Influence of Al-10RE Modification on Microstructure and Mechanical Properties of ZL203 Aluminum Alloy

2011 ◽  
Vol 365 ◽  
pp. 98-103
Author(s):  
De Quan Shi ◽  
Gui Li Gao ◽  
Zhi Wei Gao ◽  
Yan Liu Wang ◽  
Xu Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Mechanical Testing ◽  
Testing Machine ◽  
Optical Microscope ◽  
Elongation Rate ◽  
Holding Time ◽  
Holding Temperature ◽  
Universal Mechanical Testing Machine

The influence of Al-10RE addition, holding time and holding temperature on the microstructures and mechanical properties of ZL203 aluminum alloy has been studied respectively through using the optical microscope and the universal mechanical testing machine. The experimental results lead to the following conclusions. When Al-10RE addition is 1.0%-1.5%, the holding time is 15 minutes and the holding temperature is 730°C-750°C, the microstructure of Zl203 is perfect. With the increase of Al-10RE addition, the mechanical properties including tensile strength, elongation rate and hardness gradually increase. When the Al-10RE addition is 1.0%-1.5%, the mechanical properties reaches maximum. When the Al-10RE addition is above 1.5%, the mechanical properties decrease with the increase of Al-10RE addition.

Effect of Ultrasonic/Electromagnetic Energy-Field on Structure Andproperties of Cast-Rolled 3003 Aluminum Alloy Strips

2014 ◽  
Vol 881-883 ◽  
pp. 1378-1384 ◽  
Author(s):  
Jian Ping Li ◽  
Peng Yue ◽  
Chen Shi
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Electromagnetic Field ◽  
Aluminum Alloy ◽  
Testing Machine ◽  
Optical Microscope ◽  
Energy Field ◽  
Universal Testing ◽  
Cold Rolling And Annealing ◽  
Scanning Electron

The plates under the compound energy field and the general ones were prepared by introducing ultrasonic and electromagnetic field at the key part of the cast-rolling area, and then the final aluminum strips with thickness of 0.27 mm were prepared through cold rolling and annealing. The microstructures and properties were investigated by optical microscope (OM), static/dynamic universal testing machine and scanning electron microscope (SEM). The results show that by applying compound energy-field, grains are significantly refined and the mechanical properties are improved. Compared to the general cast-rolling strips, the ultimate tensile strength, yield strength and elongation of compound energy-field aluminum strips are improved by 32.93%, 38.91% and 6.25%, respectively.

scholarly journals Effects of Zr, Y on the Microstructure and Properties of As-Cast Cu-0.5Y-xZr (wt.%) Alloys

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1084
Author(s):  
Dong Liang ◽  
Ning Wang ◽  
Yuxiang Wang ◽  
Zhenjie Liu ◽  
Ying Fu
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Tensile Strength ◽  
Copper Alloys ◽  
Testing Machine ◽  
Elongation Rate ◽  
Nominal Composition ◽  
Microstructure And Properties ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

In this paper, the microstructure and properties of as-cast Cu-Y-Zr alloys with different Zr content were studied in order to investigate whether the precipitates in copper alloys would interact with each other by adding Y and Zr simultaneously. As-cast Cu-0.5Y-xZr (wt.%, x = 0.05 and 0.1, nominal composition) alloys were prepared by vacuum melting in this study. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM) were used to observe the microstructure of the alloys. The mechanical properties of the alloys were tested by universal material testing machine at room temperature. The effects of Zr content on the microstructure and mechanical properties of the alloys were explored. As shown by the research results, in the as-cast Cu-0.5Y-xZr (wt.%) alloys, the precipitated phase was the Cu5Y/Cu5Zr phase and ranged from 10 nm to 70 nm in size; when the Zr content increased from 0.05 wt.% to 0.1 wt.%, both the tensile strength and elongation rate of the alloys increased; when the Zr content was 0.1 wt.%, the tensile strength was 225 MPa and the elongation rate was 22.5%.

