Effect and action mechanism of ultrasonic assistance on microstructure and mechanical performance of laser cladding 316L stainless steel coating

Laser Cladding is one of the leading processes within Additive Manufacturing technologies, which has concentrated a considerable amount of effort on its development. In regard to the latter, the current study aims to summarize the influence of the most relevant process parameters in the laser cladding processing of single and compound volumes (solid forms) made from AISI 316L stainless steel powders and using a coaxial nozzle for their deposition. Process speed, applied laser power and powder flow are considered to be the main variables affecting the laser cladding in single clads, whereas overlap percentage and overlapping strategy also become relevant when dealing with multiple clads. By setting appropriate values for each process parameter, the main goal of this paper is to develop a processing window in which a good metallurgical bond between the delivered powder and the substrate is obtained, trying simultaneously to maintain processing times at their lowest value possible. Conventional metallography techniques were performed on the cross sections of the laser tracks to measure the effective dimensions of clads, height and width, as well as the resulting dilution value. Besides the influence of the overlap between contiguous clads and layers, physical defects such as porosity and cracks were also evaluated. Optimum process parameters to maximize productivity were defined as 13 mm/s, 2500 W, 30% of overlap and a 25 g/min powder feed rate.

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Synthesis and Characterization of Al–SiC Composite Coatings on 316L Stainless Steel Fabricated via Laser Cladding Technique

Metallography Microstructure and Analysis ◽

10.1007/s13632-021-00778-y ◽

2021 ◽

Author(s):

L. R. Kanyane ◽

T. J. Malepe ◽

N. Malatji ◽

A. P. I. Popoola

Keyword(s):

Stainless Steel ◽

Laser Cladding ◽

316L Stainless Steel ◽

Composite Coatings ◽

Synthesis And Characterization

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Structure Optimization on FEM Biomechanical Model of Bioabsorable Pure Magnesium Skin Staple

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1049-1050.511 ◽

2014 ◽

Vol 1049-1050 ◽

pp. 511-514

Author(s):

Yong Hua Lao ◽

Yue Shan Huang ◽

Wei Rong Li ◽

Ying Jun Wang

Keyword(s):

Stainless Steel ◽

Mechanical Strength ◽

316L Stainless Steel ◽

Mechanical Performance ◽

Structure Optimization ◽

Biomechanical Model ◽

Pure Magnesium ◽

Structural Deformation ◽

Medical Implants ◽

Surgical Suture

Skin Stapler is an alternative instrument, which makes surgy easily and quickly and owns fine-looking effect without scars after the wound healed, to traditional surgical suture for the wound skin sewing. Magnesium recently is considered to develop medical implants because of its beneficial biocompatibility and bioabsorability. Due its less mechanical strength than traditional 316L stainless steel used in common staple, this paper try to optimize the structure of pure magnesium skin staple by FEM models and simulation as so to assure its biomechanical safty. Using ADINA software, two staples with different pre-bended shoulders and the traditional staple without shoulder are modeling to analyze its stress and plastical strain during structural deformation under load. The results, not only of pure magnesium models but also of 316L stainless steel models, showed that the shoulders optimization on staple structure has important role in its mechanical performance. The research increases the possibility of bioabsorable magnesium material application on medical skin staple.

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Dispersion Behaviors of Y2O3Particles Into Aisi 316L Stainless Steel by Using Laser Cladding Technology

Journal of Korean Powder Metallurgy Institute ◽

10.4150/kpmi.2013.20.4.269 ◽

2013 ◽

Vol 20 (4) ◽

pp. 269-274 ◽

Cited By ~ 3

Author(s):

Eun-Kwang Park ◽

Sung-Mo Hong ◽

Jin-Ju Park ◽

Min-Ku Lee ◽

Chang-Kyu Rhee ◽

...

Keyword(s):

Stainless Steel ◽

Laser Cladding ◽

316L Stainless Steel ◽

Aisi 316L ◽

Aisi 316L Stainless Steel

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Simulation and Analysis of the Temperature Field in Laser Cladding 316L Stainless Steel

Chinese Journal of Lasers ◽

10.3788/cjl201542.s103002 ◽

2015 ◽

Vol 42 (s1) ◽

pp. s103002

Author(s):

刘娟 Liu Juan ◽

罗开玉 Luo Kaiyu ◽

景祥 Jing Xiang ◽

鲁金忠 Lu Jinzhong

Keyword(s):

Stainless Steel ◽

Temperature Field ◽

Laser Cladding ◽

316L Stainless Steel

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Effect of Rare Earth Oxides on Microstructure and Corrosion Behavior of Laser-Cladding Coating on 316L Stainless Steel

Coatings ◽

10.3390/coatings9100636 ◽

2019 ◽

Vol 9 (10) ◽

pp. 636 ◽

Cited By ~ 3

Author(s):

Xu ◽

Wang ◽

Chen ◽

Qiao ◽

Zhang ◽

...

Keyword(s):

Stainless Steel ◽

Rare Earth ◽

Corrosion Behavior ◽

Laser Cladding ◽

316L Stainless Steel ◽

Electrochemical Impedance ◽

Salt Spray ◽

Rare Earth Oxides ◽

X Ray Diffraction ◽

X Ray

The effect of rare earth oxides on the microstructure and corrosion behavior of laser-cladding coating on 316L stainless steel was investigated using hardness measurements, a polarization curve, electrochemical impedance spectroscopy (EIS), a salt spray test, X-ray diffraction, optical microscopy, and scanning electron microscopy (SEM). The results showed that the modification of rare earth oxides on the laser-cladding layer caused minor changes to its composition but refined the grains, leading to an increase in hardness. Electrochemical and salt spray studies indicated that the corrosion resistance of the 316L stainless steel could be improved by laser cladding, especially when rare earth oxides (i.e., CeO2 and La2O3) were added as a modifier.

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