Effect of Solution Treatment on Tensile Properties of AA2024 Matrix Composite Reinforced with Magnesium Borate Whisker

2007 ◽  
Vol 353-358 ◽  
pp. 1334-1337
Author(s):  
Pei Lian Wu ◽  
Chen Yi Yao ◽  
Li Dong Wang ◽  
Wei Dong Fei
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Interfacial Reaction ◽  
Squeeze Casting ◽  
Solution Treatment ◽  
Solution Time ◽  
Casting Method ◽  
Magnesium Borate ◽  
Aluminum Alloy 2024 ◽  
Reaction Degree

Magnesium borate whisker reinforced aluminum alloy 2024 (AA2024) composite was fabricated by squeeze casting method, after was CuO coating of the whisker. The interfacial reaction in the composite was investigated. To change the interfacial reaction degree, the solution treatment for different time was carried out. The results show that the interfacial reaction degree increases with solution time increasing. The maximum ultimate tensile strength can be obtained when the solution time is suitable.

Interfacial Reaction in Al Matrix Composites Reinforced by Mg Borate Whisker

2007 ◽  
Vol 546-549 ◽  
pp. 643-648 ◽  
Author(s):  
Pei Lian Wu ◽  
Li Dong Wang ◽  
Wei Dong Fei
Keyword(s):  
Electron Microscope ◽  
Tensile Properties ◽  
Interfacial Reaction ◽  
Transmission Electron Microscope ◽  
Squeeze Casting ◽  
Matrix Composites ◽  
Casting Method ◽  
Transmission Electron ◽  
Al Matrix Composites ◽  
Al Matrix

In the present study, MBOw/Al composites were fabricated using squeeze casting method. The interfacial reaction in the composite was investigated using transmission electron microscope (TEM). The tensile properties of the composites with different kinds of matrix were studied. The experimental results showed that the properties of the composite were very good.

Effect of Mg and Cu Additions on Microstructure and Mechanical Properties of Squeeze Casting Al-Si-Cu-Mg Alloy

2016 ◽  
Vol 850 ◽  
pp. 511-518 ◽  
Author(s):  
Hai Jun Liu ◽  
Lie Jun Li ◽  
Jian Wei Niu ◽  
Ji Xiang Gao ◽  
Chuan Dong Ren
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Artificial Aging ◽  
Squeeze Casting ◽  
Solution Treatment ◽  
Mg Alloys ◽  
Percentage Elongation ◽  
Microstructure And Mechanical Properties ◽  
Content Ratio ◽  
Cast Alloys

The effects of Mg and Cu additions with different contents on the mechanical properties of Al-Si alloy prepared by indirect squeeze casting have been experimentally investigated. The microstructure and mechanical properties of as-cast and T6-treated Al-Si-Cu-Mg alloys were tested by OM, SEM, DSC and tensile measurement, where the samples were produced by artificial aging at 180°C for 8 h after solution treatment at 540°C for 4 h. It has been found that for the as-cast alloys, with increasing contents of Mg and Cu the tensile strength (UTS) and yield strength (YS) increased, while the percentage elongation (El) decreased. And the optimal mechanical properties of Al-Si-Cu-Mg alloys were obtained under the content ratio of Cu/Mg within 4, where the UTS and El reached 426 MPa and 6.3% after T6 treated, respectively.

scholarly journals Experimental Investigation and Optimization of the Semisolid Multicavity Squeeze Casting Process for Wrought Aluminum Alloy Scroll

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5278
Author(s):  
Yi Guo ◽  
Yongfei Wang ◽  
Shengdun Zhao
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Process Parameters ◽  
Squeeze Casting ◽  
Shrinkage Porosity ◽  
Optimal Process ◽  
Squeeze Pressure ◽  
Wrought Aluminum

Scroll compressors are popularly applied in air-conditioning systems. The conventional fabrication process causes gas and shrinkage porosity in the scroll. In this paper, the electromagnetic stirring (EMS)-based semisolid multicavity squeeze casting (SMSC) process is proposed for effectively manufacturing wrought aluminum alloy scrolls. Insulation temperature, squeeze pressure, and the treatment of the micromorphology and mechanical properties of the scroll were investigated experimentally. It was found that reducing the insulation temperature can decrease the grain size, increase the shape factor, and improve mechanical properties. The minimum grain size was found as 111 ± 3 μm at the insulation temperature of 595 °C. The maximum tensile strength, yield strength, and hardness were observed as 386 ± 8 MPa, 228 ± 5 MPa, and 117 ± 5 HV, respectively, at the squeeze pressure of 100 MPa. The tensile strength and hardness of the scroll could be improved, and the elongation was reduced by the T6 heat treatment. The optimal process parameters are recommended at an insulation temperature in the range of 595–600 °C and a squeeze pressure of 100 MPa. Under the optimal process parameters, scroll casting was completely filled, and there was no obvious shrinkage defect observed inside. Its microstructure is composed of fine and spherical grains.

Influence of Solution Treatment on Atomic Diffusion and Mechanical Properties of AZ80 Magnesium Alloy

2012 ◽  
Vol 479-481 ◽  
pp. 27-30
Author(s):  
Ju Mei Zhang ◽  
Zhi Hu Wang ◽  
Wan Chang Sun ◽  
Li Bin Niu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Yield Strength ◽  
Grain Boundaries ◽  
Tensile Testing ◽  
Solution Treatment ◽  
Solution Time ◽  
Atomic Diffusion ◽  
Az80 Magnesium Alloy

The atomic diffusion and mechanical properties of as-cast AZ80 magnesium alloy after solution treatment at different time were studied by OM,SEM,EDS as well as tensile testing. The results show that the coarse β-Mg17Al12 phase distributed along the grain boundaries as net microstructure is almost dissolved after solution treatment, and the content of Al that in the α-Mg matrix is well distributed with the solution time prolonged. Because of the β-Mg17Al12 phase reducing and granulating, the function of precipitates phase strengthening was depressed and the hardness (HB) of alloy dropped obviously. However, the tensile strength(σb ) and elongation(δ) enhanced remarkably and the yield strength (σ0.2) decreased slightly.

