Anisotropy of fracture mechanical properties of carbon-containing refractories and its impact on cracking in a steel ladle lining
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in: Open ceramics, Jahrgang 14.2023, Nr. June, 100363, 02.05.2023.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Anisotropy of fracture mechanical properties of carbon-containing refractories and its impact on cracking in a steel ladle lining
AU - Gruber, Dietmar
AU - Schachner, Stefan
AU - Harmuth, Harald
N1 - Publisher Copyright: © 2023 The Authors
PY - 2023/5/2
Y1 - 2023/5/2
N2 - Cracks are occasionally observed in bricks installed in steel ladle sidewalls. Three magnesia-carbon refractories used in steel ladles were investigated in terms of the anisotropy of the mechanical properties and their possible contribution to crack formation. The main differences between these bricks were the direction of the moulding force and the type of press used (spindle or hydraulic press). This study aimed to clarify the reasons for the inferior performance of one refractory material compared to other materials from a thermomechanical point of view. The results showed clear anisotropy in the elastic and fracture mechanical data. Brittleness was the lowest and crack propagation resistance was the highest when the crack extended parallel to the moulding force. Therefore, the lowest cracking vulnerability was observed in the case of a moulding force perpendicular to the longest brick edge and this was verified via field observations.
AB - Cracks are occasionally observed in bricks installed in steel ladle sidewalls. Three magnesia-carbon refractories used in steel ladles were investigated in terms of the anisotropy of the mechanical properties and their possible contribution to crack formation. The main differences between these bricks were the direction of the moulding force and the type of press used (spindle or hydraulic press). This study aimed to clarify the reasons for the inferior performance of one refractory material compared to other materials from a thermomechanical point of view. The results showed clear anisotropy in the elastic and fracture mechanical data. Brittleness was the lowest and crack propagation resistance was the highest when the crack extended parallel to the moulding force. Therefore, the lowest cracking vulnerability was observed in the case of a moulding force perpendicular to the longest brick edge and this was verified via field observations.
KW - Anisotropy
KW - Magnesia-carbon refractories
KW - Specific fracture energy
UR - http://www.scopus.com/inward/record.url?scp=85154043452&partnerID=8YFLogxK
U2 - 10.1016/j.oceram.2023.100363
DO - 10.1016/j.oceram.2023.100363
M3 - Article
AN - SCOPUS:85154043452
VL - 14.2023
JO - Open ceramics
JF - Open ceramics
SN - 2666-5395
IS - June
M1 - 100363
ER -