Effect of Solid-Solution Process on the Properties of 7050 Aluminum Alloy

2020 ◽  
Vol 866 ◽  
pp. 63-71
Author(s):  
Wei Wei Song ◽  
Jia Fei Pu ◽  
Hong Feng Wang ◽  
Di Jiang ◽  
Lei Bao ◽  
...  
Keyword(s):  
Solid Solution ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Solution Process ◽  
Optical Microscope ◽  
Solution Processing ◽  
Processing Conditions ◽  
Hardness Tester ◽  
7050 Aluminum Alloy

This paper is dedicated to studying the effect of solid-solution process on the properties of 7050 aluminum alloy. First, the 7050 aluminum alloy samples were treated under different solid-solution processing conditions (460 ° C × 90 min, 470 ° C × 90 min, 460 ° C × 90 min + 470 ° C × 30 min and 460 ° C × 90 min + 470 ° C × 60 min). Then, the properties of different samples were tested. In this step, the metallographic structure of the samples were observed by an optical microscope, the hardness were measured by a Vickers hardness tester, the wear resistance were measured by a friction and wear tester, and the corrosion resistance was tested by an electrochemical workstation. Finally, experimental results confirm that 7050 aluminum alloy has the best wear resistance and corrosion resistance, in solid-solution processing conditions of 460 ° C × 90 min + 470 ° C × 60 min.

The Effects of Solid-Solution on Properties and Microstructure of 6063 Aluminum Alloy

2014 ◽  
Vol 881-883 ◽  
pp. 1346-1350 ◽  
Author(s):  
Ben Chen ◽  
Yu Jiao Wu ◽  
Tao Zhu ◽  
Xin Yun Li
Keyword(s):  
Solid Solution ◽  
Electrical Resistivity ◽  
Aluminum Alloy ◽  
Solution Process ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Solution Treated ◽  
Suitable Solution ◽  
6063 Aluminum Alloy

The solution treatment of 6063 aluminum alloy was carried out and the influences of solution process on microstructure, strength, hardness, and electrical resistivity of 6063 aluminum alloy was analyzed. The result shows that the suitable solution treatment can improve alloy solution-degree fully, meanwhile the changes of electrical resistivity of alloy tend to be balanced. The suitable solution process for 6063 aluminum alloy is solution-treated at 520°C for 3.5h, and the strength and hardness of alloy can be enhanced extremely after aging-treatment at 200°C for 5h.

scholarly journals Corrosion and Wear Behavior of PEO Coatings on D16T Aluminum Alloy with Different Concentrations of Graphene

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 249
Author(s):  
Wanying Liu ◽  
Yi Pu ◽  
Hongcheng Liao ◽  
Yuanhua Lin ◽  
Wanying He
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Wear Behavior ◽  
Corrosion And Wear ◽  
Plasma Electrolyte ◽  
Comprehensive Properties ◽  
Α Al2o3 ◽  
Plasma Electrolyte Oxidation ◽  
Peo Coatings

The effect of added graphene concentration on the microstructure, phase composition, corrosion- and wear- resistance of plasma electrolyte oxidation (PEO) coatings formed on D16T aluminum alloy in silicate electrolyte with different concentrations of graphene were investigated. The results show that the morphologies of the coatings with graphene were obviously different ascribed to the mode of graphene incorporated into the coating. The coatings consisted of mainly α-Al2O3, γ-Al2O3, and Al, which were divided into an outer porous layer and a dense inner layer. The thickness of the coatings increased non-linearly with graphene concentration. The corrosion resistance of the coatings with graphene was significantly improved. The wear resistance of the coatings was also greatly improved apart from the coating with 3 g/L graphene. The coating produced in the electrolyte with 2 g/L graphene exhibited the optimal comprehensive properties because graphene successfully incorporated into the coating via the pores and spread on the surface of the coating.

