Influence of CaO on the Nanohardness Behaviour of AZ63 Magnesium Alloys Produced by Mechanical Alloying Method

Boztas, M.; Özarslan, Selma; Şahin, O.

doi:10.12693/aphyspola.130.357

Cited by 2 publications

(1 citation statement)

References 17 publications

(28 reference statements)

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“…For this we used a small load of HV0.1 (0.9807N), in which the distance between the two measuring points was 50 µm, while the load time was 10 s [9][10][11]. The total number of points in the sample was between 15 and 30 (depending on the nitriding parameters, i.e.…”

Section: Methodsmentioning

confidence: 99%

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

2017

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This work is an experimental study of the hardness curve in the zone of diffusion for the gas nitriding process of 31CrMoV9 steel. 12 samples were subjected to gas nitriding at three different temperatures -510• C, 550• C, and 590• C -and for each temperature four different nitriding times were used. Hardness was measured with an automatic microhardness tester PCE from LECO with a load of HV0.1 (0.9807N), and the distance between the points was 50 µm. It was found that the hardness of the diffusion layer changed from 602 HV to 787 HV. The maximum surface hardness was found at 510• C after nitriding for 16 h. Depending on the process parameters, the depth of the diffusion layer ranged from 270 µm to 700 µm. From the results we can draw conclusions for the gradient curve of nitriding parameters, and from each curve we can find the depth of the diffusion of nitrogen in steel.

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Section: Methodsmentioning

confidence: 99%

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

2017

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The depth of the diffusion of nitrogen in 16MnCr5 steel after gas nitriding

SylaNaim

Aliaj

DalipiBashkim³

et al. 2022

Emerging Materials Research

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This research aims to determine the depth of diffusion of nitrogen in steel 16MnCr5 after gas nitriding. Nitriding was performed in the ammonia atmosphere at three temperatures (510, 550 and 590°C), with four different durations for each temperature. The research techniques were metallographic and electron probe micro-analysis (EPMA). According to the first method, with the optical microscope Neophot 30 of the firm Carl Zeiss Jena, the surfaces of all samples were observed. The nitriding layers were photographed with the help of a microscope, from which the depths of nitrogen diffusion were determined. The hardness-depth profiles of nitride specimens were determined with a Vickers automatic micro-hardness tester from LECO, and the distance between two consecutive points was 50 μm. The depth of nitrogen diffusion into the nitride samples was determined from the hardness curves. The nitrogen concentration-depth profiles of the nitrided specimens were determined with EPMA using a Joel JXA-8900RL microanalyser operated at 20 kV. A comparison of the results of the different experimental methods was made, which allowed conclusions to be made as regards the depth of nitrogen diffusion in 16MnCr5 steel.

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Influence of CaO on the Nanohardness Behaviour of AZ63 Magnesium Alloys Produced by Mechanical Alloying Method

Cited by 2 publications

References 17 publications

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

The depth of the diffusion of nitrogen in 16MnCr5 steel after gas nitriding

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