Enhancement of mechanical properties of Copper Brazed by laser surface modification

Sulaiman, A; Aiman, M. H.; Quazi, M. M.; Ishak, M.; Ariga, Tadashi

doi:10.1088/1757-899x/788/1/012012

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…It can be supported by the finding from A Sulaiman, who reported that when a higher laser power usage is applied to modify the metal's surface, bigger and deeper microgrooves will be produced hence, increasing the surface roughness [14]. Besides, the increment in laser power was attributed to the increase in energy radiated will also affect the melt pool homogeneity and size, inducing larger melt tracks, hence producing rough surface [15].…”

Section: Effect Of Laser Power On Surface Roughnessmentioning

confidence: 69%

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

Zaifuddin

Zulhilmi

Aiman

et al. 2021

JMES

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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.

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Section: Effect Of Laser Power On Surface Roughnessmentioning

confidence: 69%

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

Zaifuddin

Zulhilmi

Aiman

et al. 2021

JMES

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“…For future works, the level of the hatching distance could be optimised, and additional parameters can be analysed. Laser surface modification of engineering alloys are now finding great applications in hardening [19] and brazing technology [20], and it would be wise to see their effect on other applications as well.…”

Section: Discussionmentioning

confidence: 99%

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

Arsyad¹,

Linggam²,

Quazi³

et al. 2021

IJAME

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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.

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“…As nanosecond laser technology is versatile and simple to shape, many parameters must, of course, need to be optimised to achieve the best machining performance. Laser power [5], pulse duration [6], frequency [7], scan speed, hatching parameters and scan loop [8] are among the laser parameters that are often studied.…”

Section: Introductionmentioning

confidence: 99%

Influence of laser power in nanosecond laser texturing for a hydrophobic state on SS316L

Zul

Ishak@Muhammad

Aiman

et al. 2021

JMES

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The use of lasers in surface engineering has recently made significant progress. The hydrophobic surface is commonly studied because of the application in various fields, including vehicles, aerospace, biomedicine, etc. Since these laser methods require many combination parameters, such as laser power (P), frequency (ƒ), scan speed (ʋ) and laser beam diameter (D), the effect of the parameters must therefore be investigated to produce the hydrophobic condition. This research tries to relate the laser power with the morphological properties and contact angle of the SS316L surfaces. Samples are subjected to laser texturing with different laser power settings. The surface is then characterised by surface roughness, and the contact angle is measured according to a specific time interval. The laser power output and energy density function on the surface and contact angle were investigated in these contexts experimentally. Surface roughness was defined and validated to show that the laser parameters' effect is effective and controllable. This study shows that the laser output intensity significantly contributes to regulating surface roughness and the substrate's wetting activity. The 18W and 24W laser outputs produce a spiked surface with various peaks that cause the surface to become hydrophobic over time because of the air-trap that happens in the valley.

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Enhancement of mechanical properties of Copper Brazed by laser surface modification

Cited by 8 publications

References 8 publications

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

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

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

Influence of laser power in nanosecond laser texturing for a hydrophobic state on SS316L

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