Spinnability of Semi-Continuous Casting 7A09 Aluminum Alloy

2010 ◽  
Vol 97-101 ◽  
pp. 361-364
Author(s):  
R.Y. Zhang ◽  
S.W. Yu ◽  
K.H. Zhang ◽  
F.C. Wang
Keyword(s):  
Mechanical Property ◽  
Aluminum Alloy ◽  
Structural Material ◽  
Continuous Casting ◽  
Tensile Testing ◽  
Testing Machine ◽  
Tensile Testing Machine ◽  
Power Spinning ◽  
Alloy Tube ◽  
Aluminum Alloy Tube

7A09 aluminum alloy is served as an important structural material in many fields. In this paper, power spinning of semi-continuous casting 7A09 aluminum alloy tube blank was carried out, and the effects of process parameters, such as spinning temperature and roller feeding ratio, on spinnability were analyzed, further the mechanical property was tested on a tensile testing machine. The results show that: at 300°C and 1.2mm/r roller feeding ratio, semi-continuous casting 7A09 aluminum alloy tube blank has good spinnability; after spun, the yield strength is increased 44%, and elongation is increased 130%.

scholarly journals Effect of Er on Microstructure and Mechanical Properties of 5052 Aluminum Alloy with Big Width-To-Thickness Ratio

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 568
Author(s):  
Xinwei She ◽  
Xianquan Jiang ◽  
Bao Qi ◽  
Kang Chen
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Tensile Testing ◽  
Testing Machine ◽  
Thickness Ratio ◽  
Tensile Testing Machine ◽  
Microstructure And Mechanical Properties ◽  
Long Time ◽  
Scanning Electron ◽  
Al Matrix

The effect of Er on microstructure and mechanical properties of the 5052 aluminum alloy with a big width-to-thickness ratio was investigated by a metallurgical microscope, scanning electron microscope and tensile testing machine. The results showed that the precipitates were slightly refined after Er addition and Al3Fe was transformed into Al6Fe and AlEr with/without a small amount of Fe or Si. The effect of Er on grain refinement was related to its content. When Er content was lower or higher than 0.4%, the grain would coarsen. Homogenization could refine the grain by controlling Er content and distribution in the Al matrix. Long time homogenization at high temperature would significantly reduce the strength of the 5052 aluminum alloy and 5052 aluminum alloys with low Er content, but help to improve the plasticity of those with high Er content. The ultimate tensile strength, yield strength and elongation of the as-cast 5052 aluminum alloy were 197 MPa, 117 MPa and 22.5% respectively. The strength was the highest, when Er content was 0.4 wt. % and the elongation was the best at 0.1 wt. % Er content.

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.

Effect of Vanadium on the Microstructure and Property of Rebar Steel

2018 ◽  
Vol 928 ◽  
pp. 269-272
Author(s):  
Zi Shan Yao ◽  
Guang Xu ◽  
Ming Xing Zhou
Keyword(s):  
Mechanical Property ◽  
Tensile Testing ◽  
Induction Furnace ◽  
Testing Machine ◽  
Tensile Tests ◽  
Bearing Steel ◽  
Vacuum Induction Furnace ◽  
Tensile Testing Machine ◽  
Base Steel ◽  
Microalloying Elements

Rebar steel is used in the construction of various buildings. Vanadium (V), one of microalloying elements, is often added in the rebar steel to improve mechanical property. In order to analyse the effect of V on the microstructure and property of rebar steel, 0.043 wt.% V was added in a 20MnSi rebar steel. The base steel and V added steel were refined in a 50 kg vacuum induction furnace and rolled to plates of 14 mm thick. The mechanical properties of two steels were compared by tensile tests on a Wan-10000 tensile testing machine. The microstructure and precipitation of two steels were analysed by SEM and TEM observations. The microstructures of two steels consist of ferrite and pearlite. However, the grains of V bearing steel are finer. Moreover, fine nanoscale precipitates of V can be observed in V bearing steel. Therefore, the mechanical property of V addition rebar steel is improved by gain refinement strengthening and precipitation strengthening.

scholarly journals Mechanical Strength of Poly Nanofiber Patch Under a Biaxial Tensile Loading

