Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings
Apstrakt
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.
Ključne reči:
Al-Zn-Mg-Cu alloys forgings / fracture toughness / microstructure / fracture modes / micromechanical modelIzvor:
Philosophical Magazine, 2008, 88, 27, 3153-3179Finansiranje / projekti:
- Ministry of Science and Techonological Development of the Republic of Serbia [144027]
DOI: 10.1080/14786430802502559
ISSN: 1478-6435
WoS: 000261696800002
Scopus: 2-s2.0-57749084452
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Cvijović, Zorica M. AU - Vratnica, M. AU - Rakin, Marko P. AU - Cvijović-Alagić, Ivana PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3590 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. T2 - Philosophical Magazine T1 - Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings VL - 88 IS - 27 SP - 3153 EP - 3179 DO - 10.1080/14786430802502559 ER -
@article{ author = "Cvijović, Zorica M. and Vratnica, M. and Rakin, Marko P. 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.", journal = "Philosophical Magazine", title = "Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings", volume = "88", number = "27", pages = "3153-3179", doi = "10.1080/14786430802502559" }
Cvijović, Z. M., Vratnica, M., Rakin, M. P.,& Cvijović-Alagić, I.. (2008). Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings. in Philosophical Magazine, 88(27), 3153-3179. https://doi.org/10.1080/14786430802502559
Cvijović ZM, Vratnica M, Rakin MP, 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 M., Vratnica, M., Rakin, Marko P., 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 . .