Creep crack growth properties of P91 and P22 welded joints
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2017
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The ferritic P22 and bainitic-martenstic P91 steel welded joints operating at elevated temperatures are highly vulnerable to premature failure, because microstructure gradients can lead to cracking in the heat-affected zone, commonly referred to as type IV cracking. Creep crack growth tests have been performed using compact tension specimens made of P91 and P22 weld joints at temperatures of 600 and 550 degrees C, respectively. The creep crack growth characterization through empirical equation of C* was the main fracture parameter for relating behaviour of component's regions. Results have shown that, for a specific value of C* parameter, the weld metal and heat-affected zone had similar crack growth rates, which were about two times faster than base metal rates, because of lower creep strength that leads to a conclusion that the creep cracks will most likely initiate in the heat-affected zone region.
Ključne reči:
P91 steel / P22 steel / heat-affected zone (HAZ) / CT specimen / creep crack growth / C*Izvor:
Fatigue & Fracture of Engineering Materials & Structures, 2017, 40, 8, 1267-1275Izdavač:
- Wiley, Hoboken
Finansiranje / projekti:
- Mikromehanički kriterijumi oštećenja i loma (RS-MESTD-Basic Research (BR or ON)-174004)
DOI: 10.1111/ffe.12628
ISSN: 8756-758X
WoS: 000406978900010
Scopus: 2-s2.0-85018733531
Institucija/grupa
Inovacioni centarTY - JOUR AU - Sedmak, Aleksandar AU - Swei, M. AU - Petrovski, Blagoj PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2526 AB - The ferritic P22 and bainitic-martenstic P91 steel welded joints operating at elevated temperatures are highly vulnerable to premature failure, because microstructure gradients can lead to cracking in the heat-affected zone, commonly referred to as type IV cracking. Creep crack growth tests have been performed using compact tension specimens made of P91 and P22 weld joints at temperatures of 600 and 550 degrees C, respectively. The creep crack growth characterization through empirical equation of C* was the main fracture parameter for relating behaviour of component's regions. Results have shown that, for a specific value of C* parameter, the weld metal and heat-affected zone had similar crack growth rates, which were about two times faster than base metal rates, because of lower creep strength that leads to a conclusion that the creep cracks will most likely initiate in the heat-affected zone region. PB - Wiley, Hoboken T2 - Fatigue & Fracture of Engineering Materials & Structures T1 - Creep crack growth properties of P91 and P22 welded joints EP - 1275 IS - 8 SP - 1267 VL - 40 DO - 10.1111/ffe.12628 ER -
@article{ author = "Sedmak, Aleksandar and Swei, M. and Petrovski, Blagoj", year = "2017", abstract = "The ferritic P22 and bainitic-martenstic P91 steel welded joints operating at elevated temperatures are highly vulnerable to premature failure, because microstructure gradients can lead to cracking in the heat-affected zone, commonly referred to as type IV cracking. Creep crack growth tests have been performed using compact tension specimens made of P91 and P22 weld joints at temperatures of 600 and 550 degrees C, respectively. The creep crack growth characterization through empirical equation of C* was the main fracture parameter for relating behaviour of component's regions. Results have shown that, for a specific value of C* parameter, the weld metal and heat-affected zone had similar crack growth rates, which were about two times faster than base metal rates, because of lower creep strength that leads to a conclusion that the creep cracks will most likely initiate in the heat-affected zone region.", publisher = "Wiley, Hoboken", journal = "Fatigue & Fracture of Engineering Materials & Structures", title = "Creep crack growth properties of P91 and P22 welded joints", pages = "1275-1267", number = "8", volume = "40", doi = "10.1111/ffe.12628" }
Sedmak, A., Swei, M.,& Petrovski, B.. (2017). Creep crack growth properties of P91 and P22 welded joints. in Fatigue & Fracture of Engineering Materials & Structures Wiley, Hoboken., 40(8), 1267-1275. https://doi.org/10.1111/ffe.12628
Sedmak A, Swei M, Petrovski B. Creep crack growth properties of P91 and P22 welded joints. in Fatigue & Fracture of Engineering Materials & Structures. 2017;40(8):1267-1275. doi:10.1111/ffe.12628 .
Sedmak, Aleksandar, Swei, M., Petrovski, Blagoj, "Creep crack growth properties of P91 and P22 welded joints" in Fatigue & Fracture of Engineering Materials & Structures, 40, no. 8 (2017):1267-1275, https://doi.org/10.1111/ffe.12628 . .