scholarly journals Surface Laser Quenching as an Alternative Method for Conventional Quenching and Tempering Treatment of 1538 MV Steel

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
R. Carrera-Espinoza ◽  
A. Rojo Valerio ◽  
J. del Prado Villasana ◽  
J. A. Yescas Hernández ◽  
P. Moreno-Garibaldi ◽  
...  
Keyword(s):  
Laser Treatment ◽  
Sliding Wear ◽  
Metallic Materials ◽  
Laser Quenching ◽  
Tempering Treatment ◽  
Surface Laser ◽  
Pin On Disk ◽  
Disk Method ◽  
Quenching And Tempering ◽  
Wear Tests

This paper aims at encouraging the use of laser treatment as an environmentally friendly technique to improve the mechanical properties of metallic materials over conventional quenching and tempering techniques through the study of the tribological behavior of AISI 1538 MV steel subjected to surface laser quenching treatment. Sliding wear tests were carried out by the pin-on-disk method. In order to identify the wear mechanisms, the worn surfaces on the disks were evaluated by scanning electron microscopy and the wear scars on the ball were observed by optical microscopy. Results reveal that laser treatment reduces the average friction coefficient by 25% and the wear rate by 60% compared with those achieved by the conventional methods, while the depths of the wear track and hardness of the cross section and surface are maintained.

Wear Characteristics of Low Temperature Degradation-Free Zirconia/Alumina Composites in a Point Contact Condition

2007 ◽  
Vol 342-343 ◽  
pp. 557-560
Author(s):  
Kwon Yong Lee ◽  
Hwan Kim ◽  
D.W. Kim ◽  
Dae Joon Kim ◽  
Myung Hyun Lee ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Bovine Serum ◽  
Sliding Wear ◽  
Point Contact ◽  
Dry Sliding Wear ◽  
Sliding Motion ◽  
Alumina Composites ◽  
Pin On Disk ◽  
Wear Tests

The sliding wear of four different compositions of novel low temperature degradation-free zirconia/alumina (LTD-free Z/A) composites were characterized in a ceramicceramic point contact pair. The wear tests were performed by a pin-on-disk type wear tester in a linear reciprocal sliding motion with a point contact in both dry and bovine serum lubricated conditions at room temperature. For the dry sliding wear tests, AZ-2 (20 vol% (Y,Nb,Ce)-TZP/ 80 vol% Al2O3) showed the best wear resistance among four kinds of LTD-free Z/A composites. For the bovine serum lubricated sliding wear tests, wear was too little to be measured for all kinds of Z/A composites. These novel LTD-free Z/A composites having excellent wear resistance demonstrated a potential as the alternative materials for the ceramic- ceramic contact pairs of femoral head and acetabular liner in total hip replacement.

scholarly journals Influence of Titanium on Crystallization and Wear Resistance of High Chromium Cast Iron

2016 ◽  
Vol 16 (1) ◽  
pp. 117-123 ◽  
Author(s):  
A. Studnicki ◽  
R. Dojka ◽  
M. Gromczyk ◽  
M. Kondracki
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Primary Crystallization ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Pin On Disk ◽  
Chromium Cast Iron ◽  
Disk Method ◽  
Wear Tests

Abstract Paper presents the results of studies on primary crystallization and wear resistance of high chromium cast iron inoculated with ferrotitanium intended for work in abrasive conditions. Primary crystallization was examined with use of TDA method, wear tests of the samples were conducted using the modified pin-on-disk method.

Wear of Low Temperature Degradation-Free Zirconia/Alumina Composites in a Ceramic-Ceramic Contact Pair

2006 ◽  
Vol 309-311 ◽  
pp. 1265-1268 ◽  
Author(s):  
Kwon Yong Lee ◽  
Hwan Kim ◽  
Dae Joon Kim ◽  
Myung Hyun Lee ◽  
Won Seon Seo
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Bovine Serum ◽  
Sliding Wear ◽  
Contact Pair ◽  
Dry Sliding Wear ◽  
Sliding Motion ◽  
Alumina Composites ◽  
Pin On Disk ◽  
Wear Tests

The sliding wear behaviors of three different compositions of novel low temperature degradation-free zirconia/alumina (LTD-free Z/A) composites were examined in a ceramicceramic contact pair. The wear tests were performed by using a pin-on-disk type wear tester in a linear reciprocal sliding motion with a line contact in both dry and bovine serum lubricated conditions at room temperature. From the results of dry sliding wear tests, Z/A#1 ((5.3Y,4.6Nb)-TZP/80 vol% Al2O3) showed the best wear resistance among three kinds of LTD-free Z/A composites. For the bovine serum lubricated sliding wear tests, wear was too little to be measured for all kinds of Z/A composites. These novel LTD-free Z/A composites having excellent wear resistance demonstrated a potential as the alternative materials for the ceramicceramic contact pairs of femoral head and acetabular liner in total hip replacement.

Sliding Wear of Metallic Materials at 25 and 550 ºC.

1988 ◽  
Vol 140 ◽  
Author(s):  
A. Fischer
Keyword(s):  
Sliding Wear ◽  
Metallic Materials ◽  
Hard Phase ◽  
Wear Rates ◽  
Wear Tests

AbstractA new wear tester for temperatures up to 1100ºC is introduced. Firstresults of sliding wear tests are shown and discussed. Due to enhanced tribooxidation at 550ºC the wear rates of one-phase materials are lower compared to those measured at 25ºC. The wear rates of hard phase containing alloys increase with temperature, because the metal matrices loose their capability of supporting the hard phases bringing about additional abrasion.

