New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering

The Master-alloy (MA) alloy route to promote a liquid phase during sintering has great potential to reduce costs in low alloyed sintered steels, meanwhile enabling the introduction of innovative alloy systems with Cr, Mn and Si. However, in order to successfully modify the performance of steels, mul...

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Main Authors: Mónica Campos, José M. Torralba, Raquel de Oro, Elena Bernardo, Andrea Galán-Salazar
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/11/1/176
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author Mónica Campos
José M. Torralba
Raquel de Oro
Elena Bernardo
Andrea Galán-Salazar
author_facet Mónica Campos
José M. Torralba
Raquel de Oro
Elena Bernardo
Andrea Galán-Salazar
author_sort Mónica Campos
collection DOAJ
description The Master-alloy (MA) alloy route to promote a liquid phase during sintering has great potential to reduce costs in low alloyed sintered steels, meanwhile enabling the introduction of innovative alloy systems with Cr, Mn and Si. However, in order to successfully modify the performance of steels, multi requirements must be met, including, for example, solubility with the base material, compatibility with the usual sintering atmospheres, homogeneous distribution of the powdered master alloy in the material and the control of secondary porosity. Efforts have been made to properly design the composition of MA, to identify the reducing agents and to understand how they affect the wetting and liquid spreading all over the sintered part. This work reviews these key aspects for the efficient development of steels and explores the possibility to achieve a composition that can act as liquid former or as sinter braze adapting its use to the component requirement.
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spelling doaj.art-802ae0fbb3854495b3373d1eb845b09f2023-12-03T13:53:28ZengMDPI AGMetals2075-47012021-01-0111117610.3390/met11010176New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase SinteringMónica Campos0José M. Torralba1Raquel de Oro2Elena Bernardo3Andrea Galán-Salazar4Materials Science and Engineering Department, Universidad Carlos III de Madrid, 28911 Leganés, SpainIMDEA Materials Institute, Universidad Carlos III de Madrid, 28903 Getafe, SpainInstitute of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, AustriaAMES PM Tech Center, 08620 Sant Vicenç dels Horts, Barcelona, SpainMaterials Science and Engineering Department, Universidad Carlos III de Madrid, 28911 Leganés, SpainThe Master-alloy (MA) alloy route to promote a liquid phase during sintering has great potential to reduce costs in low alloyed sintered steels, meanwhile enabling the introduction of innovative alloy systems with Cr, Mn and Si. However, in order to successfully modify the performance of steels, multi requirements must be met, including, for example, solubility with the base material, compatibility with the usual sintering atmospheres, homogeneous distribution of the powdered master alloy in the material and the control of secondary porosity. Efforts have been made to properly design the composition of MA, to identify the reducing agents and to understand how they affect the wetting and liquid spreading all over the sintered part. This work reviews these key aspects for the efficient development of steels and explores the possibility to achieve a composition that can act as liquid former or as sinter braze adapting its use to the component requirement.https://www.mdpi.com/2075-4701/11/1/176liquid phase sinteringmaster alloyswettabilitysurface energysintered low alloyed steels
spellingShingle Mónica Campos
José M. Torralba
Raquel de Oro
Elena Bernardo
Andrea Galán-Salazar
New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
Metals
liquid phase sintering
master alloys
wettability
surface energy
sintered low alloyed steels
title New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
title_full New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
title_fullStr New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
title_full_unstemmed New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
title_short New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
title_sort new opportunities for low alloy steels master alloys for liquid phase sintering
topic liquid phase sintering
master alloys
wettability
surface energy
sintered low alloyed steels
url https://www.mdpi.com/2075-4701/11/1/176
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