Effect of geometric construction on residual stress distribution in designing a nuclear rotor joined by multipass narrow gap welding

Tan, Li; Zhang, Linjie; Zhang, Jianxun; Dong, Zhiwei

doi:10.1016/j.fusengdes.2014.03.080

Cited by 25 publications

(14 citation statements)

References 28 publications

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“…It should be pointed out that residual stress in the welded rotor was reduced significantly after post weld heat treatment in terms of XRD measurement [27]. In addition, the welding residual stress in welded CT specimen will be further released after the fabrication of initial notch and the stress relief heat treatment [2,28].…”

Section: Fcg Testsmentioning

confidence: 99%

Transitional behavior of fatigue crack growth in welded joint of 25Cr2Ni2MoV steel

Zhu

Xuan

2015

Engineering Fracture Mechanics

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Section: Fcg Testsmentioning

confidence: 99%

Transitional behavior of fatigue crack growth in welded joint of 25Cr2Ni2MoV steel

Zhu

Xuan

2015

Engineering Fracture Mechanics

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“…Currently, the welding rotor is gradually prevalent for its saving cost and flexibility [3,4]. Narrow gap submerged arc welding (NG-SAW) method is chosen to manufacture welding rotor for high production rate and low production cost [5,6]. However, in the reliability evaluation of equipment, fracture failure has become one of the main problems affecting the reliability of equipment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Trace Element on Microstructure and Fracture Toughness of Weld Metal

Fang

Zhao

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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The microstructure and fracture toughness of weld metal under Ti-free and Ti-containing different fluxes were investigated in this study. It was found that the trace element Ti of flux in submerged arc welding produced significant influence on the fracture toughness. The addition of 60 ppm Ti induced the sharp increase in J 0.2 value from 232.78 to 364.08 kJ/m 2 . Microstructure characterization revealed that a large number of oxide inclusions prompted the nucleation of acicular ferrites and refined grains, which improved the fracture toughness of Ti-containing weld metal greatly. Moreover, the crack propagation path was more tortuous and bifurcated due to the small amount of carbide precipitations along grain boundaries and blocky martensite-austenite islands for Ti-containing weld metal. Meanwhile, the large-angle grain boundaries caused crack deflection and increased the resistance of crack propagation compared to Ti-free weld metal.

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“…Such joints are normally produced using conventional fusion welding processes [12], high power beam techniques [11,13,14] and advanced friction stir welding [15]. Nowadays, narrow gap submerged arc welding (NG-SAW) is applied on largescale rotor steels manufacture increasingly owing to its low cost and high efficiency without losing weld quality [16,17].…”

Section: Introductionmentioning

confidence: 99%

Creep behavior and microstructure evaluation of welded joint in dissimilar modified 9Cr–1Mo steels

Liu

et al. 2015

Materials Science and Engineering: A

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Effect of geometric construction on residual stress distribution in designing a nuclear rotor joined by multipass narrow gap welding

Cited by 25 publications

References 28 publications

Transitional behavior of fatigue crack growth in welded joint of 25Cr2Ni2MoV steel

Transitional behavior of fatigue crack growth in welded joint of 25Cr2Ni2MoV steel

Effect of Trace Element on Microstructure and Fracture Toughness of Weld Metal

Creep behavior and microstructure evaluation of welded joint in dissimilar modified 9Cr–1Mo steels

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