Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn

Abstract An experimental method for alloy development that allows to systematically scan multicomponent alloy systems is presented using the Cu–Ga–Sn system as an example. Rods with homogeneous concentration distribution of different initial compositions are annealed in a steep temperature gradient...

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Autores principales:	Martin Salge, Gunther Wiehl, Klaus Hack, Markus Rettenmayr
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/37ee147430a943d3ae773051f2a4fc79
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spelling	oai:doaj.org-article:37ee147430a943d3ae773051f2a4fc792021-12-02T16:18:04ZResolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn10.1038/s41598-020-78772-72045-2322https://doaj.org/article/37ee147430a943d3ae773051f2a4fc792020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78772-7https://doaj.org/toc/2045-2322Abstract An experimental method for alloy development that allows to systematically scan multicomponent alloy systems is presented using the Cu–Ga–Sn system as an example. Rods with homogeneous concentration distribution of different initial compositions are annealed in a steep temperature gradient with temperatures in the range from above liquidus to below solidus temperature. During resolidification of the initially formed mushy-zone, a continuously varying composition over the length of the rods develops. Further concentration gradients of the alloying elements are generated during subsequent directional solidification. The graded samples are evaluated for different properties. Vickers hardness as a function of composition was measured along the length of the samples to get first information on the mechanical behavior of bulk samples. The melting range of selected compositions (cylindrical disks of 1 mm thickness cut out of the rods) was determined by differential scanning calorimetry and compared to liquidus temperatures extrapolated from the binary systems with a fitting method and the Calphad method. With the procedure introduced here, it is possible to determine several alloy properties over an extended composition range of a multicomponent system with significantly reduced experimental effort.Martin SalgeGunther WiehlKlaus HackMarkus RettenmayrNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Martin Salge Gunther Wiehl Klaus Hack Markus Rettenmayr Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
description	Abstract An experimental method for alloy development that allows to systematically scan multicomponent alloy systems is presented using the Cu–Ga–Sn system as an example. Rods with homogeneous concentration distribution of different initial compositions are annealed in a steep temperature gradient with temperatures in the range from above liquidus to below solidus temperature. During resolidification of the initially formed mushy-zone, a continuously varying composition over the length of the rods develops. Further concentration gradients of the alloying elements are generated during subsequent directional solidification. The graded samples are evaluated for different properties. Vickers hardness as a function of composition was measured along the length of the samples to get first information on the mechanical behavior of bulk samples. The melting range of selected compositions (cylindrical disks of 1 mm thickness cut out of the rods) was determined by differential scanning calorimetry and compared to liquidus temperatures extrapolated from the binary systems with a fitting method and the Calphad method. With the procedure introduced here, it is possible to determine several alloy properties over an extended composition range of a multicomponent system with significantly reduced experimental effort.
format	article
author	Martin Salge Gunther Wiehl Klaus Hack Markus Rettenmayr
author_facet	Martin Salge Gunther Wiehl Klaus Hack Markus Rettenmayr
author_sort	Martin Salge
title	Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
title_short	Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
title_full	Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
title_fullStr	Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
title_full_unstemmed	Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
title_sort	resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of cu–ga–sn
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/37ee147430a943d3ae773051f2a4fc79
work_keys_str_mv	AT martinsalge resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn AT guntherwiehl resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn AT klaushack resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn AT markusrettenmayr resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn
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Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn

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