Manufacturing Technology 2024, 24(1):83-86 | DOI: 10.21062/mft.2024.007

The Microscopic Study of the Evolution of the Phase Transformation in the Tin after the Indentation of an Inoculator

Alena Michalcová ORCID...1, ©árka Msallamová ORCID...1, Dominika Fink ORCID...1, Jiří Kubásek ORCID...1, Martin Friák ORCID...2
1 Department of Metals and Corrosion Engineering, University of Chemistry and Technology in Prague. Tech-nická 5, 166 28 Prague 6. Czech Republic
2 Institute of Physics of Materials, v.v.i., Czech Academy of Sciences, ®iľkova 22, Brno, 61662, Czech Republic

This paper describes β-Sn to α-Sn transformation in its initial phase. This process is also known as a tin pest and currently it causes problems mainly in the field of soldering materials. To avoid misrepresenta-tion of the results of artificial ageing of the samples; we have decided to use historical materials for our study. A sample from historical organ pipes was indented by naturally formed α-Sn polycrystalline parti-cles by the load of 1 kg. The sample in the initial state was observed by SEM and analysed by EBSD mapping. The position of inoculator particles was documented again by SEM observation. Subseqently, the sample was freezed at -50 °C. The evolution of cracks started after 2.5h in the vicinity of indented α-Sn particle. After 5 h of freezing, new cracks were observed also in the untouched parts of the sample. The crystallografical interconnectedness was not proven for polycrystalline samples.

Keywords: Tin Pest, Microscopy, Pictures, Inoculator
Grants and funding:

The authors acknowledge the Czech Science Foundation for the financial support received under the Project No. 22-05801S. The authors acknowledge the assistance in TEM sample preparation provided by the Research Infrastructure NanoEnviCz, supported by the Ministry of Education, Youth and Sports of the Czech Republic under Project No. LM2018124

Received: August 29, 2023; Revised: November 14, 2023; Accepted: January 2, 2024; Prepublished online: January 8, 2024; Published: February 23, 2024  Show citation

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Michalcová A, Msallamová ©, Fink D, Kubásek J, Friák M. The Microscopic Study of the Evolution of the Phase Transformation in the Tin after the Indentation of an Inoculator. Manufacturing Technology. 2024;24(1):83-86. doi: 10.21062/mft.2024.007.
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