EFFECT OF SURFACE CONDITION AND PRIOR PLASTIC DEFORMATION ON X-RAY EFFECTIVE ELASTIC PARAMETERS IN A STEEL AND ITS WELD

On the example of Hadfield steel, as the most common material of fast-wearing parts of mining equipment, the effect of surface hardening by plastic deformation on their impact and abrasive wear resistance is considered. Wear test is conducted on magnetic ironstone as typical representative of abrasive and hard rock. As result of wear of initial samples with hardness of ∼200 HB and samples pre-hardened with different intensities to the hardness of 300, 337 and 368 HB, it is found that during the initial testing period, the initial samples pass the “self-cold-work hardening” stage with increase in hardness to ∼250 HB, which remains virtually unchanged during further tests; the hardness of the pre-hardened samples does not change significantly throughout the tests. It is established that the rate of impact-abrasive wear of pre-hardened samples is significantly (up to 1.4 times) lower than the original ones that are not subjected to plastic deformation, and decreases with increasing degree of cold-work hardening. Preliminary surface hardening by plastic deformation can serve as effective way to increase the service life of fast-wearing working parts of mining equipment.

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Geometrical model for calculating the effect of surface morphology on total x‐ray output of medical x‐ray tubes

Medical Physics ◽

10.1002/mp.14649 ◽

2020 ◽

Author(s):

Maximilian Siller ◽

Mika Minkkinen ◽

Pamela Bogust ◽

Alexander Jelinek ◽

Jürgen Schatte ◽

...

Keyword(s):

Surface Morphology ◽

Geometrical Model ◽

X Ray ◽

Effect Of Surface

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Comment on "Effect of Surface Condition on Oxygen Self-Diffusion Coefficients in Single-Crystal Al2O3" and "Effect of Ratio of Surface Area to Volume on Oxygen Self-Diffusion Coefficients Determined for Crushed MgO-Al2O3Spinels"

Journal of the American Ceramic Society ◽

10.1111/j.1151-2916.1984.tb19695.x ◽

1984 ◽

Vol 67 (12) ◽

pp. C-269-C-271 ◽

Cited By ~ 2

Author(s):

Paul F. Dennis ◽

John A. Kilner

Keyword(s):

Single Crystal ◽

Surface Area ◽

Diffusion Coefficients ◽

Surface Condition ◽

Self Diffusion ◽

Effect Of Surface

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Influence of Severe Plastic Deformation on Physicomechanical Properties of Ti-40 mas % Nb Alloy

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.685.525 ◽

2016 ◽

Vol 685 ◽

pp. 525-529

Author(s):

Zhanna G. Kovalevskaya ◽

Margarita A. Khimich ◽

Andrey V. Belyakov ◽

Ivan A. Shulepov

Keyword(s):

Plastic Deformation ◽

Severe Plastic Deformation ◽

Cold Working ◽

Young Modulus ◽

Physicomechanical Properties ◽

X Ray Diffraction ◽

Refined Grains ◽

X Ray ◽

Initial Alloy ◽

Composition Structure

The changes of the phase composition, structure and physicomechanical properties of Ti‑40 mas % Nb after severe plastic deformation are investigated in this paper. By the methods of microstructural, X-ray diffraction analysis and scanning electron microscopy it is determined that phase and structural transformations occur simultaneously in the alloy after severe plastic deformation. The martensitic structure formed after tempering disappears. The inverse α'' → β transformation occurs. The structure consisting of oriented refined grains is formed. The alloy is hardened due to the cold working. The Young modulus is equal to 79 GPa and it is less than that of initial alloy and close to the value obtained after tempering. It is possible that Young modulus is reduced by additional annealing.

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Kinematic theory of the effect of surface relaxation on X-ray diffraction peak shifts

Surface Science ◽

10.1016/0039-6028(73)90167-2 ◽

1973 ◽

Vol 38 (2) ◽

pp. 357-372 ◽

Cited By ~ 2

Author(s):

Ralph T.S. Shiah ◽

R.W. Vook

Keyword(s):

Diffraction Peak ◽

Surface Relaxation ◽

X Ray Diffraction ◽

X Ray ◽

Kinematic Theory ◽

Effect Of Surface

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Effect of Surface Chemistry on Ruthenium Wet Etching

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.314.302 ◽

2021 ◽

Vol 314 ◽

pp. 302-306

Author(s):

Quoc Toan Le ◽

E. Kesters ◽

M. Doms ◽

Efrain Altamirano Sánchez

Keyword(s):

Surface Roughness ◽

Photoelectron Spectroscopy ◽

Etching Rate ◽

Wet Etching ◽

X Ray ◽

Force Microscopy ◽

Metal Free ◽

Atomic Force ◽

Different Types ◽

Effect Of Surface

Different types of ALD Ru films, including as-deposited, annealed Ru, without and with a subsequent CMP step, were used for wet etching study. With respect to the as-deposited Ru, the etching rate of the annealed Ru film in metal-free chemical mixtures (pH = 7-9) was found to decrease substantially. X-ray photoelectron spectroscopy characterization indicated that this behavior could be explained by the presence of the formation of RuOx (x = 2,3) caused by the anneal. A short CMP step applied to the annealed Ru wafer removed the surface RuOx, at least partially, resulting in a significant increase of the etching rate. The change in surface roughness was quantified using atomic force microscopy.

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Texture Development in a Model Al-Li Alloy Subjected to Severe Plastic Deformation

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.114.337 ◽

2006 ◽

Vol 114 ◽

pp. 337-344 ◽

Cited By ~ 2

Author(s):

Bogusława Adamczyk-Cieślak ◽

Jaroslaw Mizera ◽

Krzysztof Jan Kurzydlowski

Keyword(s):

Plastic Deformation ◽

Severe Plastic Deformation ◽

Equal Channel Angular Extrusion ◽

Orientation Distribution ◽

X Ray Diffraction ◽

Technological Parameters ◽

Initial State ◽

Texture Characteristic ◽

X Ray ◽

Ultrafine Grained

The texture of Al – 0.7 wt. % Li alloy processed by two different methods of severe plastic deformation (SPD) has been investigated by X-ray diffraction, and analyzed in terms of the orientation distribution function (ODF). It was found that severe plastic deformation by both Equal Channel Angular extrusion (ECAE) and Hydrostatic Extrusion (HE) resulted in an ultrafine grained structure in an Al – 0.7 wt. % Li alloy. The microstructure, grain shape and size, of materials produced by SPD strongly depend on the technological parameters and methods applied. The texture of the investigated alloy differed because of the different modes of deformation. In the initial state the alloy exhibited a very strong texture consisting of {111} fibre component. A similar fibrous texture characteristic was also found after HE whereas after the ECAE the initial texture was completely changed.

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