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.

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.

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 Sc on As-Cast Microstructures and Mechanical Properties of Al-Si-Mg-Cu-Ti Alloys

2017 ◽  
Vol 732 ◽  
pp. 32-37 ◽  
Author(s):  
Ming He Wang ◽  
Xiao Dong Du ◽  
Yu Kun Li ◽  
Zhen Zhang ◽  
Hai Lin Su ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Testing Machine ◽  
Ti Alloys ◽  
Universal Testing ◽  
Transmission Electron ◽  
Heat Treated ◽  
Eutectic Si ◽  
Microstructures And Mechanical Properties ◽  
Equiaxed Grain

The as-cast microstructures and mechanical properties of Al-Si-Mg-Cu-Ti alloys with and without Sc were investigated by metallographic microscope, field emission scanning electron microscope, energy spectrum analysis, transmission electron microscope and universal testing machine. The result shows that adding 0.20wt.% Sc into the casting alloy can refine the grain, change the growth morphology from dendrite to fine equiaxed grain, and the morphology of eutectic Si by rough laminar structure into fine fibrous. The tensile strength of alloy with 0.20wt.% Sc is up to 304.4 MPa after T6 heat treated, which is close to that of 6061 forging aluminum alloy.

Analysis on the Reasons of 500kV High-Voltage Disconnectors Hoop Fracture

2014 ◽  
Vol 915-916 ◽  
pp. 992-995
Author(s):  
Shuang Liu ◽  
Wei Tan Cui ◽  
Hong Wu Zhang ◽  
Yong Quan Ma
Keyword(s):  
Mechanical Properties ◽  
High Voltage ◽  
Chemical Elements ◽  
Testing Machine ◽  
Optical Microscope ◽  
Test Results ◽  
Tightening Force ◽  
Hardness Tester ◽  
Universal Testing ◽  
Fracture Appearance

The fracture reasons of 500kV high-voltage disconnectors hoops were analyzed. The fracture appearance, composition of chemical elements, metallographic, mechanical properties of the fractured hoops were investigated by ICP-AES, SEM, optical microscope, brinell hardness tester, universal testing machine. The test results that one reason is substandard products of this batch hoop. The composition of chemical elements and mechanical properties is fails to comply with applicable standards prescribed and the casting defects are found. Another reason is that the large pre-tightening force and tightens reverse order.

Improvement of Thermal and Ablative Properties of Phenolic Resin by SiC and MMT

2016 ◽  
Vol 707 ◽  
pp. 8-12
Author(s):  
Keeratikarn Kuttiwong ◽  
Jantrawan Pumchusak
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Thermogravimetric Analysis ◽  
Phenolic Resin ◽  
Testing Machine ◽  
Hot Compression ◽  
Thermal Stabilities ◽  
Universal Testing Machine ◽  
Universal Testing

In this work, the improvement of thermal and ablative properties of the phenolic resin by the addition of silicon carbide (SiC) and montmorillonite (MMT) were studied. The phenolic composites were fabricated by hot compression. The thermal stabilities, mechanical properties and ablative properties of the neat phenolic resin and the SiC/MMT phenolic composites were examined using a Lloyd universal testing machine, thermogravimetric analysis (TGA) and ablation tests (an oxyacetylene torch), respectively. Mass ablation rates were measured after flame exposure. The results showed that SiC/MMT provided the higher thermal stabilities and lower ablation rates to the phenolic resin.

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%.

scholarly journals A study on the influence of the loading rate and orientation on some mechanical properties of cassava tubers of different ages

2021 ◽  
Author(s):  
Olawale Charles Ogunnigbo ◽  
Adetan Dare ◽  
Morakinyo Tunde ◽  
Olusunmade Olusola ◽  
Ojerinde Joshua
Keyword(s):  
Mechanical Properties ◽  
Loading Rate ◽  
Testing Machine ◽  
Longitudinal Direction ◽  
Universal Testing Machine ◽  
Loading Direction ◽  
Universal Testing ◽  
Longitudinal Loading ◽  
Different Ages ◽  
Design And Construction

