An attempt has been made to model the plane-strain fracture toughness, KIc, in Al-Zn-Mg-Cu alloy forgings subjected to overageing. The proposed model, based on the multiple micromechanisms, reveals the quantitative relations between fracture toughness, fraction of all fracture modes and microstructural parameters associated with multiscale-sized second-phase particles and precipitate-free zones. The new model is validated by the present quantitative data of microstructural and fractographic analysis performed along with mechanical tests on hot-forged plates in T73 condition. The relevant parameters changed by the compositional variations were determined in two orientations. It was found that the predicted KIc values represent the tendency of fracture toughness change well. The new model provides better agreement for the case of dominant transgranular fracture mode.
TY - JOUR
AU - Cvijović, Zorica
AU - Vratnica, Maja
AU - Rakin, Marko
AU - Cvijović-Alagić, Ivana
PY - 2008
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1292
AB - An attempt has been made to model the plane-strain fracture toughness, KIc, in Al-Zn-Mg-Cu alloy forgings subjected to overageing. The proposed model, based on the multiple micromechanisms, reveals the quantitative relations between fracture toughness, fraction of all fracture modes and microstructural parameters associated with multiscale-sized second-phase particles and precipitate-free zones. The new model is validated by the present quantitative data of microstructural and fractographic analysis performed along with mechanical tests on hot-forged plates in T73 condition. The relevant parameters changed by the compositional variations were determined in two orientations. It was found that the predicted KIc values represent the tendency of fracture toughness change well. The new model provides better agreement for the case of dominant transgranular fracture mode.
PB - Taylor & Francis Ltd, Abingdon
T2 - Philosophical Magazine
T1 - Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings
EP - 3179
IS - 27
SP - 3153
VL - 88
DO - 10.1080/14786430802502559
ER -
@article{
author = "Cvijović, Zorica and Vratnica, Maja and Rakin, Marko and Cvijović-Alagić, Ivana",
year = "2008",
abstract = "An attempt has been made to model the plane-strain fracture toughness, KIc, in Al-Zn-Mg-Cu alloy forgings subjected to overageing. The proposed model, based on the multiple micromechanisms, reveals the quantitative relations between fracture toughness, fraction of all fracture modes and microstructural parameters associated with multiscale-sized second-phase particles and precipitate-free zones. The new model is validated by the present quantitative data of microstructural and fractographic analysis performed along with mechanical tests on hot-forged plates in T73 condition. The relevant parameters changed by the compositional variations were determined in two orientations. It was found that the predicted KIc values represent the tendency of fracture toughness change well. The new model provides better agreement for the case of dominant transgranular fracture mode.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Philosophical Magazine",
title = "Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings",
pages = "3179-3153",
number = "27",
volume = "88",
doi = "10.1080/14786430802502559"
}
Cvijović, Z., Vratnica, M., Rakin, M.,& Cvijović-Alagić, I.. (2008). Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings. in Philosophical Magazine
Taylor & Francis Ltd, Abingdon., 88(27), 3153-3179.
https://doi.org/10.1080/14786430802502559
Cvijović Z, Vratnica M, Rakin M, Cvijović-Alagić I. Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings. in Philosophical Magazine. 2008;88(27):3153-3179.
doi:10.1080/14786430802502559 .
Cvijović, Zorica, Vratnica, Maja, Rakin, Marko, Cvijović-Alagić, Ivana, "Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings" in Philosophical Magazine, 88, no. 27 (2008):3153-3179,
https://doi.org/10.1080/14786430802502559 . .
