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Development of a post-processing method for estimating solidification parameters from finite-element modeling of laser remelting in directed energy deposition of Ni-Mn-Ga magnetic shape-memory alloy single crystals

Paplham, Tyler and Toman, Jakub and Chmielus, Markus (2021) Development of a post-processing method for estimating solidification parameters from finite-element modeling of laser remelting in directed energy deposition of Ni-Mn-Ga magnetic shape-memory alloy single crystals. Ingenium: Undergraduate Research at the Swanson School of Engineering, 7. pp. 68-71.

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Abstract

Directed energy deposition is a subset of laser additive manufacturing which has been suggested as a feasible method for producing single crystals of metal alloys such as Ni-Mn-Ga magnetic shape-memory alloys. However, relating the thermal parameters, specifically the solidification front growth velocity V and thermal gradient G to the operational parameters, specifically the nominal laser power and travel velocity, is challenging. Therefore, this work aimed to use finite-element analysis (FEA) to create thermal models which allow for the determination of G and V for operational parameter combinations. Comparison with experimental data allowed for association of the range of G and V with the samples that best displayed single crystal growth. It was found that a high power and medium-low travel velocity is most likely to result in single crystal growth.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Paplham, Tylertwp16@pitt.edutwp16
Toman, Jakubjat141@pitt.edujat1410000-0001-7083-0163
Chmielus, Markuschmielus@pitt.educhmielus0000-0002-8688-6054
Date: 2021
Date Type: Publication
Journal or Publication Title: Ingenium: Undergraduate Research at the Swanson School of Engineering
Volume: 7
Publisher: Swanson School of Engineering
Page Range: pp. 68-71
DOI or Unique Handle: 10.18117/manv-gw28
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
Uncontrolled Keywords: Magnetic Shape Memory Alloys; Metal Laser Deposition; additive manufacturing;
Official URL: https://www.engineering.pitt.edu/Research/Office-O...
Funders: National Science Foundation
Article Type: Research Article
Date Deposited: 14 Jun 2021 16:21
Last Modified: 14 Jun 2021 16:21
URI: http://d-scholarship.pitt.edu/id/eprint/41288

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