3D Thermal Finite Element Analysis of the SLM 316L Parts with Microstructural Correlations
Joint Authors
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
In this study, a multitrack and multilayer finite element model was developed to simulate the temperature field and molten pool contours during selective laser melting (SLM) of 316L stainless steel powder under different scanning strategies.
The simulated temperature field and its evolution over time were compared with experimental measurement results.
Furthermore, a correlation was established by the presented results between the predicted thermal behavior and the microstructure of SLM specimens.
It was found that the maximum temperature of the molten pool rose slightly with the increase of scanning tracks, but when laser scanned multilayer, the maximum temperature rose first and then decreased.
There are large columnar crystals in molten pools, growing in the direction of the maximum temperature gradient.
The microstructure defects are more likely to occur at the bonding regions between adjacent layers and islands, where the heat and stress are concentrated.
Moreover, the results also showed that the scanning strategy affects the microstructure and microhardness.
Also, the SLM 316L parts under the S-shaped strategy had finer grains and a higher Vicker hardness than that formed under the island strategy.
American Psychological Association (APA)
He, Ketai& Zhao, Xue. 2018. 3D Thermal Finite Element Analysis of the SLM 316L Parts with Microstructural Correlations. Complexity،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1135529
Modern Language Association (MLA)
He, Ketai& Zhao, Xue. 3D Thermal Finite Element Analysis of the SLM 316L Parts with Microstructural Correlations. Complexity No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1135529
American Medical Association (AMA)
He, Ketai& Zhao, Xue. 3D Thermal Finite Element Analysis of the SLM 316L Parts with Microstructural Correlations. Complexity. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1135529
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1135529