Air Jet Erosion Behavior of AA 6082 T6 Aluminum Alloy

2020 ◽  
pp. 43-51
Author(s):  
Gyanesh Mangal ◽  
Vinod Kumar ◽  
Siddhartha
Keyword(s):  
Aluminum Alloy ◽  
Erosion Behavior ◽  
Air Jet

Cavitation erosion behavior of super-hydrophobic coatings on Al5083 marine aluminum alloy

Wear ◽  
2019 ◽  
Vol 424-425 ◽  
pp. 122-132 ◽  
Author(s):  
J. Fahim ◽  
S.M.M. Hadavi ◽  
H. Ghayour ◽  
S.A. Hassanzadeh Tabrizi
Keyword(s):  
Aluminum Alloy ◽  
Cavitation Erosion ◽  
Hydrophobic Coatings ◽  
Erosion Behavior

Erosion Behavior of Pulverized Coal Burner Nozzle Material Hardfaced by Solid Wire and Flux Cored Wire Electrode

2014 ◽  
Vol 808 ◽  
pp. 1-9
Author(s):  
Jarnail Singh ◽  
Hazoor Singh
Keyword(s):  
Gas Metal Arc Welding ◽  
Pulverized Coal ◽  
Wire Electrode ◽  
Cored Wire ◽  
Erosion Behavior ◽  
Air Jet ◽  
Metal Arc Welding ◽  
High Microhardness ◽  
Burner Nozzle ◽  
Pulverized Coal Burner

In present study, an attempt was made to reduce the erosion rate of the Pulverized coal burner nozzle material. For better resistant to erosion, material was hardfaced by Gas Metal Arc Welding (GMAW) by using solid wire electrode and flux cored wire electrode under same welding conditions. The substrate steel hardfaced with flux cored wire electrode resulted in high microhardness as compare to solid wire electrode. The erosion study was conducted, using an air jet erosion test rig at a particle velocity of 50 m/s. Ductile erosion behavior is observed in the case when the substrate steels is hardfaced with solid wire whereas brittle erosion behavior is observed when the substrate steels is hardfaced with flux cored wire. At a low angle of impingement, the abrasive type cutting is the dominating factor for material removal, and at a higher angle of impingement, impact-type as well as abrasive-type cutting actions play critical roles. Plastic deformation characterized by pitting and cutting action was also observed. Scanning electron microscopy (SEM) technique was used to analyze the eroded surface. It was concluded that damaged surfaces of Pulverized coal burner nozzle material can be successfully hardfaced and improvement in erosion resistance was observed.

Investigation of elevated temperature erosion mechanisms and erosion behavior of Waspaloy (superalloy) under hot air jet conditions

2020 ◽  
Author(s):  
K. G. Thirugnanasambantham ◽  
M. Pankajrishikesh ◽  
I. G. Vishal ◽  
A. Anton Rishab Sahaya ◽  
S. Sibi Nishanth ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Erosion Behavior ◽  
Hot Air ◽  
Air Jet ◽  
Erosion Mechanisms

Erosion behavior of B4C based ceramic nozzles by abrasive air-jet

2012 ◽  
Vol 38 (8) ◽  
pp. 6599-6605 ◽  
Author(s):  
Sun Junlong ◽  
Liu Changxia ◽  
Tian Jin ◽  
Feng Baofu
Keyword(s):  
Erosion Behavior ◽  
Air Jet

Effect of Prehot Corrosion on Erosion Behavior of High Chromium Ferritic Steel for Heat Exchangers

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Ankitendran Mishra ◽  
Dhananjay Pradhan ◽  
C. K. Behera ◽  
S. Mohan ◽  
A. Mohan
Keyword(s):  
Heat Exchangers ◽  
Hot Corrosion ◽  
Ferritic Steel ◽  
Passive Layer ◽  
Layer Formation ◽  
Salt Mixture ◽  
Erosion Behavior ◽  
Air Jet ◽  
Erosion Test ◽  
The Impact

This study presents the prehot corrosion effect on erosion behavior of AISI 446 SS in simulated heat exchanger environment at elevated temperature. Samples were spray deposited using two salt mixture (Na2SO4/NaCl). Subsequently, low-temperature hot corrosion tests were carried out at 550, 650, and 750 °C for 20 h. Chlorination followed by sulfidation was mainly responsible for the passive layer formation during the process of hot corrosion. The prehot corroded samples were subjected to air-jet erosion test using alumina as the erodent, at impact velocity of 100 m/s and flux rate of 4.2 g/min, with variable impingement angles of 30 deg, 60 deg, and 90 deg. The passive layer formed during corrosion underwent detachment of metallic flakes through cracking during the impact of erodent, and was responsible for a significant change in erosion rate. Cutting, plowing, lip formation, and particle embedment were identified as the operative mechanisms during erosion.

Techniques for Transmission Electron Microscopy of Fiber-Matrix Interfaces in Aluminum Alloy-Boron Composites by Ion Erosio

1971 ◽  
Vol 29 ◽  
pp. 204-205
Author(s):  
G. G. Shaw
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Aluminum Alloy ◽  
Electron Beam ◽  
Pure Aluminum ◽  
Ion Milling ◽  
Transmission Electron ◽  
Fiber Matrix ◽  
Ion Erosion ◽  
Row Of Fibers

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.

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