Characteristics of the weld interface in dissimilar austentic-pearlitic steel welds

Pan, Chunxu; Zhang, Z

doi:10.1016/1044-5803(94)90070-1

Cited by 18 publications

(4 citation statements)

References 3 publications

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“…The Cr diffusion from the weld to P92 steel may lead to the formation of Cr-rich carbide precipitates. The carbide formation in Cr–Mo steel HAZ in the dissimilar weld of T91/347H has also been confirmed from previously reported work [ 17 , 59 ]. The major precipitates formed in HAZ were M(Cr, Fe) 23 C 6 and Cr 7 C 3 and Ni–Cr–Fe phase [ 17 ].…”

Section: Resultssupporting

confidence: 87%

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

Kumar,

Pandey,

Sirohi

et al. 2023

Heliyon

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Section: Resultssupporting

confidence: 87%

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

Kumar,

Pandey,

Sirohi

et al. 2023

Heliyon

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“…Their formation mechanisms have been studied elsewhere. 6,[18][19][20][25][26][27] The transition zone exhibited lower ductility when compared with the weld metal.…”

Section: Typical Successive Fractographymentioning

confidence: 99%

“…4,8 In previous work, the successive microstructural variations in the heterogeneous interfacial region were directly observed using transmission electron microscopy (TEM). 6,[18][19][20] However, there is little information available on direct examination of the entire joint comprising the weld metal, transition zone, heat affected zone (HAZ) and base metal, all in one fracture surface. 11 As well as its utility for characterising weld microstructure, fractographic evaluation is also essential for understanding the mechanical behaviour of welded structures.…”

Section: Introductionmentioning

confidence: 99%

Direct fractographic and microstructural evaluation of different zones within welded dissimilar steel joints

Pan¹

2005

Materials Science and Technology

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Fractographic and microstructural evaluations of fracture surfaces of different zones within welded dissimilar steel joints are difficult to conduct by conventional methods because of the very small dimensions of the various regions in the joint. In the present paper, a novel non-standard notch impact specimen is introduced. By using this specimen, a cross-sectioned fracture was obtained, and successive variations of the fracture surfaces, corresponding to individual microstructures of all regions in the joint, were clearly identified. When comparing the fracture surface between as welded and post-weld heat treated (PWHT) joints, it was found that the transition zone fractured in a brittle disbonding manner owing to carbon migration, and the location of the poorest part in the joints transferred from the heat affected zone (HAZ) in the as welded state into the transition zone after post-weld heat treatment. The described specimen and analysis approach can be used to conduct other fractographic and microstructural evaluations, such as in tensile tests.

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“…Scanning electron microscopy, transmission electron microscopy, and energy dispersive X-ray spectroscopy adopted by Gotalskii et al [2] directly observed the weld interface of austenitic steel and pearlitic steel dissimilar alloy welds, and they found that there are two types of interfaces: austenite/martensite and martensite-like/ferrite. Pan and Zhang [3] proposed a method to reduce the width of such martensite interfaces. Schmidova et al [4] performed hardness measurements in critical areas of pearlitic and austenitic steel welds and translated them into carbon concentration changes, which confrmed the presence of large concentrations and structural inhomogeneity at the fusion line, and such fusion zones were considered to be unstable [5].…”

Section: Introductionmentioning

confidence: 99%

Intelligent Testing and Analysis of Dissimilar Steel Welds for Industrial Throttle Flowmeter

Tong¹,

Xu³

et al. 2023

Mobile Information Systems

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The throttling flowmeter used in utility boilers has been used as a measuring instrument for a long time. However, its safety performance, such as welding, lacks enough attention. The manufacturing welds of the throttling flowmeter are welded with austenitic stainless steel and pearlitic heat-resistant steel. Cracks and other defects are generally found in the inspection and detection of the manufacturing welds of throttling flowmeters in service, which have serious potential accidents. To find out the relationship between weldingdissimilar steels and defects, the microhardness indentation method was used to measure the residual stress of welding. Combined with the self-developed calculation software of microscopic indentation residual stress distribution, we used the difference between the color of the indentation area and the surrounding area to quickly measure the indentation strain collected by the microscope using the computer image recognition algorithm, which greatly improved the accuracy and speed of the microscopic indentation residual stress test. The results show that the residual stress at the weld of dissimilar steel is relatively large, and the mechanical property test is generally unqualified. The microindentation residual stress analysis method based on computer image recognition is used to quickly, intuitively, and accurately reveal the direct relationship between the combination of dissimilar steel welding materials and the generation of cracks and other defects.

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Characteristics of the weld interface in dissimilar austentic-pearlitic steel welds

Cited by 18 publications

References 3 publications

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

Direct fractographic and microstructural evaluation of different zones within welded dissimilar steel joints

Intelligent Testing and Analysis of Dissimilar Steel Welds for Industrial Throttle Flowmeter

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