Journal ArticleDOI
Some studies on P91 steel and their weldments
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TLDR
In this article, microstructure evolution in P91 steel and their weldments are reviewed in as-virgin and heat treatment and creep exposure condition, and the role of grain coarsening, Cr/Fe ratio, lath widening and dislocation density on creep rupture life of base metal and weldments is discussed.About:
This article is published in Journal of Alloys and Compounds.The article was published on 2018-04-30. It has received 155 citations till now. The article focuses on the topics: Creep & Solid solution strengthening.read more
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A critical review on dissimilar welds joint between martensitic and austenitic steel for power plant application
Gaurav Dak,Chandan Pandey +1 more
TL;DR: In this paper, the microstructure and mechanical behavior of the dissimilar welded joint (DWJ) between ferritic-martensitic steel and austenitic grade steel along with its application have been summarized in Ultra Super Critical (USC) power plant.
Journal ArticleDOI
Role of evolving microstructure on the mechanical behaviour of P92 steel welded joint in as-welded and post weld heat treated state
TL;DR: In this article, an autogenous gas tungsten arc welded P92 weld joint was subjected to two different post weld heat treatment (PWHT) procedures, which reduced the heterogeneity gradient along the weld cross section.
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Study of mechanism, microstructure and mechanical properties of activated flux TIG welded P91 Steel-P22 steel dissimilar metal joint
TL;DR: In this article, the effect of different fluxes on the weld bead geometry was investigated and the possible mechanism for the increase in depth of penetration has been discussed, and the integrity of the weld joint made with MoO3 flux was investigated by evaluating metallurgical and mechanical characteristics in as-welded and post weld heat treated (750 °C/2
Journal ArticleDOI
Softening mechanism of P91 steel weldments using heat treatments
TL;DR: In this paper, the microstructure of weld fusion and heat affected zone (HAZ) were characterized in different heat treatment conditions using optical microscope and scanning electron microscope, and two different type of heat treatments including the postweld direct tempering (PWDT) and re-austenitizing based tempering(PWNT) treatment.
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Study on effect of double austenitization treatment on fracture morphology tensile tested nuclear grade P92 steel
Chandan Pandey,Manas Mohan Mahapatra,Pradeep Kumar,Prakash Kumar,Nitin Saini,J.G. Thakare,S. Kumar +6 more
TL;DR: In this article, the effect of conventional normalizing and tempering (CNT) and double austenitization-based normalizing-and-tempering (DNT) process on microstructure characteristic and mechanical behavior was studied for P92 steel.
References
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Journal ArticleDOI
A new model for hydrogen-assisted cracking (hydrogen “embrittlement”)
TL;DR: A new model for hydrogen-assisted cracking is presented in this article, which explains the observations of decreasing microscopic plasticity and changes of fracture modes with decreasing stress intensities at crack tips during stress-corrosion cracking and HAC of quenched-and tempered steels.
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Strengthening Mechanisms of Creep Resistant Tempered Martensitic Steel
TL;DR: In this article, the authors reviewed the creep deformation resistance and rupture life of high Cr ferritic steel with a tempered martensitic lath structure, and focused on the following three subjects: creep mechanism of the ferritic steels, its alloy design for further strengthening, and loss of its creep rupture strength after long-term use.
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Elevated temperature ferritic and martensitic steels and their application to future nuclear reactors
TL;DR: In the 1970s, high chromium (9-12%Cr) ferritic/martensitic steels became candidates for elevated temperature applications in the core of fast reactors.
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Residual stress distributions and their influence on fatigue lifetimes
G. A. Webster,A.N. Ezeilo +1 more
TL;DR: In this paper, a non-destructive method for measuring residual stresses in structural engineering components is described. But the method is not suitable for the analysis of the residual stress distributions introduced by welding and the beneficial stresses produced by autofrettage, cold hole expansion and shot peening.
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Microstructure and long-term creep properties of 9–12% Cr steels
TL;DR: In this article, the authors have demonstrated that long-term microstructure stability in 9-12% Cr steels under technical loading conditions is equivalent to precipitate stability and that high Cr contents of 10% and above in the steels accelerate Z-phase precipitation, which may completely dissolve fine V and Nb containing MX nitrides.