Microstructure, Mechanical Properties, and Corrosion Resistance of Ti-6Mo-6Nb-xSn Alloys for Biomedical Application

2020 ◽  
Vol 988 ◽  
pp. 175-181
Author(s):  
Galih Senopati ◽  
Cahya Sutowo ◽  
Fendy Rokhmanto ◽  
Ika Kartika ◽  
Bambang Suharno
Keyword(s):  
Corrosion Resistance ◽  
Elastic Modulus ◽  
Biomedical Application ◽  
Melting Process ◽  
Optical Microscope ◽  
Hardness Tester ◽  
Ultrasonic Evaluation ◽  
Α Phase ◽  
Lower Corrosion Rate ◽  
Mechanical Properties And Corrosion

Ti-6Al-4V alloy have been used widely for biomedical application, but its elastic modulus is still higher compared with human bone. Moreover, it contains V and Al that have been reported as toxic element. In this study new beta type Ti-6Mo-6Nb-xSn (0, 4, 8 wt.%) have been developed. The aim of this study was to evaluate the Sn addition on microstructural transformation, mechanical behaviour, and corrosion resistance of Ti-6Mo-6Nb-xSn alloys. The Ti-6Mo-6Nb-xSn alloys produced by arc re-melting process and the obtain ingot were characterized using optical microscope, x-ray diffractometer, ultrasonic evaluation, Vicker’s hardness tester, and polarization test to evaluate the corrosion resistance. The result showed that Ti-6Mo-6Nb-8Sn has the lowest elastic modulus and Vicker’s hardness value. The Sn addition could suppress α phase formation. Ti-6Mo-6Nb-8Sn has lower corrosion rate compared to commercial Ti6Al4V.

A Comparative Study on the Wear and Corrosion Resistance of Coatings

2016 ◽  
Vol 853 ◽  
pp. 441-445
Author(s):  
Cheng Zhou Chen ◽  
Wei Ze Wang ◽  
Kai Di Cheng
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Optical Microscope ◽  
Polymer Coatings ◽  
Negative Influence ◽  
Aluminum Coating ◽  
Wear And Corrosion ◽  
Bending Load ◽  
Wear And Corrosion Resistance ◽  
The Impact

The vessel containing sulfur particles has been found failing due to the effect of corrosion and erosion by the sulfur particles. Several coatings, including zinc-aluminum coating, wear-resistance painting and two kinds of polymer, have been provided to resist the negative influence of sulfur in the present study. The wear and corrosion resistance of the selected coatings has been measured to study the performance difference. Impact test has also been done to investigate the bonding condition of coatings under the impact or bending load. The microstructure of coatings before and after wear test is observed by the Optical Microscope (OM) and Scanning Electron Microscope (SEM). The experiment results reveal that one of the polymer coatings shows the best performance in the corrosion resistance, another polymer coating’s wear resistance is better than others. The coatings are bonded well with the substrate except the zinc-aluminum coating. The performance of painting is ordinary in this investigation.

Fabrication and Performance of Ni-Co-P/Si3N4 Electroplated Composite Coatings on Al-Si Alloys

2013 ◽  
Vol 377 ◽  
pp. 235-239
Author(s):  
Yun Li ◽  
Liang Fang ◽  
Wei Dong Shen ◽  
Sheng Chun Wang ◽  
Chun Lan Cao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Electric Current ◽  
Current Density ◽  
Composite Coatings ◽  
Adhesive Force ◽  
Optical Microscope ◽  
Electric Current Density ◽  
Electro Deposition ◽  
X Ray ◽  
Hardness Tester

In order to improve the wear resistance of Al-Si alloys, the electro deposition of Ni-Co-P/Si3N4coating on a hypereutectic Al-Si casting alloy was studied in this paper. The thickness, hardness, surface morphology, composition, adhesive force and wear resistance of Ni-Co-P/Si3N4coating were measured by optical microscope, micro-hardness tester, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), adhesive attraction scratcher and abrasion tester. It was shown that Si3N4particulates were uniformly distributed in the composite coating. And the effect of process parameters, such as electric current density, temperature, PH, plating time and component of electroplating bath,were obtained. The wear resistance of the coating was improved with the increase of hardness and the content of Si3N4in the coating. It was also improved by decreasing electric current density. The adhesion of the coating was poor for increasing the content of P and Co in the coating. At the same time, the coating was hard, friable, and easy to be broken with the decrease of temperature.

scholarly journals Effect of Deep Cryogenic Treatment on Microstructure and Wear Resistance of LC3530 Fe-Based Laser Cladding Coating