Effect of Coarse-Grained Ring on Mechanical Properties and Cutting Performance of 2011 Aluminum Alloy Extruded Bar

2021 ◽  
Vol 1035 ◽  
pp. 114-118
Author(s):  
Chang Liang Shi ◽  
Yan Ping Niu ◽  
Yi Min Lin ◽  
Quan Hu ◽  
Xin Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Tensile Testing ◽  
High Speed ◽  
Testing Machine ◽  
Eutectic Phase ◽  
Cutting Performance ◽  
Coarse Grained ◽  
Tensile Testing Machine

The effects of coarse-grained ring on the mechanical properties and cutting performance of 2011 aluminum alloy extruded bars were studied by metallographic microscope, scanning electron microscope, tensile testing machine and high-speed lathe. The results show that the microstructure of aluminum alloy extruded bar was composed of α-Al phase, Al7Cu2Fe phase, CuAl2 phase and SnBi eutectic phase. There was a coarse-grained ring in the aluminum alloy extruded bar. The coarse-grained ring reduced the mechanical properties and cutting performance of the aluminum alloy extruded bar. The aluminum alloy extruded bar with a diameter of 30 mm had a coarse-grained ring depth of 9 mm and lower mechanical properties, whose the tensile strength was 287.9 MPa, the elongation was 17%, the cutting performance was poor and the chips were long. The aluminum alloy extruded bar with a diameter of 40 mm had a coarse-grained ring depth of 1 mm, higher mechanical properties and better cutting performance, whose the tensile strength was 394.5 MPa, the elongation was 23.5%, the chips were fine and uniform.

scholarly journals Effects of Si Content on Microstructure and Mechanical Properties of 8079 Aluminum Alloy

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Linhui ZHANG ◽  
Xiaoshu KANG ◽  
Binnian ZHONG
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Energy Dispersive Spectrometer ◽  
Testing Machine ◽  
Great Influence ◽  
Optical Microscope ◽  
Dispersion Strengthening ◽  
Rich Phase ◽  
Second Phases ◽  
Si Content

Because of high strength and low breaking rate, 8079 aluminum alloy has become the main material of double zero aluminum foil. However, there are still many problems in the manufacturing process, such as broken belt, pinhole and so on. As the main influencing element, Si has a great influence on the alloy. In this work, the influences of Si with various contents on microstructural evolution and mechanical properties of 8079 aluminum alloy were analyzed by energy dispersive spectrometer (EDS), optical microscope (OM), X-Ray diffraction analyzer (XRD), universal testing machine and Vickers hardness tester. The results showed that the primary Si phase was tiny and dispersed in the alloy when the content of Si is less than 1.3%. As the second phases dispersion strengthening, the Si phase can improve the strength of the alloy. However, when the Si content was too high, the Si phase increased and coarsened. Meanwhile, Fe-rich phase which increased by Si decreased the fine grain strengthening and the second phases strengthening mechanism. The coarse Si phase and the Fe-rich phase are brittle phase, which are easy to become the crack source in the process of material deformation and reduce the strength and toughness of the alloy. The mechanical property test shows that the performance of 8079 aluminum alloy is the best when the Si content is 1.3%.

Heat Treatment, Mechanical Properties and Microstructure of T-Joint Steel Arc Welded

2018 ◽  
Vol 876 ◽  
pp. 36-40
Author(s):  
Yustiasih Purwaningrum ◽  
Dwi Darmawan ◽  
Panji Lukman Tirta Kusuma
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Weld Metal ◽  
Testing Machine ◽  
Optical Microscope ◽  
Heat Treatments ◽  
Tensile Testing Machine ◽  
Weld Metals ◽  
Quenching Process

Heat treatment of T-Joint’s steel arc welded are performed are investigated in this research. The heat treatment process that used were annealing and quenching. The microstructure was investigated by optical microscope. The mechanical behavior of the samples was investigated using universal tensile testing machine for tensile test and Microvickers hardness method for hardness testing. The microstructure of welding zone of welding metals with various heat treatments is grain boundary ferrite, Widmanstatten ferrite and acicular ferrite. The weld metal with quenching treatment has a highest tensile strength with tensile strength 197.97 Mpa. The quenching process increases the tensile strength by 49.58 %. The distortion value in weld metal without heat treatment, quenching and annealing is 0.11mm; 0.04 mm and 0.08 mm respectively. The hardness number of weld metals with quenching process have a highest number base metal, HAZ and weld metals. Results showed that the mechanical properties of T-joints steel arc welded can be improved by various heat treatments.

