scholarly journals Enhancement of laser heating process by laser surface modification on Titanium alloy

2021 ◽  
Vol 15 (3) ◽  
pp. 8310-8318
Author(s):  
A. Q. Zaifuddin ◽  
F. Zulhilmi ◽  
M.H. Aiman ◽  
M.M. Quazi ◽  
M. Ishak
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Surface Modification ◽  
Energy Absorption ◽  
Laser Heating ◽  
Laser Power ◽  
Surface Profile ◽  
Laser Surface ◽  
Maximum Temperature ◽  
Laser Surface Modification

Titanium alloys are widely utilized in laser heating applications. However, it has poor optical properties due to low laser energy absorption. Nevertheless, a higher energy absorption can be realized by modifying the surface profile through increasing the surface roughness. In this present work, the laser surface modification (LSM) process was carried out to increase the roughness on surface of Ti6Al4V titanium alloy. Subsequently, the surface characterization and surface roughness were analysed by using the 3D optical microscope. The effect of laser power on the increment of surface roughness was investigated. It was revealed that an increase in laser power during LSM process could increase the surface roughness. The result shows that, the surface roughness of titanium alloy increased 27 times when modified with the highest laser power (27W) compared to the gritted surface. Furthermore, the modified surface by LSM will be heated using laser radiation in order to analyse the effect of surface roughness towards laser heating temperature. Depending on the value of the power during laser heating, the maximum temperature measured could be increased 27% corresponding to a gritted flat reference surface.

scholarly journals Investigation of the effect of laser surface modification on the hardness and wear resistance of a titanium alloy

2021 ◽  
Vol 2131 (5) ◽  
pp. 052083
Author(s):  
L V Belyaev ◽  
A V Zhdanov
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Surface Modification ◽  
Coefficient Of Friction ◽  
Laser Surface ◽  
Laser Modification ◽  
Laser Surface Modification ◽  
Before And After ◽  
Coefficient Of Elasticity ◽  
Modification Of The Surface

Abstract The effect of laser modification of the surface on the value of the coefficient of elasticity, hardness, coefficient of friction and the amount of wear of the counter body when testing products made of a deformable titanium alloy was investigated. It was found that the indicators of hardness and wear resistance of a titanium alloy depend on the modes of laser modification. These dependencies are extreme in nature, they have maxima and minima. The quantitative values of hardness and wear resistance indicators for the specified material before and after laser treatment of its surface in various modes are given.

Laser Surface Modification of Duplex Stainless Steel 2205 to Modify the Surface Roughness

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
Y. Arsyad ◽  
R. Linggam ◽  
MOINUDDIN MOHAMMED QUAZI ◽  
M.H. Aiman ◽  
M. Ishak ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Modification ◽  
Duplex Stainless Steel ◽  
Surface Topography ◽  
Laser Surface ◽  
Polished Surface ◽  
Average Roughness ◽  
Laser Surface Modification ◽  
2205 Duplex Stainless Steel

Laser surface modification is an emerging process that can produce texture on a work surface and effectively enhance surface topography while altering surface roughness. Laser surface modification is a sensitive process that depends on various laser processing parameters such as power, scanning speed, hatching distance. The significance of this work is to examine the influence of hatching distance on the surface characteristic of 2205 duplex stainless steel samples. The surface transformation and variation of the surface roughness properties of the materials were examined. The hatching distance was varied from 0.1 to 0.005 mm. Results indicate that, as the hatch spacing decreases, the overlap of laser track increases, thereby resulting in a decrease of surface roughness. Meanwhile, with the increase of hatch distance, the clear overlay tracks were transformed to irregular wavy surface. The best hatch distance parameter obtained was 100 μm that resulted in the highest roughness of 8.45 μm. Experimental results illustrate that, when the optimum hatch distance of 100 μm was adopted, the polished smooth surface of 2205 duplex stainless steel with initial average roughness value of 0.19 μm increased by 42 times of the polished surface roughness. A strong correlation between hatching distance and roughness was established in 2205 duplex stainless steel. High depth of the altered surface topography and increased roughness were linked to higher levels of hatching distance.

scholarly journals Erratum: Elshazli et al. Laser Surface Modification of TC21 (α/β) Titanium Alloy Using a Direct Energy Deposition (DED) Process. Micromachines 2021, 12, 739

Micromachines ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1078
Author(s):  
Ahmed Magdi Elshazli ◽  
Ramadan N. Elshaer ◽  
Abdel Hamid Ahmed Hussein ◽  
Samar Reda Al-Sayed
Keyword(s):  
Titanium Alloy ◽  
Surface Modification ◽  
Energy Deposition ◽  
Laser Surface ◽  
Direct Energy Deposition ◽  
Laser Surface Modification ◽  
Direct Energy

In the original article [...]

Tool steel laser surface modification with TiC

2008 ◽  
Author(s):  
M. A. Montealegre ◽  
G. Castro ◽  
J. L. Arias ◽  
A. Fernández-Vicente ◽  
J. Vázquez
Keyword(s):  
Surface Modification ◽  
Tool Steel ◽  
Laser Surface ◽  
Laser Surface Modification
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