Statistical study of compressive creep parameters of an alumina spinel refractory
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
Standard
in: Ceramics International : CI, Jahrgang 46.2020, Nr. 10A, 01.03.2020, S. 14662-14668.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
Harvard
APA
Vancouver
Author
Bibtex - Download
}
RIS (suitable for import to EndNote) - Download
TY - JOUR
T1 - Statistical study of compressive creep parameters of an alumina spinel refractory
AU - Samadi, Soheil
AU - Jin, Shengli
AU - Gruber, Dietmar
AU - Harmuth, Harald
AU - Schachner, Stefan
PY - 2020/3/1
Y1 - 2020/3/1
N2 - Refractory microstructure and phase composition play important roles in the creep resistance of refractories at high temperatures. The production processing causes heterogeneity of refractory microstructure, which affects the determination of representative creep parameters. The present study focused on the statistical study of compressive creep parameters with a limited number of tests. Different sampling approaches were applied to examine the influence of the heterogeneity. A correlation analysis exhibited an evident negative correlation coefficient between the bulk density of specimens and their creep strain rates. The Norton-Bailey creep parameters of the primary creep stage were received with an inverse evaluation method from datasets with different number of uniaxial compressive creep curves under at least two different constant loads. Their mean values and standard deviations were evaluated for different temperatures. The statistical results of the dataset with combined 7 creep curves (out of 9) allow for elaborated considering the microstructural heterogeneity of refractories in the thermomechanical modelling of industry vessels.
AB - Refractory microstructure and phase composition play important roles in the creep resistance of refractories at high temperatures. The production processing causes heterogeneity of refractory microstructure, which affects the determination of representative creep parameters. The present study focused on the statistical study of compressive creep parameters with a limited number of tests. Different sampling approaches were applied to examine the influence of the heterogeneity. A correlation analysis exhibited an evident negative correlation coefficient between the bulk density of specimens and their creep strain rates. The Norton-Bailey creep parameters of the primary creep stage were received with an inverse evaluation method from datasets with different number of uniaxial compressive creep curves under at least two different constant loads. Their mean values and standard deviations were evaluated for different temperatures. The statistical results of the dataset with combined 7 creep curves (out of 9) allow for elaborated considering the microstructural heterogeneity of refractories in the thermomechanical modelling of industry vessels.
KW - Creep
KW - heterogeneity
KW - statistical study
KW - Refractories
UR - http://www.scopus.com/inward/record.url?scp=85081017201&partnerID=8YFLogxK
U2 - https://doi.org/10.1016/j.ceramint.2020.02.267
DO - https://doi.org/10.1016/j.ceramint.2020.02.267
M3 - Article
VL - 46.2020
SP - 14662
EP - 14668
JO - Ceramics International : CI
JF - Ceramics International : CI
SN - 0272-8842
IS - 10A
ER -