Grain Size Effects in Selective Laser Melted Fe-Co-2V

The material science of additive manufacturing (AM) has become a significant topic due to the unique way in which the material and geometry are created simultaneously. Major areas of research within inorganic materials include traditional structural materials, shape memory alloys, amorphous material...

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Main Authors: Wesley Everhart, Joseph Newkirk
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/18/3701
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author Wesley Everhart
Joseph Newkirk
author_facet Wesley Everhart
Joseph Newkirk
author_sort Wesley Everhart
collection DOAJ
description The material science of additive manufacturing (AM) has become a significant topic due to the unique way in which the material and geometry are created simultaneously. Major areas of research within inorganic materials include traditional structural materials, shape memory alloys, amorphous materials, and some new work in intermetallics. The unique thermal profiles created during selective laser melting (SLM) may provide new opportunities for processing intermetallics to improve mechanical and magnetic performance. A parameter set for the production of Fe-Co-2V material with additive manufacturing is developed and efforts are made to compare the traditional wrought alloy to the AM version of the same chemistry. Evaluation includes magnetic properties, composition, and phase as a function of thermal history, as well as mechanical performance. Results show significant similarities in microstructure between AM and wrought materials, as well as mechanical and magnetic performance. Property trends are evaluated as a function of grain size and show effects similar to the Hall−Petch strengthening observed in wrought material, though with some underprediction of the strength. Magnetic properties qualitatively follow the expected trends but demonstrate some deviation from wrought material, which is still unexplained.
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spelling doaj.art-190785c73dd5471b8c8632587a6f63712022-12-21T22:42:25ZengMDPI AGApplied Sciences2076-34172019-09-01918370110.3390/app9183701app9183701Grain Size Effects in Selective Laser Melted Fe-Co-2VWesley Everhart0Joseph Newkirk1Honeywell Federal Manufacturing & Technologies LLC, Kansas City National Security Campus, Kansas City, MO 64147, USAMaterials Science & Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USAThe material science of additive manufacturing (AM) has become a significant topic due to the unique way in which the material and geometry are created simultaneously. Major areas of research within inorganic materials include traditional structural materials, shape memory alloys, amorphous materials, and some new work in intermetallics. The unique thermal profiles created during selective laser melting (SLM) may provide new opportunities for processing intermetallics to improve mechanical and magnetic performance. A parameter set for the production of Fe-Co-2V material with additive manufacturing is developed and efforts are made to compare the traditional wrought alloy to the AM version of the same chemistry. Evaluation includes magnetic properties, composition, and phase as a function of thermal history, as well as mechanical performance. Results show significant similarities in microstructure between AM and wrought materials, as well as mechanical and magnetic performance. Property trends are evaluated as a function of grain size and show effects similar to the Hall−Petch strengthening observed in wrought material, though with some underprediction of the strength. Magnetic properties qualitatively follow the expected trends but demonstrate some deviation from wrought material, which is still unexplained.https://www.mdpi.com/2076-3417/9/18/3701additive manufacturingmagnetic materialsgrain size effects
spellingShingle Wesley Everhart
Joseph Newkirk
Grain Size Effects in Selective Laser Melted Fe-Co-2V
Applied Sciences
additive manufacturing
magnetic materials
grain size effects
title Grain Size Effects in Selective Laser Melted Fe-Co-2V
title_full Grain Size Effects in Selective Laser Melted Fe-Co-2V
title_fullStr Grain Size Effects in Selective Laser Melted Fe-Co-2V
title_full_unstemmed Grain Size Effects in Selective Laser Melted Fe-Co-2V
title_short Grain Size Effects in Selective Laser Melted Fe-Co-2V
title_sort grain size effects in selective laser melted fe co 2v
topic additive manufacturing
magnetic materials
grain size effects
url https://www.mdpi.com/2076-3417/9/18/3701
work_keys_str_mv AT wesleyeverhart grainsizeeffectsinselectivelasermeltedfeco2v
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