Effect of Steel shot peening Time on some Mechanical Properties of Friction stir Welds for Aluminum Alloy (2024 – T3)

2020 ◽  
Vol 27 (4) ◽  
pp. 58-69
Author(s):  
Ghazwan Shihab ◽  
Adel Al-Bash
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Shot Peening ◽  
Mechanical Tests ◽  
Friction Stir ◽  
Compressive Stresses ◽  
Surface Annealing ◽  
Aluminum Alloy 2024 ◽  
Steel Balls

The aim of this work is to study the effect of the time of shot peening 3mm diameter steel balls on the mechanical properties of (2024 - T3) aluminum alloy butt welds. The welds were joined using Friction stir welding method. Mechanical tests) Tensile strength, hardness, fatigue strength( were performed on welded joints to determine the variation of these properties. The experimental results of SP time, 5 and 10 minutes give an improvement in mechanical properties. It was found that the longer the time of shot peening the mechanical properties are increased to a certain extent than the effect begins whereas when shot peening time at 15 min the mechanical properties decrease due to the concentration of stresses and surface annealing. Results show that the best mechanical properties of the welded zone were obtained at 10 minutes shot time due to the high compressive stresses generated by shot peening.

The Effect of Solution Time on the Microstructure of A356.2 Aluminum Alloy Provided by Rheocasting and Squeeze Casting

2022 ◽  
Vol 327 ◽  
pp. 189-196
Author(s):  
Le Cheng ◽  
Hong Xing Lu ◽  
Min Luo ◽  
Xing Gang Li ◽  
Wan Peng Zhang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Solution Heat Treatment ◽  
Production Efficiency ◽  
Treatment Process ◽  
Squeeze Casting ◽  
Solution Process ◽  
Solution Treatment ◽  
Solution Time ◽  
Conventional Solution ◽  
Short Time

The evolution of the microstructure of A356.2 alloys prepared by the rheocasting and squeeze casting during solution heat treatment was investigated. In contrast with the conventional solution heat treatment process (3 hours at 540oC), a short time solution treatment process (less than 1 hour at 540oC) is applied in this paper. The results show that the rheocastings require a shorter solution time than the squeeze-castings to obtain spheroidized Si particles. After solution for 10 min, the X-ray diffraction inspection results show that the Mg2Si phase completely is dissolved in both rheocastings and squeeze-castings. However, a small amount of Mg2Si is found at the edge of the Si particle by scanning electron microscope observation. After solution for more than 20 min, the Mg2Si phase is completely dissolved. Fe-rich phases, including AlSiFeMg and AlFeSi, exist throughout the solution process. The developed T6 heat treatment with a short solution time can effectively improve production efficiency and decrease process cost for the rheocasting process. Key words: A356.2 alloy, microstructure, short solution time, rheocasting, squeeze casting

Study on Effects of Cu Content on Properties of Al-Mg-Si Aluminum Alloy

2012 ◽  
Vol 466-467 ◽  
pp. 111-115
Author(s):  
Jian Xin Zhang ◽  
Shui Jun Shao ◽  
Liang Li
Keyword(s):  
Thermal Conductivity ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Solution Treatment ◽  
Slow Cooling ◽  
Cu Content ◽  
Conductivity Property ◽  
Alloy Material ◽  
Corrosive Property

The effects of Cu element on properties of Al-Mg-Si aluminum alloy was studied, and the mechanism of Cu in influencing the property of the alloy was discussed. The results indicate that Cu element can weaken the conductivity property of alloy material, its thermal conductivity is improved with slow cooling. Cu element is sensitive to corrosive property of the alloy, it can cause corrosion resistance decreasing significantly, quenching heat treatment made corrosive property of the material deteriorative. Proper Cu element is helpful to microstructure refinement and the enhancement of strength, tensile strength of the material is increased 10 percent after solution treatment and ageing strengthening.

scholarly journals The Effects of Pressure During the Crystallization on Properties of the AlSi12 Alloy

2017 ◽  
Vol 17 (3) ◽  
pp. 103-106 ◽  
Author(s):  
R. Pastirčák ◽  
J. Ščury ◽  
J. Moravec
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Squeeze Casting ◽  
Structural Characteristics ◽  
Mold Temperature ◽  
Operating Pressure ◽  
Technological Parameters ◽  
Casting Method ◽  
A Value ◽  
The Impact

Abstract The paper deals with the impact of technological parameters on the mechanical properties and microstructure in AlSi12 alloy using squeeze casting technology. The casting with crystallization under pressure was used, specifically direct squeeze casting method. The goal was to affect crystallization by pressure with a value 100 and 150 MPa. From the experiments we can conclude that operating pressure of 100 MPa is sufficient to influence the structural characteristics of the alloy AlSi12. The change in cooling rate influences the morphology of the silicon particles and intermetallic phases. A change of excluded needles to a rod-shaped geometries with significantly shorter length occurs when used gravity casting method. At a pressure of 100 MPa was increased of tensile strength on average of 20%. At a pressure of 150 MPa was increased of tensile strength on average of 30%. During the experiment it was also observed, that increasing difference between the casting temperature and the mold temperature leads to increase of mechanical properties.

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