Cargando…

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

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 temp...

Descripción completa

Detalles Bibliográficos
Autores principales: Salge, Martin, Wiehl, Gunther, Hack, Klaus, Rettenmayr, Markus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7728745/
https://www.ncbi.nlm.nih.gov/pubmed/33303905
http://dx.doi.org/10.1038/s41598-020-78772-7
_version_ 1783621336158961664
author Salge, Martin
Wiehl, Gunther
Hack, Klaus
Rettenmayr, Markus
author_facet Salge, Martin
Wiehl, Gunther
Hack, Klaus
Rettenmayr, Markus
author_sort Salge, Martin
collection PubMed
description 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 Online
Article
Text
id pubmed-7728745
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-77287452020-12-14 Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn Salge, Martin Wiehl, Gunther Hack, Klaus Rettenmayr, Markus Sci Rep Article 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. Nature Publishing Group UK 2020-12-10 /pmc/articles/PMC7728745/ /pubmed/33303905 http://dx.doi.org/10.1038/s41598-020-78772-7 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Salge, Martin
Wiehl, Gunther
Hack, Klaus
Rettenmayr, Markus
Resolidification of a mushy-zone and directional solidification: a method for efficient alloy development demonstrated using the example of Cu–Ga–Sn
title 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_short 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
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7728745/
https://www.ncbi.nlm.nih.gov/pubmed/33303905
http://dx.doi.org/10.1038/s41598-020-78772-7
work_keys_str_mv AT salgemartin resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn
AT wiehlgunther resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn
AT hackklaus resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn
AT rettenmayrmarkus resolidificationofamushyzoneanddirectionalsolidificationamethodforefficientalloydevelopmentdemonstratedusingtheexampleofcugasn