Corrosion behaviour of WE43 magnesium alloy printed using selective laser melting in simulation body fluid solution

2021 ◽  
Vol 69 ◽  
pp. 556-566
Author(s):  
Jan Suchý ◽  
Lenka Klakurková ◽  
Ondřej Man ◽  
Michaela Remešová ◽  
Miroslava Horynová ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Selective Laser Melting ◽  
Body Fluid ◽  
Corrosion Behaviour ◽  
Fluid Solution ◽  
Laser Melting ◽  
Simulation Body Fluid ◽  
We43 Magnesium Alloy

scholarly journals Thermo-Fluid-Dynamic Modeling of the Melt Pool during Selective Laser Melting for AZ91D Magnesium Alloy

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4157
Author(s):  
Hongyao Shen ◽  
Jinwen Yan ◽  
Xiaomiao Niu
Keyword(s):  
Temperature Distribution ◽  
Magnesium Alloy ◽  
Selective Laser Melting ◽  
Laser Power ◽  
Large Temperature ◽  
Fe Model ◽  
Laser Melting ◽  
Az91d Magnesium Alloy ◽  
Melt Pool ◽  
Flow Activity

A three dimensional finite element model (FEM) was established to simulate the temperature distribution, flow activity, and deformation of the melt pool of selective laser melting (SLM) AZ91D magnesium alloy powder. The latent heat in phase transition, Marangoni effect, and the movement of laser beam power with a Gaussian energy distribution were taken into account. The influence of the applied linear laser power on temperature distribution, flow field, and the melt-pool dimensions and shape, as well as resultant densification activity, was investigated and is discussed in this paper. Large temperature gradients and high cooling rates were observed during the process. A violent flow occurred in the melt pool, and the divergent flow makes the melt pool wider and longer but shallower. With the increase of laser power, the melt pool’s size increases, but the shape becomes longer and narrower. The width of the melt pool in single-scan experiment is acquired, which is in good agreement with the results predicted by the simulation (with error of 1.49%). This FE model provides an intuitive understanding of the complex physical phenomena that occur during SLM process of AZ91D magnesium alloy. It can help to select the optimal parameters to improve the quality of final parts and reduce the cost of experimental research.

scholarly journals Development of new approaches to the study of pitting corrosion resistance of stainless steels obtained by selective laser melting

2019 ◽  
Vol 121 ◽  
pp. 01011
Author(s):  
Olga Parmenova ◽  
Svetlana Mushnikova ◽  
Vitaliy Bobyr ◽  
Evgeniy Samodelkin
Keyword(s):  
Corrosion Resistance ◽  
Selective Laser Melting ◽  
Pitting Corrosion ◽  
Stainless Steels ◽  
Laser Scanning ◽  
Corrosion Behaviour ◽  
Steel Corrosion ◽  
Scanning Speed ◽  
Laser Melting ◽  
Initial State

This paper presents the results of comparative corrosion resistance studies of stainless steels manufactured by selective laser melting (SLM) in the initial state with subsequent heat treatment and machining. Pitting corrosion tests are carried out, according to ASTM G48 method A in 10% FeCl3·6H2O solution at elevated temperature and exposure time for 5h. The studies were performed on the AISI 321 and AISI 316L stainless steels manufactured by SLM. It was obtained that laser scanning speed decrease led to density rise by other SLM parameters being equal. Porosity affected to the stainless steel corrosion behaviour significant. Metal density decrease resulted to corrosion rate rise. Microstructure examination showed that pitting corrosion development depended on surface steel condition.

Investigation of the Surface Modification on Biomedical Magnesium Alloy

2015 ◽  
Vol 1095 ◽  
pp. 295-298 ◽  
Author(s):  
You Dong Xu ◽  
Jian Qing Xiong ◽  
Shi Guang Xu ◽  
Jun Jun Zhang
Keyword(s):  
Magnesium Alloy ◽  
Body Fluid ◽  
Energy Dispersive Spectrometry ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Conversion Coating ◽  
Alloy Surface ◽  
Material Surface ◽  
Original Material ◽  
Cell Toxicity

In this work, the green chemistry conversion coating on AZ31 magnesium alloy surface was made and studied by means of Ce (SO4)2·2(NH4)2SO4·4H2O and MnSO4 as inhibitor, H2O2 as oxidant, NaCl as accelerator, CH3COOH as stabilizer. The coating was evaluated in simulated body fluid (SBF) with pH=7.4 at 37°C by using electrochemical impedance spectroscopy (EIS). The results show the conversion coating resistance, for the untreated or treated alloy, is 0.75 kΩ·cm2 and 3.28 kΩ·cm2 respectively. It indicates the conversion coating treated surface presents better corrosion behaviour in SBF than the original material surface. The morphologies and composition the coating were examined by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) respectively. The result indicates that the Ce-Mn conversion coating was made on magnesium alloy surface. Biocompatibility of conversion coating was investigated by use of cell toxicity. Cell culture has shown that the magnesium alloy has good cytocompatibility.

Surface characteristics and corrosion behaviour of WE43 magnesium alloy coated by SiC film

2012 ◽  
Vol 258 (7) ◽  
pp. 3074-3081 ◽  
Author(s):  
M. Li ◽  
Y. Cheng ◽  
Y.F. Zheng ◽  
X. Zhang ◽  
T.F. Xi ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behaviour ◽  
Surface Characteristics ◽  
Sic Film ◽  
We43 Magnesium Alloy

Corrosion behaviour of 316L stainless steel manufactured by selective laser melting

2019 ◽  
Vol 70 (9) ◽  
pp. 1633-1645 ◽  
Author(s):  
Francesco Andreatta ◽  
Alex Lanzutti ◽  
Emanuele Vaglio ◽  
Giovanni Totis ◽  
Marco Sortino ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Selective Laser Melting ◽  
316L Stainless Steel ◽  
Corrosion Behaviour ◽  
Laser Melting

A detailed microstructural and corrosion analysis of magnesium alloy WE43 manufactured by selective laser melting

2020 ◽  
Vol 35 ◽  
pp. 101321
Author(s):  
M. Esmaily ◽  
Z. Zeng ◽  
A.N. Mortazavi ◽  
A. Gullino ◽  
S. Choudhary ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Selective Laser Melting ◽  
Laser Melting ◽  
Alloy We43

Microstructure and corrosion behaviour of laser surface melting treated WE43 magnesium alloy

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30642-30651 ◽  
Author(s):  
Cancan Liu ◽  
Qingbiao Li ◽  
Jun Liang ◽  
Jiansong Zhou ◽  
Lingqian Wang
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Continuous Wave ◽  
Corrosion Behaviour ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
We43 Magnesium Alloy

An attempt has been made to improve the corrosion behavior of WE43 magnesium alloy by laser surface melting (LSM) using a 10 kW continuous-wave CO2 laser.

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