Results 21 to 30 of about 958 (181)

Evaluation of electrochemical impedance and biocorrosion characteristics of as-cast and T4 heat treated AZ91 Mg-alloys in Ringer's solution

open access: yesJournal of Magnesium and Alloys, 2019
The present study aims at understanding the electrochemical impedance and biocorrosion characteristics of AZ91 Mg-alloy in Ringer's solution. As-cast AZ91 Mg-alloy was subjected to T4 heat treatment in a way to homogenize its microstructure by dissolving
Nagaraj M. Chelliah   +2 more
doaj   +1 more source

Comprehensive Research of FSW Joints of AZ91 Magnesium Alloy

open access: yesMaterials, 2023
For the friction stir welding (FSW) of AZ91 magnesium alloy, low tool rotational speeds and increased tool linear speeds (ratio 3.2) along with a larger diameter shoulder and pin are utilized. The research focused on the influence of welding forces and the characterization of the welds by light microscopy, scanning electron microscopy with an electron ...
Krzysztof Mroczka   +6 more
openaire   +2 more sources

Scratch Test Studies on the Connection of Al2O3+40%TiO2 Coating with AZ91 Alloy Casting [PDF]

open access: yesArchives of Foundry Engineering
The paper presents the results of scratch tests on the connection of the Al2O3+40%TiO2 coating with the AZ91 alloy casting. The Al2O3+40%TiO2 coating was applied to the AZ91 alloy casting using the APS (Atmospheric Plasma Spraying) method. Microstructure
S. Olszewska, M. Mróz
doaj   +1 more source

Microstructure and mechanical properties of AZ91-(SiCP/AZ91) clad plate fabricated by extrusion

open access: yesCailiao gongcheng, 2023
Multilayered AZ91-(SiCP/AZ91) clad plates were fabricated at 300, 350 ℃ and 400 ℃ successfully by extrusion. The microstructure evolution, bonding interface and the mechanical properties of the AZ91-(SiCP/AZ91) clad plates were investigated in detail ...
CHANG Hai, ZHAO Congming, WANG Cuiju
doaj   +1 more source

Effect of Rare Earth on Corrosion Products and Impedance Behavior of AZ91 Magnesium Alloy Under Dry-wet Cycles

open access: yesCailiao gongcheng, 2017
The effect of mischmetal of lanthanum and cerium on the composition and structure of the corrosion products on the surface of AZ91 Mg alloy in deicing salt solution under dry-wet cycles was investigated by scanning electron microscopy (SEM), X-ray ...
ZHAO Xi   +3 more
doaj   +1 more source

Microstructure and surface integrity of machined AZ91 magnesium alloy

open access: yesJournal of Materials Research and Technology, 2023
AZ91 magnesium alloy is one of the most popular materials among all cast magnesium alloys due to its excellent corrosion resistance and good cast-ability.
A. Asgari, H. Delavar, M. Sedighi
doaj   +1 more source

Microstructure and mechanical properties of AZ91 magnesium alloy with minor additions of Sm, Si and Ca elements [PDF]

open access: yesChina Foundry, 2019
The effects of Sm, Si and Ca on the microstructure and mechanical property of AZ91 magnesium alloy were investigated by means of optical microscopy (OM), differential scanning calorimetry (DSC), scanning electronic microscopy (SEM), X-ray diffraction ...
Redeemina Comfort Bonnah, Yu Fu, Hai Hao
doaj   +1 more source

The Effects of Rare Earth Pr and Heat Treatment on the Wear Properties of AZ91 Alloy

open access: yesCrystals, 2018
This paper investigated the influences of Pr addition and heat treatment (T6) on the dry sliding wear behavior of AZ91 alloy. The wear rates and friction coefficients were measured by using a pin-on-disc tribometer under loads of 30, 60 and 90 N at dry ...
Ning Li, Hong Yan
doaj   +1 more source

The Evolution of Microstructure, Mechanical Properties and Fracture Behavior with Increasing Lanthanum Content in AZ91 Alloy

open access: yesMetals, 2020
AZ91 alloy is a widely applied commercial magnesium alloy due to its good castability, balanced mechanical properties and acceptable price, and lanthanum alloying has been proven to be one of the most effective methods to further improve its mechanical ...
Di Tie   +7 more
doaj   +1 more source

Effect of Pre-Heat Treatment on Microstructure and Properties of As-Extruded AZ91-CaO Alloy

open access: yesMetals, 2022
The effects of different pre-heat treatments on the microstructure, mechanical properties and corrosion resistance of extruded AZ91 and AZ91-CaO alloys were investigated.
Guopeng Zhang   +5 more
doaj   +1 more source

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