Influence of Yb Modification on the Microstructure and Mechanical Properties of A356.2 Aluminum Alloy

2017 ◽  
Vol 898 ◽  
pp. 259-264 ◽  
Author(s):  
Shao Chen Zhang ◽  
Jin Feng Leng ◽  
Chen Xue Li ◽  
Xin Ying Teng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Ultimate Tensile Strength ◽  
Tensile Tests ◽  
Fracture Analysis ◽  
Optical Microscope ◽  
Tensile Fracture ◽  
Electronic Microscope ◽  
Better Than

A356.2 aluminum alloy (Al–7Si–0.35Mg) has been widely used in automotive and aircraft industries. Previous studies found that the metamorphism effect of rare earth is better than other type of elements because of long modification time and good stability. The influence of Yb addition (0%, 0.2%, 0.4% and 0.6%) and T6 heat treatment on A356.2 alloy has been investigated in this work. The microstructures and mechanical properties of the specimen after T6 treatment were examined by optical microscope, scanning electronic microscope and tensile tests. Experimental results showed that Yb could reduce the size of α-Al and change the Si morphology from needle-like to fine spheroidal particles. With the increase of Yb content, the ultimate tensile strength increased gradually. When adding 0.4%Yb, the alloy achieved the highest ultimate tensile strength (252 MPa) and hardness (97.3HB), 10.12% and 37.66% higher than the alloy with no Yb addition. Tensile fracture analysis showed that the fracture mechanism for A356.2 aluminum alloy after T6 treatment is transgranular/intergranular mixed mode of fracture.

Study on Microstructures and Mechanical Properties of AlSi9Cu3 Aluminum Alloy Fabricated by Liquid Forging

2011 ◽  
Vol 418-420 ◽  
pp. 353-356
Author(s):  
Sheng Li Li ◽  
Wei Lian Sun ◽  
Hui Qiang Wang ◽  
Bo Sun
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Testing Machine ◽  
Optical Microscope ◽  
Excellent Performance ◽  
Direct Reading ◽  
Forming Mechanism ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Microstructures And Mechanical Properties

Study the properties of AlSi9Cu3 aluminum alloy test bars fabricated by liquid forging with instruments such as optical microscope, direct reading spectrometer and micro-controlled electronic universal testing machine. Further more，analyze the microstructure and forming mechanism of AlSi9Cu3 aluminum alloy fabricated by liquid forging, the study shows : AlSi9Cu3 aluminum alloy fabricated by liquid forging has excellent performance and good prospects in production.

Influence of Quenching Parameters on Mechanical Properties of 7075 Aluminum Alloy

2011 ◽  
Vol 217-218 ◽  
pp. 238-242
Author(s):  
De Quan Shi ◽  
Zhi Wei Gao ◽  
Gui Li Gao ◽  
Xu Dong Wang ◽  
Hui Ying Tang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Testing Machine ◽  
Aging Treatment ◽  
Time Interval ◽  
7075 Aluminum Alloy ◽  
Transfer Time ◽  
Quenching Temperature ◽  
Universal Mechanical Testing Machine

By using the universal mechanical testing machine and SEM, the influence of quenching parameters on the mechanical properties of 7075 aluminum alloy has been studied, and the optimal quenching parameters have been got. The experimental results show that the temperature range of the quenching treatment is too wide. However, the over-burning will occur when the temperature is above 490°C. So the optimal quenching temperature is from 465°C to 475°C. The water temperature and the transfer time are below 40°C and 30s, respectively. The time interval between the quenching and aging treatment is found to have little influence on the mechanical properties of 7075 aluminum alloys.

Effect of Solution Treatment on Microstructure and Mechanical Properties of ZL114A Alloy

2011 ◽  
Vol 79 ◽  
pp. 117-122
Author(s):  
De Quan Shi ◽  
Gui Li Gao ◽  
Zhi Wei Gao ◽  
Xu Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Temperature ◽  
Eutectic Silicon ◽  
Testing Machine ◽  
Solution Treatment ◽  
Optimal Solution ◽  
Elongation Rate ◽  
Solution Temperature ◽  
Solution Parameters

By using the universal mechanical testing machine and electric microscope, the effect of solution parameters on the mechanical properties of ZL114A aluminum alloy has been studied. The experimental results lead to the following conclusions. With the increase of solution temperature, the eutectic silicon gradually become round, and the roundness of solution at 550°C/10h is good. The tensile strength and hardness will increase, and the elongation rate will rise and then drop when the solution temperature increases. Along with the increase of solution time, the tensile strength and hardness will increase and then decrease, however, the elongation rate has been rising. When the water temperature is below 40°C, the satisfied mechanical properties can be got. The optimal solution temperature and time are 540±5°C/10h and the water temperature is below 40°C.

KAISER ALUMINUM ALLOY 7050

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Heat Treating ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Kaiser Aluminum ◽  
Structural Parts ◽  
Very High

Abstract Kaiser Aluminum Alloy 7050 has very high mechanical properties including tensile strength, high fracture toughness, and a high resistance to exfoliation and stress-corrosion cracking. The alloy is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: AL-366. Producer or source: Tennalum, A Division of Kaiser Aluminum.

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