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2400 ◽  
Author(s):  
Xiao Zhang ◽  
Yajun Zhou
Keyword(s):  
Wear Resistance ◽  
Laser Cladding ◽  
Room Temperature ◽  
Cryogenic Treatment ◽  
Optical Microscope ◽  
Material Surface ◽  
Wear Coefficient ◽  
Deep Cryogenic Treatment ◽  
Hardness Tester ◽  
Alloy Compound

The effect of deep cryogenic treatment on microstructure and wear resistance of LC3530 Fe-based powder laser cladding coating was investigated in this paper. The cladding coating was subjected to deep cryogenic treatment for the different holding times of 3, 6, 9, 12, and 24 h, followed by tempering at room temperature. Microstructure of the cladding coating was observed by optical microscope (OM) and the microhardness was measured by the Vickers-hardness tester. The wear was tested by ball and flat surface grinding testing conducted on the material surface comprehensive performance tester. The wear scars were analyzed using a non-contact optical surface profiler and scanning electron microscope (SEM). The results showed the grain size of cladding coating after 12 h of deep cryogenic treatment was significantly reduced by 36.50% compared to the non-cryogenically treated cladding coating, and the microhardness value increased by approximately 34%. According to the wear coefficient calculated by the Archard model, the wear resistance improved about five times and the wear mechanism was micro-ploughing. The deep cryogenic treatment could enhance the wear resistance of the cladding coating by forming a wear resistant alloy compound and higher surface microhardness.

Preparation and Properties of Cerium Conversion Coatings on the Surface of Aluminum Alloy LY12

2012 ◽  
Vol 182-183 ◽  
pp. 241-244
Author(s):  
Cheng Bao Xia ◽  
Wen Jun Ge ◽  
Hou Chuan Yang
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Surface Modification ◽  
Aluminum Alloy ◽  
New Technology ◽  
Conversion Coating ◽  
Modification Technique ◽  
Resistance Performance ◽  
The Given

In order to improve the repairing quality of aircraft envelope of the aluminum alloy LY12， the cerium conversion coating technology was studied by using the surface modification technique. Principle experiment was on the basis of aviation repair technological requirement, refers to the related technique, through examination of corrosion resistance and wear resistance performance of cerium conversion coating, the principal composition of the formula for making cerium conversion coating:Ce(NO3)3 + KMnO4+ Ce-1 (chemical additive), In order to determine each composition of the formula and the technology parameters scientifically, L9(34) orthogonal testing method was adopted, and the formula of surface modification solution was optimized, the technological conditions for making cerium conversion coating on the surface of aircraft envelope were determined. Results of corrosion resistance and wear resistance of the cerium conversion coating on the surface of the aluminum alloy LY12 aircraft envelope obtained by the new technology showed: 1. On the given test conditions, the best content of each chemical composition in the formula of modification solution for making cerium conversion coating on the surface were: l.Ce(NO3)3：14g/L,KMnO4：1g/L,addictive Ce-1:0.3g/L；Main technology parameters were ：pH=1.5～2.7;temperature：20°C；time:15~25 min.；2. Under the same test condition, the corrosion resistance of surface of the cerium conversion coating obtained in test modification solution was better than Alodine 1001 obtained from Bombardier Corporation of Canada, and can meet the repairing demands of Aircraft Envelope.

Research on Preparation and Properties of Antiwear and Anticorrosion Composite Coating Ni-P-SiC

2014 ◽  
Vol 988 ◽  
pp. 117-120
Author(s):  
Ya Min Li ◽  
Xing Zhang ◽  
Amin Wang ◽  
Hong Jun Liu
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Electroless Plating ◽  
Bonding Strength ◽  
Composite Coatings ◽  
Micro Hardness ◽  
Uniform Thickness ◽  
Structure And Morphology

Ni-P-SiC composite coatings on the surface of ZL102 aluminum alloy were prepared by direct electroless plating. The structure and morphology of the coatings after heat treatment at 400 °C for 1 hour were analyzed by XRD and SEM. The bonding strength, hardness, corrosion resistance and wear resistance of the coatings were tested. The results show that the coatings structure is crystalline and the main crystal phase is Ni3P. The SiC particles are evenly distributed in the coatings. The coatings have uniform thickness, high bonding strength and high micro hardness (up to 1395.28 HV.2). It is also shown that the substrate corrosion resistance and wear resistance can be considerably improved after electroless plating.

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