New approach to amorphization of alloys with low glass forming ability via selective laser melting

Łukasz Żrodowski , Bartłomiej Wysocki , Rafał Wróblewski , Agnieszka Krawczyńska , Bogusława Adamczyk-Cieślak , Joanna Zdunek , Piotr Błyskun , Jarosław Ferenc , Marcin Leonowicz , Wojciech Święszkowski

Abstract

he paper presents a new approach to selective laser melting (SLM) of alloys with low glass-forming ability and the basics of microstructure evolution during SLM of iron-based metallic glasses. After extensive parameters optimization, a novel scanning strategy, involving two-step melting, comprising preliminary laser melting, followed by short-pulse amorphization, has been introduced to maximize the glassy phase fraction and ensure good magnetic properties. Single melted samples show poor amorphization with well separated amorphous regions and coercivity of 1032 A/m. Second melting increased the glassy phase content by over an order of magnitude - up to 89.6% and reduced coercive force over four-times to 238 A/m. X-ray diffractions show significant difference between, arising from melt, disordered Fe(Si) phase and devitrified, ordered Fe 3 Si. Coexistence of those phases has been shown in heat affected zone by electron diffraction. Beneficial effect of the novel remelting strategy has been explained on the basis of restricted crystallization in heat-affected zone and reduction of sample overheating, by application of the Point-Random strategy.
Author Łukasz Żrodowski (FMSE / DCFM)
Łukasz Żrodowski,,
- Division of Construction and Functional Materials
, Bartłomiej Wysocki (FMSE / DMD)
Bartłomiej Wysocki,,
- Division of Materials Design
, Rafał Wróblewski (FMSE / DCFM)
Rafał Wróblewski,,
- Division of Construction and Functional Materials
, Agnieszka Krawczyńska (FMSE / DMD)
Agnieszka Krawczyńska,,
- Division of Materials Design
, Bogusława Adamczyk-Cieślak (FMSE / DMD)
Bogusława Adamczyk-Cieślak,,
- Division of Materials Design
, Joanna Zdunek (FMSE / DMD)
Joanna Zdunek,,
- Division of Materials Design
, Piotr Błyskun (FMSE / DCFM)
Piotr Błyskun,,
- Division of Construction and Functional Materials
, Jarosław Ferenc (FMSE / DCFM)
Jarosław Ferenc,,
- Division of Construction and Functional Materials
, Marcin Leonowicz (FMSE / DCFM)
Marcin Leonowicz,,
- Division of Construction and Functional Materials
, Wojciech Święszkowski (FMSE / DMD)
Wojciech Święszkowski,,
- Division of Materials Design
Journal seriesJournal of Alloys and Compounds, ISSN 0925-8388, (A 35 pkt)
Issue year2019
Vol771
Pages769-776
Publication size in sheets0.5
Keywords in EnglishMetallic glasses; Additive manufacturing; Selective laser melting; Soft magnetic materials
ASJC Classification2505 Materials Chemistry; 2506 Metals and Alloys; 2210 Mechanical Engineering; 2211 Mechanics of Materials
DOIDOI:10.1016/j.jallcom.2018.08.075
Languageen angielski
File
Jalcom_novelstrategy.pdf 3.33 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 25-04-2019, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 11-03-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.321; WoS Impact Factor: 2017 = 3.779 (2) - 2017=3.315 (5)
Citation count*2 (2019-08-13)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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