scholarly journals Optimisation of the high velocity oxygen fuel (HVOF) parameters to produce effective corrosion control coatings on AZ91 magnesium alloy

2014 ◽  
Vol 66 (5) ◽  
pp. 423-433 ◽  
Author(s):  
C. Taltavull ◽  
A. J. Lopez ◽  
B. Torres ◽  
A. Atrens ◽  
J. Rams
Keyword(s):  
Magnesium Alloy ◽  
High Velocity ◽  
High Velocity Oxygen Fuel ◽  
Corrosion Control ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium ◽  
Oxygen Fuel

Fe-Based Amorphous/Nanocrystalline Coating on AZ91 Magnesium Alloy Substrate Deposited by Automatic High Velocity Arc Spraying

2011 ◽  
Vol 418-420 ◽  
pp. 786-791 ◽  
Author(s):  
Lin Lei Wang ◽  
Xiu Bing Liang ◽  
Shi Cheng Wei ◽  
Yong Xiong Chen ◽  
Wei Guo ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Elastic Modulus ◽  
Magnesium Alloy ◽  
High Velocity ◽  
Arc Spraying ◽  
Az91 Magnesium Alloy ◽  
X Ray ◽  
Nanocrystalline Coating ◽  
High Velocity Arc Spraying ◽  
Az91 Magnesium

An automatic high velocity arc spraying process was used to deposit a type of FeCrBSiMoNbW amorphous/nanocrystalline coating with substrate of AZ91 magnesium alloy. The microstructure of the coating was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) equipped with energy dispersive X-ray analysis (EDAX). The coating is about 250μm in thickness with low porosity and oxids. The results show that the microstructure of the coating can be classified into two regions, namely, a full amorphous phase region and homogeneous dispersion of α-Fe (Cr) nanocrystals with 30-80 nm in a residual amorphous region. Mechanical properties, such as nano-hardness, elastic modulus, were analyzed. The experimental results show that the coating has high nano-hardness and elastic modulus. The friction and wear experiments were operated on UMT-2 micro friction tester. The relative wear resistance of the FeCrBSiMoNbW coating is about 2 times higher than that of the conventional 3Cr13 coating under the same conditions. The main wear mechanism of the amorphous/nanocrystalline coating is the typical brittle spalling.

Tribological Properties of WC-12Co Coating on AZ91 Magnesium Alloy Fabricated by High Velocity Oxy-Fuel Spray

2014 ◽  
Vol 33 (1) ◽  
pp. 41-48 ◽  
Author(s):  
F. Yıldız
Keyword(s):  
Magnesium Alloy ◽  
Tribological Properties ◽  
High Velocity ◽  
Wear Behavior ◽  
Fuel Spray ◽  
Az91 Magnesium Alloy ◽  
Mechanical And Tribological Properties ◽  
Hardness Tester ◽  
Pin On Disc ◽  
Az91 Magnesium

AbstractIn this study, conventional WC-12Co cermet coatings were deposited on AZ91 magnesium alloy using High Velocity Oxy-Fuel spray method. The effects of different coating thicknesses (60 and 120 µm) and wear loads (20 and 30 N) on tribological properties of AZ91 magnesium alloy coated with WC-12Co were investigated. Structural, mechanical and tribological properties of WC-12Co coatings were analyzed by means of X-ray diffractometer, scanning electron microscope, micro-hardness tester and pin-on-disc tribotester. It was observed that WC-12Co coating is an effective method for improving the wear behavior of AZ91 magnesium alloy.

Effects of the drill flute number on drilling of a casted AZ91 magnesium alloy

2019 ◽  
Vol 61 (3) ◽  
pp. 260-266 ◽  
Author(s):  
Ugur Koklu ◽  
Sezer Morkavuk ◽  
Levent Urtekin
Keyword(s):  
Magnesium Alloy ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium

COLMONOY NO. 43HV

Alloy Digest ◽  
2008 ◽  
Vol 57 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
High Velocity ◽  
Base Alloy ◽  
Heat Treating ◽  
High Velocity Oxygen Fuel ◽  
Nickel Base Alloy ◽  
Nickel Base ◽  
Oxygen Fuel

Abstract Colmonoy No. 43HV comprises a nickel-base alloy recommended for hard surfacing parts to resist wear, corrosion, heat, and galling. Deposits that have moderate hardness have increased ductility and slightly less resistance to abrasion than Colmonoy 53HV. Deposits can be finished by grinding or machined with carbide tooling. Colmonoy No. 43HV is supplied as an atomized powder specially sized for application with high-velocity oxygen fuel (HVOF) systems. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance and surface qualities as well as heat treating and surface treatment. Filing Code: Ni-664. Producer or source: Wall Colmonoy Corporation.

Interfacial reaction in squeeze cast SICW/AZ91 magnesium alloy composite

1996 ◽  
Vol 35 (4) ◽  
pp. 529-534 ◽  
Author(s):  
Kun Wu ◽  
Mingyi Zheng ◽  
Min Zhao ◽  
Congkai Yao ◽  
Jihong Li
Keyword(s):  
Magnesium Alloy ◽  
Interfacial Reaction ◽  
Alloy Composite ◽  
Az91 Magnesium Alloy ◽  
Squeeze Cast ◽  
Az91 Magnesium

scholarly journals Investigation of the Influence of Open-Die Forging Parameters on the Flow Kinetics of AZ91 Magnesium Alloy

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4010
Author(s):  
Grzegorz Banaszek ◽  
Teresa Bajor ◽  
Anna Kawałek ◽  
Tomasz Garstka
Keyword(s):  
Magnesium Alloy ◽  
Operation Time ◽  
Strength Properties ◽  
Hydraulic Press ◽  
Az91 Alloy ◽  
Az91 Magnesium Alloy ◽  
Numerical Tests ◽  
Az91 Magnesium ◽  
Product Manufacturing ◽  
Open Die Forging

This paper presents the results of numerical tests of the process of forging magnesium alloy ingots (AZ91) on a hydraulic press with the use of flat and proprietary shaped anvils. The analysis of the hydrostatic pressure distribution and the deformation intensity was carried out. It is one of the elements used for determining the assumptions for the technology of forging to obtain a semi-finished product from the AZ91 alloy with good strength properties. The aim of the research was to reduce the number of forging passes, which will shorten the operation time and reduce the product manufacturing costs. Numerical tests of the AZ91 magnesium alloy were carried out using commercial Forge®NxT software.

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