Effect of Lanthanum on mechanical and wear properties of high-pressure die-cast Mg-3Al-3Sn-3Sb alloy

2021 ◽  
Vol 63 (1) ◽  
pp. 85-91
Author(s):  
Güven Yarkadaş ◽  
Levent Cenk Kumruoğlu ◽  
Selma Özarslan ◽  
Hüseyin Şevik
Keyword(s):  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Alloying Element ◽  
Wear Properties ◽  
Wear Rates ◽  
Die Cast ◽  
Steel Disc ◽  
La Addition ◽  
Pin On Disk ◽  
Wear Tests

Abstract In the present study, the effect of an La alloying element with different quantities (1, 3 and 5 wt.-%) on the microstructure, mechanical and dry sliding wear properties of Mg- 3Al-3Sn-3Sb alloy was investigated. The wear tests were done on the alloys using pin on-disk equipment against a 4140 steel disc as counterpart under three different sliding velocities of 0.3, 0.6 and 1.2 ms-1 and four different loads of 5, 10, 20 and 40 N. The microstructural results showed that the new intermetallic phases (La5Sn3 and LaSnSb2) were formed with addition of La to the main alloy. Also, it was observed that the hardness of the Mg-3Al-3Sn-3Sb alloy was raised with increasing La addition. Furthermore, the tensile properties of the Mg-3Al-3Sn-3Sb alloy improved with rising La content at room and elevated temperature. The wear rates of the alloys increase with increasing of the sliding speed and load. In addition to this, the wear rate of the Mg-3Al-3Sn-3Sb alloy was found to be higher than that of the La content alloys for all test conditions.

An experimental and theoretical study of the abrasion performance of digital light processing parts

2020 ◽  
pp. 095440542098133
Author(s):  
Mehdi Kazemi ◽  
Abdolreza Rahimi
Keyword(s):  
Layer Thickness ◽  
Normal Load ◽  
Digital Light Processing ◽  
One Step ◽  
Pin On Disk ◽  
The Relationship ◽  
Influential Parameters ◽  
Disk Method ◽  
Normal Angle

Generally, interactions at surface asperities are the cause of wear. Two-Thirds of wear in industry occurs because of the abrasive or adhesive mechanisms. This research presents an analytical model for abrasion of additive manufactured Digital Light Processing products using pin-on-disk method. Particularly, the relationship between abrasion volume, normal load, and surface asperities’ angle is investigated. To verify the proposed mathematical model, the results of this model are verified with the practical experiments. Results show that the most influential parameters on abrasion rate are normal load and surface’s normal angle. Abrasion value increases linearly with increasing normal load. The maximum abrasion value occurs when the surface’s normal angle during fabrication is 45°. After the asperities are worn the abrasion volume is the same for all specimens with different surface’s normal angle. Though layer thickness does not directly affect the wear rate, but surface roughness tests show that layer thickness has a great impact on the quality of the abraded surface. When the thickness of the layers is high, the abraded surface has deeper valleys, and thus has a more negative skewness. This paper presents an original approach in abrasion behavior improvement of DLP parts which no research has been done on it so far; thus, bringing the AM one step closer to maturity.

Surface Laser Plasma in Laser Treatment of Materials in High Pressure Gases

1991 ◽  
Vol 236 ◽  
Author(s):  
A. Smirnov ◽  
C. Dupuy ◽  
G. Flamant
Keyword(s):  
High Pressure ◽  
Laser Treatment ◽  
Laser Plasma ◽  
Holographic Interferometry ◽  
Aerosol Particles ◽  
Optical Breakdown ◽  
Plasma Generation ◽  
Additional Information ◽  
Surface Laser ◽  
Condensation Front

AbstractUsing holographic interferometry the surface laser plasma generation in high pressure gases has been investigated. Additional information about the generation of surface cover laser plasma, optical breakdown in the presence of aerosol particles and condensation front forming in high pressure gases is given.

Sliding Wear Behavior of Remelted Al2O3-TiO2 Plasma Sprayed Coatings on Titanium

2016 ◽  
Vol 254 ◽  
pp. 231-236 ◽  
Author(s):  
Ion Dragoş Uţu ◽  
Gabriela Marginean ◽  
Iosif Hulka ◽  
Viorel Aurel Şerban
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Pure Titanium ◽  
Titanium Substrate ◽  
Atmospheric Plasma ◽  
Wear Properties ◽  
Before And After ◽  
Sprayed Coating ◽  
Pin On Disk ◽  
Sprayed Coatings

Microstructure and wear properties of the Al2O3-13.wt% TiO2 thermally sprayed coatings before and after remelting were investigated in this study. The coatings were deposited on a pure titanium substrate using the atmospheric plasma spraying (APS) process. The as-sprayed coatings were electron beam (EB) modified in order to improve their compactness and bonding strength.The effect of EB remelting on the microstructure, phase constituents and wear properties was investigated using scanning electron microscopy (SEM), X-Ray diffraction technique and hardness measurements. The sliding wear behavior was tested using a pin on disk method.The results showed that the remelting process had a positive effect removing the lamellar defect of the as-sprayed coating and improving the compactness, hardness and wear behavior.

On data dispersion in pin-on-disk wear tests

Wear ◽  
2002 ◽  
Vol 252 (11-12) ◽  
pp. 1001-1006 ◽  
Author(s):  
S Guicciardi ◽  
C Melandri ◽  
F Lucchini ◽  
G de Portu
Keyword(s):  
Pin On Disk ◽  
Wear Tests
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