New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering
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Materials Science and Engineering Department, Universidad Carlos III de Madrid, 28911 Leganés, Spain
2
IMDEA Materials Institute, Universidad Carlos III de Madrid, 28903 Getafe, Spain
3
Institute of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, Austria
4
AMES PM Tech Center, 08620 Sant Vicenç dels Horts, Barcelona, Spain
*
Authors to whom correspondence should be addressed.
Metals 2021, 11(1), 176; https://doi.org/10.3390/met11010176
Received: 13 December 2020
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Revised: 5 January 2021
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Accepted: 14 January 2021
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Published: 19 January 2021
(This article belongs to the Section Powder Metallurgy)
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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Keywords:
liquid phase sintering; master alloys; wettability; surface energy; sintered low alloyed steels
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MDPI and ACS Style
Campos, M.; Torralba, J.M.; Oro, R.d.; Bernardo, E.; Galán-Salazar, A. New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering. Metals 2021, 11, 176. https://doi.org/10.3390/met11010176
AMA Style
Campos M, Torralba JM, Oro Rd, Bernardo E, Galán-Salazar A. New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering. Metals. 2021; 11(1):176. https://doi.org/10.3390/met11010176
Chicago/Turabian StyleCampos, Mónica, José M. Torralba, Raquel d. Oro, Elena Bernardo, and Andrea Galán-Salazar. 2021. "New Opportunities for Low Alloy Steels—Master Alloys for Liquid Phase Sintering" Metals 11, no. 1: 176. https://doi.org/10.3390/met11010176
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