The effect of microstructure anisotropy on low temperature fracture of ultrafine-grained iron

Barbara Romelczyk-Baishya , Krzysztof Łęczycki , Magdalena Płocińska , Mariusz Kulczyk , Rafał Molak , Zbigniew Pakieła


This papers deals with the character on low (−180 °C) temperature fracture of iron. Microcrystalline and ultrafine-grained (UFG) iron rods were investigated. To obtain UFG material 20 mm in diameter iron rod was hydrostatically extruded (HE) in two steps: from 20 to 12 mm and from 12 to 8 mm. Because of microstructure anisotropy caused by HE mini-disc and mini-beam samples were cut off from perpendicular and longitudinal cross-section of the rods. Microcrystalline rod fractured in brittle manner at low temperature for both cross-sections, but in UFG iron fracture character depended on grain's shape. For samples were crack propagates parallel to the grain's elongation axis intercrystalline fracture occurred. For mini-beams were crack propagates crosswise to the grain elongation axis transcrystalline fracture occurred and force deflection curve was similar to those obtained for room temperature.
Author Barbara Romelczyk-Baishya (FMSE / DMD)
Barbara Romelczyk-Baishya,,
- Division of Materials Design
, Krzysztof Łęczycki
Krzysztof Łęczycki,,
, Magdalena Płocińska (FMSE / DMD)
Magdalena Płocińska,,
- Division of Materials Design
, Mariusz Kulczyk - Instytut Wysokich Ciśnień Polskiej Akademii Nauk (Instytut Wysokich Ciśnień Polskiej Akademii Nauk)
Mariusz Kulczyk,,
, Rafał Molak (FMSE / DMD)
Rafał Molak,,
- Division of Materials Design
, Zbigniew Pakieła (FMSE / DMD)
Zbigniew Pakieła,,
- Division of Materials Design
Journal seriesArchives of Civil and Mechanical Engineering, ISSN 1644-9665, (A 30 pkt)
Issue year2018
Publication size in sheets0.8
Keywords in PolishŻelazo, nanomateriały, pękanie, obniżona temperatura, zginanie zminiaturyzowanych próbek
Keywords in EnglishIron, Nanomaterials, Fracture, Low temperature, Small punch test
Languageen angielski
The effect of microstructure anisotropy on low temperature fracture of ultrafine-grained iron.pdf 6.41 MB
Score (nominal)30
ScoreMinisterial score = 30.0, 08-10-2018, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 08-10-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.216 (2) - 2016=1.922 (5)
Citation count*1 (2018-12-29)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.