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

Abstract

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
Vol18
No4
Pages1166-1182
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
DOIDOI:10.1016/j.acme.2018.02.014
URL https://www.sciencedirect.com/science/article/abs/pii/S1644966518300323
Languageen angielski
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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 (2018-11-16)
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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.
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