Improving the Tribological Properties of Self-Lubricating Al-Sn Alloys by their Severe Plastic Processing

2013 ◽  
Vol 379 ◽  
pp. 110-114 ◽  
Author(s):  
N.M. Rusin ◽  
A.L. Skorentsev
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Equal Channel Angular Pressing ◽  
Tribological Properties ◽  
Structure And Properties ◽  
Angular Pressing ◽  
Plastic Processing ◽  
Interphase Boundaries ◽  
Sintered Alloys

The influence of equal channel angular pressing by route A on the structure and properties of sintered Al-40Sn alloys was investigated. It was founded that the microstructure of sintered alloys very strong correlated with the type of initial powders that, nevertheless, not affects on mechanical properties of sintered alloys. The sintered structure of alloys was transformed in the layered one, using the pressing. It results in the square of interphase boundaries enlarging that gives to Al-40Sn alloys some additional strengthening and wear resistance.

Equal Channel Angular Pressing, its Effect on Structure and Properties of the Constructional Steel St3

2006 ◽  
Vol 114 ◽  
pp. 97-100 ◽  
Author(s):  
Maria Borisova ◽  
Sofia P. Yakovleva ◽  
Afanasiy M. Ivanov
Keyword(s):  
Mechanical Properties ◽  
Equal Channel Angular Pressing ◽  
Microstructure Evolution ◽  
Constructional Steel ◽  
Suitable Method ◽  
Structure And Properties ◽  
Angular Pressing ◽  
Steel St3

The steel St3 was processed by equal channel angular pressing. The structure and properties of the steel after two ECAP passes were determined. The different routes (Bc and C) resulted in different microstructure evolution during the equal channel angular pressing. It has been shown that equal channel angular pressing is a very suitable method for produce materials with good mechanical properties.

Structure and properties of copper M0b after combined plastic deformation

2021 ◽  
pp. 21-27
Author(s):  
L. F. Sennikova ◽  
G. K. Volkova ◽  
V. M. Tkachenko ◽  
A. N. Gangalo
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Equal Channel Angular Pressing ◽  
Physical And Mechanical Properties ◽  
Structure And Properties ◽  
Angular Pressing

The paper presents the results of studies of the structure and physical and mechanical properties of copper M0b after combined plastic deformation under different schemes of equal channel angular pressing (ECAP) and upsetting or ECAP and multi upsetting. Comparative characteristics of the structure, hardness and deformational decompaction of copper are given. Interesting to note that after ECAP and multi upsetting treatment, a deeper development of the structure has been observed.

scholarly journals Effects of equal channel angular pressing and heat treatments on the microstructures and mechanical properties of selective laser melted and cast AlSi10Mg alloys

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Przemysław Snopiński ◽  
Mariusz Król ◽  
Marek Pagáč ◽  
Jana Petrů ◽  
Jiří Hajnyš ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Equal Channel Angular Pressing ◽  
Heat Treatments ◽  
Electron Backscattered Diffraction ◽  
Angular Pressing ◽  
Low Temperature Annealing ◽  
Transmission Electron ◽  
Before And After ◽  
The Impact

AbstractThis study investigated the impact of the equal channel angular pressing (ECAP) combined with heat treatments on the microstructure and mechanical properties of AlSi10Mg alloys fabricated via selective laser melting (SLM) and gravity casting. Special attention was directed towards determining the effect of post-fabrication heat treatments on the microstructural evolution of AlSi10Mg alloy fabricated using two different routes. Three initial alloy conditions were considered prior to ECAP deformation: (1) as-cast in solution treated (T4) condition, (2) SLM in T4 condition, (3) SLM subjected to low-temperature annealing. Light microscopy, transmission electron microscopy, X-ray diffraction line broadening analysis, and electron backscattered diffraction analysis were used to characterize the microstructures before and after ECAP. The results indicated that SLM followed by low-temperature annealing led to superior mechanical properties, relative to the two other conditions. Microscopic analyses revealed that the partial-cellular structure contributed to strong work hardening. This behavior enhanced the material’s strength because of the enhanced accumulation of geometrically necessary dislocations during ECAP deformation.

scholarly journals Influence of Applied Bias Voltage on the Composition, Structure, and Properties of Ti:Si-Codoped a-C:H Films Prepared by Magnetron Sputtering

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jinlong Jiang ◽  
Qiong Wang ◽  
Yubao Wang ◽  
Zhang Xia ◽  
Hua Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Magnetron Sputtering ◽  
Bias Voltage ◽  
Tribological Properties ◽  
Structure And Properties ◽  
Applied Bias ◽  
Applied Bias Voltage ◽  
Methane Mixture ◽  
Composition Structure

The titanium- and silicon-codoped a-C:H films were prepared at different applied bias voltage by magnetron sputtering TiSi target in argon and methane mixture atmosphere. The influence of the applied bias voltage on the composition, surface morphology, structure, and mechanical properties of the films was investigated by XPS, AFM, Raman, FTIR spectroscopy, and nanoindenter. The tribological properties of the films were characterized on an UMT-2MT tribometer. The results demonstrated that the film became smoother and denser with increasing the applied bias voltage up to −200 V, whereas surface roughness increased due to the enhancement of ion bombardment as the applied bias voltage further increased. The sp3carbon fraction in the films monotonously decreased with increasing the applied bias voltage. The film exhibited moderate hardness and the superior tribological properties at the applied bias voltage of −100 V. The tribological behaviors are correlated to the H/E or H3/E2ratio of the films.

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