composite Materials ◽  
Porous Ceramic ◽  
Matrix Alloy ◽  
Alloy Composite ◽  
Practical Application ◽  
Pressure Infiltration ◽  
Al2o3 Composite ◽  
The Matrix ◽  
Pin On Disc

Abstract The aim of this study is to investigate tribological properties of EN AC-AlSi12 alloy composite materials matrix manufactured by pressure infiltration of Al2O3 porous preforms. In the paper, a technique of manufacturing composite materials was described in detail as well as wear resistance made on pin on disc was tested. Metallographic observations of wear traces of tested materials using stereoscopic and confocal microscopy were made. Studies allow concluding that obtained composite materials have much better wear resistance than the matrix alloy AlSi12. It was further proved that the developed technology of their preparation consisting of pressure infiltration of porous ceramic preforms can find a practical application.

WC Particles Reinforced Co-Based Alloy Coatings Produced by Laser Cladding

2016 ◽  
Vol 849 ◽  
pp. 695-701 ◽  
Author(s):  
Jia Zi Zhang ◽  
Guang Yuan Wang ◽  
Yuan Qin ◽  
Sen Yang
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Service Life ◽  
Laser Cladding ◽  
Microstructure Evolution ◽  
Composite Coatings ◽  
Alloy Composite ◽  
Die Steel ◽  
Cladding Layer ◽  
And Performance

To extend the service life of hot die steel (H13), WC particles reinforced Co-based alloy composite coatings were produced by laser cladding. The microstructure evolution and performance of the cladding layer were investigated. The experiment results showed that there existed fine dendritic crystals and dispersive WC particles in the cladding layer. The coatings were mainly composed of γ-Co, WC and Co3W3C phases. The microhardness of the cladding layer was higher than that of the arc surfacing layer, and the microhardness gradually increased with WC content. Compared to the substrate, the friction coefficient of the cladding layer reduced greatly. The coatings with 15wt.% WC possess the best wear resistance.

Hypereutectic Al-Si-Mg In Situ Composite Prepared by Melt Superheating

2011 ◽  
Vol 194-196 ◽  
pp. 113-116 ◽  
Author(s):  
Zheng Liu ◽  
Min Xie
Keyword(s):  
Processing Parameters ◽  
Holding Time ◽  
Mg Alloy ◽  
Mg2si Particle ◽  
Alloy Composite ◽  
Average Size

Mg2Si particle reinforced hypereutectic Al-Si-Mg alloy composite is prepared by melt superheating, and the effects of the main processing parameters, such as superheating temperature and holding time, on the microstructure of the composite are studied. The results indicate that it is feasible to prepare Mg2Si particle reinforced Al-18%Si-Mg alloy composite by melt superheating. The suitable preparing parameters of melt superheating on the alloy are obtained. When the superheating temperature is 860°C and holding time is 25 min, the average size of Mg2Si particle in the alloy will be reduced to about 11μm compared with 34μm without melt superheating.

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