Modeling of Grain Structure and Heat-Affected Zone in Laser Surface Melting Process

2013 ◽  
Vol 44 (4) ◽  
pp. 1041-1048 ◽  
Author(s):  
Mohammad Amin Jabbareh ◽  
Hamid Assadi
Keyword(s):  
Heat Affected Zone ◽  
Melting Process ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Grain Structure

Casting and Laser Surface Melting of 316L Stainless Steel from Scrap Resources

2020 ◽  
Vol 835 ◽  
pp. 306-316
Author(s):  
Haitham Elgazzar ◽  
Shimaa El-Hadad ◽  
Hassan Abdel-Sabour
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Melting Process ◽  
Industrial Applications ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Steel Scrap ◽  
Induction Melting ◽  
Nano Size

316L stainless steel is used in various industrial applications including chemical, biomedical and mechanical industries due to its good mechanical properties and corrosion resistance. Recycling of 316L stainless steel scrap without significantly reducing its value has received recently great attention because of the environmental regulations. In the current work, 316L stainless steel scrap was recycled via casting using Skull induction melting technique. The casted products subsequently subjected to laser surface melting process to improve its surface properties to be used for harsh environment. The results showed defect free surfaces with homogeneous microstructures. Nano size grains were also obtained due to rapid solidification process. Such nano size grains are preferred for extending the usage of the 316L stainless steel in new applications.Corresponding author: E-Mail: [email protected]

Analysis and Prediction of Workpiece Size Effects in Laser Surface Melting Process

2011 ◽  
Vol 4 (4) ◽  
pp. 1312-1317
Author(s):  
Peng Yi ◽  
Yancong Liu ◽  
Yongjun Shi ◽  
Hao Jang ◽  
Guande Lun
Keyword(s):  
Size Effects ◽  
Melting Process ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting

Development of a laser surface melting process for improvement of the wear resistance of gray cast iron

Wear ◽  
1983 ◽  
Vol 86 (2) ◽  
pp. 315-325 ◽  
Author(s):  
A. Blarasin ◽  
S. Corcoruto ◽  
A. Belmondo ◽  
D. Bacci
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Melting Process ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Gray Cast

scholarly journals Fiber Laser Surface Melting of a NiTi Superelastic Alloy: Influence on Structural and Mechanical Properties

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1268 ◽  
Author(s):  
David Dias ◽  
Osmar Santos ◽  
Wellington Alves ◽  
Milton Lima ◽  
Maria Silva
Keyword(s):  
Mechanical Properties ◽  
Fusion Zone ◽  
Laser Fluence ◽  
Melting Process ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Surface Finishing ◽  
High Laser Fluence ◽  
High Laser

The surface melting of a NiTi superelastic alloy using a high-power laser Yb:Fiber was investigated. The influence of this process on the microstructural and mechanical properties was also examined. The reference material was a 3 mm nitinol strip with a homogeneous austenitic B2 phase. For the laser surface melting process, input fluences were applied from 17.5 to 45 J/mm2. The morphology of the structure and the chemical composition of several regions were determined by optical microscopy, scanning electron microscopy, dispersive energy spectra, and X-ray diffraction techniques. The mechanical properties, such as modulus of elasticity and hardness, were determined using nanoindentation and microindentation techniques. The greatest surface finishing of the fusion zone was observed for the condition 35 J/mm2. Three well-defined regions (fusion zone (FZ), heat-affected zone (HAZ), base metal (BM)) could be observed and dimensions of grain size, width, and depth of the melted pool were directly affected by the laser fluence. The geometry of the molten pool could be controlled by the optimization of the laser parameters. High laser fluence caused preferential volatilization of nickel, dynamic precipitation of intermetallic phases, including Ti2Ni, Ni3Ti, and Ni4Ti3, as well as solubilization of TiC in the matrix, which led to grain refinement. Thus, high laser fluence is a suitable technique to enhance mechanical properties such as hardness and Young’s modulus.

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