2021 ◽  
pp. 269-274
Author(s):  
Elif Sensoy ◽  
Mahmoud Chizari
Keyword(s):  
Mechanical Property ◽  
Mechanical Strength ◽  
Tensile Testing ◽  
Testing Machine ◽  
Tensile Loading ◽  
Material Testing ◽  
Tensile Testing Machine ◽  
Biaxial Tensile ◽  
Conventional Material ◽  
Biaxial Tensile Testing

AbstractMost conventional material testing apparatuses are unable to assess poly-nanofibers sheets in biaxial directions. This study reports the design and prototyping of a biaxial tensile apparatus which can measure the mechanical property of a poly nanofibers patch. Several samples were assessed using the designed biaxial tensile testing machine and results recorded. Function of the apparatus was validated versus convention methods and outcome confirmed that it is accurate and reliable for testing poly nanofibers patch.

Effect of Boron on Microstructure and Mechanical Property of High Grade Pipeline Steel

2011 ◽  
Vol 299-300 ◽  
pp. 319-322
Author(s):  
Xing Chang Tang ◽  
Yong Lin Kang ◽  
Yan Yan Bo ◽  
Lei Fan
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Tensile Testing ◽  
Pipeline Steel ◽  
Testing Machine ◽  
High Grade ◽  
Tensile Testing Machine ◽  
Static Tensile ◽  
Microstructure And Mechanical Property ◽  
Electronic Microscope

The correlation among boron, microstructure and mechanical property of the X120 pipeline steel was investigated in this study. The mechanical properties of the steels were tested with quasi-static tensile testing machine. The microstructure of the steels with different boron contents was observed with scanning electronic microscope (SEM) and transmission electronic microscope (TEM). The result shows that by adding a small amount of boron the mechanical property of pipeline steel can be improved effectively.

Effects of La and Ce Mixed Rare Earth on Microstructure and Properties of Al-Mg-Si Aluminum Alloy

2017 ◽  
Vol 898 ◽  
pp. 367-371 ◽  
Author(s):  
Shun Cheng Wang ◽  
Nan Zhou ◽  
Dong Fu Song ◽  
Deng Nong
Keyword(s):  
Electrical Conductivity ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Rare Earth ◽  
Eddy Current ◽  
Tensile Testing ◽  
Testing Machine ◽  
Tensile Testing Machine ◽  
Microstructure And Properties ◽  
Positive Effect

The effects of La and Ce mixed rare earth on the microstructure and properties of Al-0.75Mg-0.6Si alloy were studied by optical microscopy, digital eddy current conductive instrument and tensile testing machine. Results showed that the addition of La and Ce mixed rare earth had a positive effect on the grain refinement of Al-0.75Mg-0.6Si alloy, which is beneficial to improve the electrical conductivity and strength. With increasing the additive amount of La and Ce mixed rare earth, the electrical conductivity, tensile strength and elongation of Al-0.75Mg-0.6Si alloy gradually increased. When the additive amount of La and Ce mixed rare earth increased to 0.5%, the electrical conductivity of Al-0.75Mg-0.6Si alloy was 55.7% IACS, the tensile strength and elongation of Al-0.75Mg-0.6Si alloy were 236 MPa and 16.7%, respectively. The electrical conductivity increased by 5.7%, tensile strength and elongation increased by 11.3% and 15.2% compared with that of Al-0.75Mg-0.6Si alloy without adding the La and Ce mixed rare earth.

Use of a Durometer to Assess Onion Bulb Hardness

1978 ◽  
Vol 14 (3) ◽  
pp. 269-272 ◽  
Author(s):  
J. F. M. Fennell
Keyword(s):  
Tensile Testing ◽  
Test Procedure ◽  
Testing Machine ◽  
Onion Bulb ◽  
Tensile Testing Machine ◽  
Varietal Differences ◽  
Onion Bulbs ◽  
Non Destructive

SUMMARYThe use of a durometer to assess hardness of onion bulbs is described, and compared with the use of a tensile testing machine. Results from the two tests were closely correlated, and significant varietal differences were detected in bulb hardness by both machines. The durometer is of particular value because of the simplicity and non-destructive nature of the test procedure.

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