scholarly journals The Role of the Assist Gas Nature in Laser Cutting of Aluminum Alloys

2011 ◽  
Vol 12 ◽  
pp. 548-554 ◽  
Author(s):  
A. Riveiro ◽  
F. Quintero ◽  
F. Lusquiños ◽  
R. Comesaña ◽  
J. del Val ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Laser Cutting

The Role of Oxidation in Laser Cutting Stainless and Mild Steel

1991 ◽  
Vol 3 (3) ◽  
pp. 41-45 ◽  
Author(s):  
A. Ivarson ◽  
J. Powell ◽  
C. Magnusson
Keyword(s):  
Mild Steel ◽  
Laser Cutting

The role of magnesium in CF and SCC of 7000 series aluminum alloys

1984 ◽  
Vol 18 (11) ◽  
pp. 1195-1198 ◽  
Author(s):  
R.P. Wei ◽  
Ming Gao ◽  
P.S. Pao
Keyword(s):  
Aluminum Alloys

Research of corrosion fracture of D16t and AMg6 aluminum alloys exposed to microscopic fungi

2021 ◽  
pp. 163-183
Author(s):  
D. V. Belov ◽  
S. N. Belyaev ◽  
M. V. Maksimov ◽  
G. A. Gevorgyan
Keyword(s):  
Hydrogen Peroxide ◽  
Aluminum Alloys ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Corrosion Damage ◽  
Oxygen Species ◽  
Microscopic Fungi ◽  
Reductive Activation ◽  
Activation Of Oxygen

This paper presents an experimental study of biocorrosion of D16T and AMg6 aluminum alloys. The determining role of reactive oxygen species in aluminum biocorrosion by a consortium of molds has been shown. A model is proposed, according to which the initiators of corrosion damage to the metal surface are superoxide anion radical and hydrogen peroxide released during the life of micromycetes. It is assumed that the initiation and development of biocorrosion occurs, among other things, as a result of the process of reductive activation of oxygen and the Fenton decomposition of hydrogen peroxide. A conclusion is made about the mechanism of the occurrence of intergranular and pitting corrosion of aluminum alloys interacting with microscopic fungi.

scholarly journals Comparison of Different Types of Cutting Devices in Surgery (Review)

2018 ◽  
Vol 7 (4.38) ◽  
pp. 538
Author(s):  
Victor Aleksandrovich Stupin ◽  
Natalia Evgenievna Manturova ◽  
Aleksei Alekseevich Donskikh ◽  
Ekaterina Vladimirovna Silina
Keyword(s):  
Comparative Analysis ◽  
Plastic Surgery ◽  
Laser Cutting ◽  
Optimal Choice ◽  
Ultrasonic Scalpel ◽  
Different Types ◽  
Skin Surgery ◽  
Choice Of Instruments ◽  
Physical Principles

The present work presents a description of various cutting devices with an emphasis on skin surgery for the optimal choice of instruments in plastic surgery. Physical principles of work with a description of the biological role of an ultrasonic scalpel, various laser cutting devices, electrosurgical instruments, including radiofrequency electrosurgery, are described. Studies of recent years, including systematic reviews and meta-analyzes, are devoted to comparative analysis of various cutting and coagulating devices among themselves and in comparison with the mechanical metal scalpel. 

Early precipitation stages of aluminum alloys—The role of quenched-in vacancies

2008 ◽  
Vol 255 (1) ◽  
pp. 132-135 ◽  
Author(s):  
Torsten E.M. Staab ◽  
Matz Haaks ◽  
Hartwig Modrow
Keyword(s):  
Aluminum Alloys

CFD Study on the Role of Gas Friction on the Molten Layer Shape and Melt Removal Mechanism in Laser Cutting Process of Steel

2013 ◽  
Vol 856 ◽  
pp. 220-225 ◽  
Author(s):  
Karim Kheloufi ◽  
El Hachemi Amara
Keyword(s):  
Friction Force ◽  
Laser Cutting ◽  
Cutting Process ◽  
Gradient Force ◽  
Pressure Gradient Force ◽  
Central Plane ◽  
Removal Mechanism ◽  
Molten Layer ◽  
Wavy Structure

A numerical analysis of the role of the gas friction force on the shape of the melt surface in laser cutting process is carried out. The liquid film shape is analyzed in the central plane of cutting for both cases with the pressure gradient force only and for the case of gas friction force contribution. It is shown that, the gas friction force has a significant role in the formation of humps in the central kerf zone and the transition from the smooth melt ejection regime to a wavy structure characterized by humps formation.

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