Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded
Nema prikaza
Autori
Dobrojevic, M.Rakin, Marko P.
Gubeljak, Nenad
Cvijović, Ivana
Zrilic, M.
Krunich, N.
Sedmak, Aleksandar S.
Konferencijski prilog
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
In this paper the micromechanical approach to ductile fracture was applied in a study of constraint effect on crack growth initiation in mismatched welded joints. The single-edged notched bend specimens (precrack length a(0)/W=0.32) were experimentally and numerically analyzed. The coupled micromechanical model proposed by Gurson, Tvergaard and Needleman was used. Constraint effect was tested by varying widths of the welded joints (6, 12 and 18mm). High-strength low-alloyed (HSLA) steel was used as the base metal in a quenched and tempered condition. The flux-cored are-welding process in shielding gas was used. Two different fillers were selected to obtain over- and undermatched weld metal. The micromechanical parameters used in prediction of the crack growth initiation on precracked specimen were calibrated on a round smooth specimen. The difference in fracture behavior between over- and undermatched welded joints obtained in experimental results was followed by numerical computations... of void volume fraction in front of the crack tip.
Ključne reči:
constraint effect / ductile fracture / high-strength low-alloyed steel / micromechanical model / mismatched welded jointIzvor:
Materials Science Forum, 2007, 555, 571-+Finansiranje / projekti:
- Ministry of Science and Environmental Protection [OI144027], Slo-Ser
Napomena:
- Research Trends in Contemporary Materials Science, 8th Conference of the Yugoslav-Materials-Research-Society (Yu-MRS), Sep 04-08, 2006, Herceg Novi, Montenegro
Kolekcije
Institucija/grupa
VinčaTY - CONF AU - Dobrojevic, M. AU - Rakin, Marko P. AU - Gubeljak, Nenad AU - Cvijović, Ivana AU - Zrilic, M. AU - Krunich, N. AU - Sedmak, Aleksandar S. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6701 AB - In this paper the micromechanical approach to ductile fracture was applied in a study of constraint effect on crack growth initiation in mismatched welded joints. The single-edged notched bend specimens (precrack length a(0)/W=0.32) were experimentally and numerically analyzed. The coupled micromechanical model proposed by Gurson, Tvergaard and Needleman was used. Constraint effect was tested by varying widths of the welded joints (6, 12 and 18mm). High-strength low-alloyed (HSLA) steel was used as the base metal in a quenched and tempered condition. The flux-cored are-welding process in shielding gas was used. Two different fillers were selected to obtain over- and undermatched weld metal. The micromechanical parameters used in prediction of the crack growth initiation on precracked specimen were calibrated on a round smooth specimen. The difference in fracture behavior between over- and undermatched welded joints obtained in experimental results was followed by numerical computations of void volume fraction in front of the crack tip. C3 - Materials Science Forum T1 - Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded VL - 555 SP - 571 EP - + DO - 10.4028/www.scientific.net/MSF.555.571 ER -
@conference{ author = "Dobrojevic, M. and Rakin, Marko P. and Gubeljak, Nenad and Cvijović, Ivana and Zrilic, M. and Krunich, N. and Sedmak, Aleksandar S.", year = "2007", abstract = "In this paper the micromechanical approach to ductile fracture was applied in a study of constraint effect on crack growth initiation in mismatched welded joints. The single-edged notched bend specimens (precrack length a(0)/W=0.32) were experimentally and numerically analyzed. The coupled micromechanical model proposed by Gurson, Tvergaard and Needleman was used. Constraint effect was tested by varying widths of the welded joints (6, 12 and 18mm). High-strength low-alloyed (HSLA) steel was used as the base metal in a quenched and tempered condition. The flux-cored are-welding process in shielding gas was used. Two different fillers were selected to obtain over- and undermatched weld metal. The micromechanical parameters used in prediction of the crack growth initiation on precracked specimen were calibrated on a round smooth specimen. The difference in fracture behavior between over- and undermatched welded joints obtained in experimental results was followed by numerical computations of void volume fraction in front of the crack tip.", journal = "Materials Science Forum", title = "Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded", volume = "555", pages = "571-+", doi = "10.4028/www.scientific.net/MSF.555.571" }
Dobrojevic, M., Rakin, M. P., Gubeljak, N., Cvijović, I., Zrilic, M., Krunich, N.,& Sedmak, A. S.. (2007). Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded. in Materials Science Forum, 555, 571-+. https://doi.org/10.4028/www.scientific.net/MSF.555.571
Dobrojevic M, Rakin MP, Gubeljak N, Cvijović I, Zrilic M, Krunich N, Sedmak AS. Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded. in Materials Science Forum. 2007;555:571-+. doi:10.4028/www.scientific.net/MSF.555.571 .
Dobrojevic, M., Rakin, Marko P., Gubeljak, Nenad, Cvijović, Ivana, Zrilic, M., Krunich, N., Sedmak, Aleksandar S., "Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded" in Materials Science Forum, 555 (2007):571-+, https://doi.org/10.4028/www.scientific.net/MSF.555.571 . .