Strains generated at austenitic:ferritic dissimilar welds during elastic pressure changes at high temperature

Williams, J.A.; Parker, J.D.

doi:10.1016/0921-5093(95)09778-3

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The majority of published studies on the dissimilar welded joints with Ni-based weld metal was focused on the welds with 2.25Cr-1Mo bainitic steel base material [7][8][9][10][11]. The literature information about dissimilar weldments between the 9%Cr martensitic steels and austenitic creep-resistant steels is rather limited [12][13][14] and about their creep deformation and fracture behavior even missing.…”

Section: Introductionmentioning

confidence: 98%

Microstructure and creep characteristics of dissimilar T91/TP316H martensitic/austenitic welded joint with Ni-based weld metal

Falat

Svoboda

Výrostková

et al. 2012

Materials Characterization

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Section: Introductionmentioning

confidence: 98%

Microstructure and creep characteristics of dissimilar T91/TP316H martensitic/austenitic welded joint with Ni-based weld metal

Falat

Svoboda

Výrostková

et al. 2012

Materials Characterization

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“…P91 heat-resistant steel is a kind of improved type martensite 9 Cr1Mo steel 1,2 . The steel is fabricated by adding V, Nb, N and other strengthening elements in the steel containing Cr and Mo elements.…”

Section: Introductionmentioning

confidence: 99%

Effect of Annealing Time on Microstructure and Properties of P91 Heat Resistant Steel SMAW Joint

Wang

et al. 2022

Mat. Res.

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The microstructure and properties of shielded metal arc welding (SMAW) joint of P91 heat-resistant steel annealed at different holding time were observed and analyzed. The results show that the martensite and residual austenite structures in the weld zone and coarse grain heat affected zone (CGHAZ) were transformed with the extension of holding time. After 760°C+4h annealing, a large number of white rod-shaped precipitates appeared in the weld zone. The main components of precipitates were Fe, Cr, Mn, V, Si, and a small amount of oxides appeared. After 760°C+5h annealing treatment, relatively fine white granular precipitation appeared in the weld zone, and a large number of oxides and some precipitates have been dissolved. After 760°C+6h annealing treatment, the precipitated phases were composed of Fe-Cr, Fe 3 Si, Ni-Cr-Fe, Fe 2 MnAl. Compared with the annealing treatment for 5h, the microstructure of the precipitated phase is fine and uniform, dispersion distribution of second phase particles, and the material mechanics is relatively stable.

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“…P91 heat-resistant steel is a kind of modified martensite alloys steel (9Cr-1Mo). The microstructure is composed of martensite and ferrite, which has good structure stability, high temperature enduring strength and high temperature creep strength [1][2][3]. Up to now, P91 steel has been most widely used in main steam pipeline, the superheater and reheater of plant boiler, the heat exchanger of nuclear, boiler tube of oil cracking equipment [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Influence of holding time of annealing treatment on microstructure and properties of TIG welded joint for P91 heat-resistant steel tube

Liu¹,

Sun²,

Xu³

et al. 2018

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Optical microscope, micro-hardness tester, scanning electron microscope (SEM) and X-ray diffractometer (XRD) were applied to analyze the microstructure and properties of tungsten inert-gas arc welding (TIG) joint for P91 heat resistant steel under the different holding time of annealing treatment. The test results show that the martensite structure and retained austenite structure had a change in weld zone and heat affected zone (HAZ) with the increase of the holding time from 4 to 6 h with 760 • C annealing. The microstructure in the weld zone shows the finer characteristic. The hardness in all regions tends to decrease after the annealing treatment, and the hardness is about 200-240 HV. However, the hardness in the weld zone is about 200-270 HV. The highest hardness in the weld zone and HAZ was observed when the holding time was 6 h, and some carbide was dissolved partially with the increase of the holding time. Moreover, when the holding time was 6 h with 760 • C annealing, some small dispersed precipitated phases were distributed in the substrate. Thus, the microstructure and properties of TIG welded joint used for holding time 6 h are better than those for holding time 4 and 5 h.

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Strains generated at austenitic:ferritic dissimilar welds during elastic pressure changes at high temperature

Cited by 4 publications

References 2 publications

Microstructure and creep characteristics of dissimilar T91/TP316H martensitic/austenitic welded joint with Ni-based weld metal

Microstructure and creep characteristics of dissimilar T91/TP316H martensitic/austenitic welded joint with Ni-based weld metal

Effect of Annealing Time on Microstructure and Properties of P91 Heat Resistant Steel SMAW Joint

Influence of holding time of annealing treatment on microstructure and properties of TIG welded joint for P91 heat-resistant steel tube

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