scholarly journals Study on the Thermal, Electrical Conductivity and Welding Properties of Aluminium Alloy Bumper

2021 ◽  
Vol 1952 (3) ◽  
pp. 032069
Author(s):  
Jintao Su ◽  
Jianping Lou ◽  
Xiaolu Jiang
Keyword(s):  
Electrical Conductivity ◽  
Aluminium Alloy ◽  
Welding Properties

Mechanical effect on electrical conductivity of magnetic materials

2020 ◽  
Vol 62 (10) ◽  
pp. 584-587
Author(s):  
Fuchen Zhang ◽  
Hongmei Li ◽  
Ruiqing Jia
Keyword(s):  
Electrical Conductivity ◽  
Plastic Deformation ◽  
Carbon Steel ◽  
Aluminium Alloy ◽  
Magnetic Materials ◽  
Mechanical Effect ◽  
Silicon Steel ◽  
Data Measurement ◽  
Resistance Coefficients

To study the mechanical effect on electrical conductivity of magnetic materials, the electrical conductivity of silicon steel, carbon steel and aluminium alloy with different resistance coefficients at the stage of elasticity deformation and plastic deformation were studied by measuring the resistance. Fitting models were established through theorisation and data measurement and corresponding parameters were given. The following results were obtained. At the stage of elasticity deformation, the electrical conductivity of the material increased rapidly at first and then slowly increased with the increase of stress. At the stage of plastic deformation, the electrical conductivity decreased approximately linearly with the increase of plastic deformation.

Correlation of Strength with Hardness and Electrical Conductivity for Aluminium Alloy 7010

2006 ◽  
pp. 853-858 ◽  
Author(s):  
Manuel A. Salazar-Guapuriche ◽  
Y.Y. Zhao ◽  
Adam Pitman ◽  
Andrew Greene
Keyword(s):  
Electrical Conductivity ◽  
Aluminium Alloy

Correlation of Strength with Hardness and Electrical Conductivity for Aluminium Alloy 7010

2006 ◽  
Vol 519-521 ◽  
pp. 853-858 ◽  
Author(s):  
Manuel A. Salazar-Guapuriche ◽  
Y.Y. Zhao ◽  
Adam Pitman ◽  
Andrew Greene
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Tensile Strength ◽  
Aluminium Alloy ◽  
Precipitation Hardening ◽  
Age Hardening ◽  
Al Alloy ◽  
Wide Range ◽  
Proof Strength ◽  
The Relationship

The tensile strength, proof strength, hardness and electrical conductivity of Al alloy 7010 under different temper and ageing conditions were investigated with the aim to correlate strength with hardness and electrical conductivity so that the strength of the alloy can be determined nondestructively. Following the solutionising treatment, continuous age hardening was performed on a series of test coupons, taken from a large plate, to produce a wide range of precipitation hardening conditions, which gave rise to progressive variations of strength, hardness and conductivity. The relationship between strength and hardness was found to be reasonably linear, whereas the relationship between hardness and strength with electrical conductivity was non-linear. The ageing conditions and therefore the mechanical properties of the components can be predicted more accurately by the simultaneous combination of hardness and conductivity values.

Electrical Conductivity of Aluminium Alloy Foams

2002 ◽  
Vol 19 (10) ◽  
pp. 1501-1504 ◽  
Author(s):  
Feng Yi ◽  
Zheng Hai-Wu ◽  
Zhu Zhen-Gang ◽  
Zu Fang-Qiu
Keyword(s):  
Electrical Conductivity ◽  
Aluminium Alloy

Removing Substrate Background in TEM Microanalysis

1974 ◽  
Vol 32 ◽  
pp. 568-569
Author(s):  
John C. Russ ◽  
Nicholas C. Barbi
Keyword(s):  
Electrical Conductivity ◽  
Rapid Growth ◽  
Organic Film ◽  
Absolute Concentration ◽  
Background Signal ◽  
X Ray ◽  
Elemental Concentrations ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
The Continuum

The rapid growth of interest in attaching energy-dispersive x-ray analysis systems to transmission electron microscopes has centered largely on microanalysis of biological specimens. These are frequently either embedded in plastic or supported by an organic film, which is of great importance as regards stability under the beam since it provides thermal and electrical conductivity from the specimen to the grid.Unfortunately, the supporting medium also produces continuum x-radiation or Bremsstrahlung, which is added to the x-ray spectrum from the sample. It is not difficult to separate the characteristic peaks from the elements in the specimen from the total continuum background, but sometimes it is also necessary to separate the continuum due to the sample from that due to the support. For instance, it is possible to compute relative elemental concentrations in the sample, without standards, based on the relative net characteristic elemental intensities without regard to background; but to calculate absolute concentration, it is necessary to use the background signal itself as a measure of the total excited specimen mass.

Macromolecular structures of biological specimens are not obscured by controlled osmium impregnation

1983 ◽  
Vol 41 ◽  
pp. 606-607
Author(s):  
Klaus-Ruediger Peters ◽  
Samuel A. Green
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Critical Point ◽  
Metal Films ◽  
High Magnification ◽  
Osmium Impregnation ◽  
Instrumental Resolution ◽  
20 Nm ◽  
Continuous Metal

High magnification imaging of macromolecules on metal coated biological specimens is limited only by wet preparation procedures since recently obtained instrumental resolution allows visualization of topographic structures as smal l as 1-2 nm. Details of such dimensions may be visualized if continuous metal films with a thickness of 2 nm or less are applied. Such thin films give sufficient contrast in TEM as well as in SEM (SE-I image mode). The requisite increase in electrical conductivity for SEM of biological specimens is achieved through the use of ligand mediated wet osmiuum impregnation of the specimen before critical point (CP) drying. A commonly used ligand is thiocarbohvdrazide (TCH), first introduced to TEM for en block staining of lipids and glvcomacromolecules with osmium black. Now TCH is also used for SEM. However, after ligand mediated osinification nonspecific osmium black precipitates were often found obscuring surface details with large diffuse aggregates or with dense particular deposits, 2-20 nm in size. Thus, only low magnification work was considered possible after TCH appl ication.

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