The study determined the effects of the speed of loading and the loading orientation on some selected mechanical properties of the TME 419 cassava tuber variety at different ages of the tuber which are essential in the design and construction of the processing and handling equipment of a cassava peeler. The properties considered include the bioyield and rupture points, compressive and rupture strengths, toughness and firmness, and moduli of stiffness and toughness, which were carried out in the transverse and longitudinal loading direction using an Instron Universal Testing Machine (UTM). As the loading rate increased from 5.00 to10.00 mm·min<sup>–1</sup> and the age of the tuber varies from 1.00 to 2.00 years, the bioyield and rupture points, compressive and rupture strengths, toughness, firmness, moduli of stiffness and toughness in the transverse and longitudinal direction varies from 1 619.61 to 3 636.19 N and 136.08 to 384.52 N, 0.48066 to 1.07913 N·mm<sup>–2 </sup>and 0.26604 to 0.75173 N·mm<sup>–2</sup>, 766 to 1055 N·mm<sup>–1</sup> and 1 262 to 2 965 N·mm<sup>–1</sup>, 303.98 to 553.68 mm·min<sup>–1</sup> and 28.08 to 53.71 mm·min<sup>–1</sup> 2.30 to 4.19 N·mm<sup>–2</sup> and 5.376 to 8.94N·mm<sup>–2 </sup>respectively. Generally, the values of the properties examined are higher in the longitudinal loading orientation than in the transverse and for a year and half old tuber which will be useful in designing an efficient cassava peeling system.

Effect of Alloying Elements on the Microstructure and Properties of AZ91D-xCa-ySr

2012 ◽  
Vol 591-593 ◽  
pp. 993-996
Author(s):  
Qing Zhu Sun ◽  
Hai Bo Wang ◽  
Yong Chang Zhu
Keyword(s):  
Mechanical Properties ◽  
Fatigue Testing ◽  
Low Cycle Fatigue ◽  
Testing Machine ◽  
Alloying Elements ◽  
Cycle Fatigue ◽  
Microstructure And Properties ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Electronic Microscope

In this paper, the microstructure and properties of AZ91D-xCa-ySr were studied by adding alloying elements. The mechanical properties were investigated by WDT-10 micro-electric universal testing machine and WD-T low cycle fatigue testing machine. The OLYMPUS-GX71 Optical electronic microscope, XRD and SEM were employed to investigate the microstructure of AZ91D. The results showed that the grains were refined by adding Ca,Sr,Gd and Y. Low cycle fatigue (LCF) behavior of AZ91D-0.4Ca-0.3Sr was improved obviously by adding 3.0%Gd and 3.0%Y into material, the tensile strengthen was up to 299Mpa, the elongation was 0.78%.

scholarly journals Comparison of different microstructure scaffolds for tissue regeneration

2016 ◽  
Author(s):  
Andžela Šešok ◽  
Deividas Mizeras ◽  
Algirdas Vaclovas Valiulis ◽  
Julius Griškevičius ◽  
Mangirdas Malinauskas
Keyword(s):  
Mechanical Properties ◽  
Tissue Regeneration ◽  
Low Cost ◽  
Testing Machine ◽  
Raw Material ◽  
Bending Tests ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
3D Printed

In this work we aim to determine the mechanical properties of 3D printed PLA objects having various orientation woodpile microarchitectures. In this work we chose three different 3D microarchitectures: woodpile BCC (each layer consists of parallel logs which are rotated 90 deg every next layer), woodpile FCC (every layer is additionally shifted half of the period in respect to the previous parallel log layer) and a rotating woodpile 60 deg (each layer is rotated 60 deg in respect to the previous one). Compressive and bending tests were carried out TIRAtest2300 universal testing machine. We found that 60 deg rotating woodpile geometry had the highest values which was approximately 3 times than the BCC or FCC log arrangements. Thus we prove that employing low-cost equipment and applying the same raw material one can create objects of desired rigidity.

scholarly journals Selected biometric and mechanical properties of the common reed Phragmites australis and the reed sweet grass Glyceria maxima rhizomes

2016 ◽  
Vol 48 (4) ◽  
pp. 289-297 ◽  
Author(s):  
Weronika Kowalik ◽  
Kinga Pachuta ◽  
Jerzy Jeznach
Keyword(s):  
Mechanical Properties ◽  
Phragmites Australis ◽  
Testing Machine ◽  
Common Reed ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Tensile Forces ◽  
The Common

Abstract The results on the selected biometric and mechanical properties of common reed Phragmites australis and reed sweet grass Glyceria maxima were presented. The experiments were conducted with the help of the universal testing machine Instron 5966. The underground biomasses, diameters, tensile forces, displacements and tensile strengths for summer and winter rhizomes of both species were assessed and compared. The final results indicate that rhizomes of common reed had higher values of the studied parameters of biometric and stretching than sweet reed grass rhizomes. Therefore, there are more opportunities to use them to protect the coastline.

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