RT Journal Article
SR Electronic
A1 Michalcová, Alena
A1 Msallamová, Šárka
A1 Fink, Dominika
A1 Kubásek, Jiří
A1 Friák, Martin
T1 The Microscopic Study of the Evolution of the Phase Transformation in the Tin after the Indentation of an Inoculator
JF Manufacturing Technology Journal
YR 2024
VO 24
IS 1
SP 83
OP 86
DO 10.21062/mft.2024.007
UL https://journalmt.com/artkey/mft-202401-0006.php
AB 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.