Experimental techniques for the plastic deformation of metal foils in the electron microscope

1960 ◽  
pp. 559-562
Author(s):  
H. G. F. Wilsdorf ◽  
L. Cinquina ◽  
C. J. Varker
Keyword(s):  
Plastic Deformation ◽  
Electron Microscope ◽  
Experimental Techniques ◽  
Metal Foils

Electron microscope studies of the plastic deformation of ternary alloys based on GaAs

1990 ◽  
Vol 48 (4) ◽  
pp. 1120-1120
Author(s):  
R. Haswell ◽  
U. Bangert ◽  
P. Charsley
Keyword(s):  
Plastic Deformation ◽  
Electron Microscope ◽  
Room Temperature ◽  
Stacking Faults ◽  
The Other ◽  
Ternary Alloys ◽  
Dislocation Mobility ◽  
Semiconducting Materials ◽  
Micro Indentation

A knowledge of the behaviour of dislocations in semiconducting materials is essential to the understanding of devices which use them . This work is concerned with dislocations in alloys related to the semiconductor GaAs . Previous work on GaAs has shown that microtwinning occurs on one of the <110> rosette arms after indentation in preference to the other . We have shown that the effect of replacing some of the Ga atoms by Al results in microtwinning in both of the rosette arms.In the work to be reported dislocations in specimens of different compositions of Gax Al(1-x) As and Gax In(1-x) As have been studied by using micro indentation on a (001) face at room temperature . A range of electron microscope techniques have been used to investigate the type of dislocations and stacking faults/microtwins in the rosette arms , which are parallel to the [110] and [10] , as a function of composition for both alloys . Under certain conditions microtwinning occurs in both directions . This will be discussed in terms of the dislocation mobility.

Influence of Aging Treatments on the Structural and Mechanical Properties of AGS Alloy Wire Cold Drawn

2018 ◽  
Vol 18 ◽  
pp. 73-78
Author(s):  
Mokhtar Bayarassou ◽  
Mosbah Zidani ◽  
Hichem Farh
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Electron Microscope ◽  
Artificial Ageing ◽  
Micro Hardness ◽  
X Ray Diffraction ◽  
Alloy Wire ◽  
X Ray ◽  
Plastic Deformation Rate ◽  
Scanning Electron

The scope of this work is to study of microstructural changes and mechanical properties during natural and artificial ageing treatment of AGS Alloy wire cold drawn with different deformation at ENICAB in Biskra. And as well to know the phase formation during different deformation of aluminum alloys wires. as well as the combined influence of the plastic deformation rate and the aging temperature. Wire section reduction shows a change in microstructure and texture. The methods of characterization used in this work are: scanning electron microscope and X-ray diffraction, micro hardness (Hv).

Characteristic Structure of Cu-0.8Cr Alloy Using SPD Deformation by Rolling with Cyclic Movement of Rolls Method

2016 ◽  
Vol 682 ◽  
pp. 3-9 ◽  
Author(s):  
Anna Urbańczyk-Gucwa ◽  
Kinga Rodak ◽  
Adam Płachta ◽  
Joanna Sobota ◽  
Zbigniew Rdzawski
Keyword(s):  
Plastic Deformation ◽  
Electron Microscope ◽  
Severe Plastic Deformation ◽  
Scanning Transmission Electron Microscope ◽  
Characteristic Structure ◽  
Quantitative Studies ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Cyclic Movement ◽  
Deformation By Rolling

The results of the microstructure and hardness investigations of the Cu-0.8Cr alloy after application of severe plastic deformation (SPD) implemented by rolling with the cyclic movement of rolls (RCMR) are presented in this paper. Performed substructure investigations showed that using the RCMR method can refine the microstructure of Cu-0.8Cr alloy to the ultrafine scale. The structure of the Cu-0.8Cr alloy was analyzed using light microscope (LM) and scanning transmission electron microscope (STEM). The quantitative studies of the substructure was performed with "MET-ILO" software, on the basis of images acquired on STEM microscope.

New technique for determining the heating effects of the electron beam on metal foils in an electron microscope

1975 ◽  
Vol 46 (8) ◽  
pp. 1092-1094 ◽  
Author(s):  
William F. Lewis ◽  
Jordi Marti ◽  
David I. Paul
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
New Technique ◽  
Metal Foils ◽  
Heating Effects

Particle Size Measurement of Rubber Latices

1983 ◽  
Vol 56 (3) ◽  
pp. 664-676 ◽  
Author(s):  
A. D. T. Gorton ◽  
T. D. Pendle
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Experimental Techniques ◽  
Size Measurement ◽  
Photon Correlation ◽  
Particle Size Measurement ◽  
Polymer Latices ◽  
Routine Investigations

Abstract It is obvious that there are a wide variety of experimental techniques available for the examination of the particle size in polymer latices. Some of these are well-established, such as the electron microscope, while others, such as chromato-graphic and photon correlation methods, are relatively new. Some systems are used for routine investigations of particle size distribution while others appear to be largely academic. Different methods yield diverse information with regard to the particles, and some are plainly unsuitable for latices with marked polydispersity. In order to summarize the various methods and the information they supply, Table I has been provided. This is an attempt to show, in a simplified manner, the chief features of the various techniques described above. It is hoped that this will be of value both to those established in this field and those beginning to lake an interest in the particle size of polymer latices.

scholarly journals Effect of Liquid Ga on Metal Surfaces: Characterization of Morphology and Chemical Composition of Metals Heated in Liquid Ga

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Eun Je Lee ◽  
Min Goo Hur ◽  
Jeong Mun Son ◽  
Jeong Hoon Park ◽  
Seung Dae Yang
Keyword(s):  
Electron Microscope ◽  
Chemical Composition ◽  
Chemical Resistance ◽  
Maximum Amount ◽  
Liquid Gallium ◽  
Heating Process ◽  
X Ray ◽  
Metal Foils ◽  
Scanning Electron

This study investigates the effect of liquid gallium (Ga) on metal foils made of titanium (Ti), niobium (Nb), and molybdenum (Mo). The Ti, Nb, and Mo foils were heated in liquid Ga at 120°C for a maximum of two weeks. After heating, the changes in the morphology and the chemical composition of the metal foils were analyzed by using a field emission scanning electron microscope, energy-dispersive X-ray spectrometer, X-ray diffractometer, and X-ray photoelectron spectrometer. The results of the analysis indicated that the Nb foil showed the minimum adhesion of liquid Ga to the surface while the maximum amount of liquid Ga was observed to adhere to the Ti foil. In addition, the Nb foil was oxidized and the Mo foil was reduced during the heating process. Considering these effects, we conclude that Mo may be used as an alternative encapsulation material for Ga in addition to Nb, which is used as the conventional encapsulation material, due to its chemical resistance against oxidation in hot liquid Ga.

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