Journal ArticleDOI
Precipitation sequences in heat-affected zone of 2-25Cr-1 Mo steel during stress-relief heat treatment
TLDR
In this paper, the development of precipitation microstructure during stress-relief heat treatment of the bainitic heat-affected zone in 2.25Cr-1Mo steel has been studied using transmission electron microscopy, scanning transmission electron microscope, and energy-dispersive X-ray analysis techniques on carbon extraction replicas and thin foils.Abstract:
The development of precipitation microstructure during stress-relief heat treatment of the bainitic heat-affected zone in 2.25Cr-1Mo steel has been studied using transmission electron microscopy, scanning transmission electron microscopy, and energy-dispersive X-ray analysis techniques on carbon extraction replicas and thin foils. Examinations have been made of four 2.25Cr-1Mo alloys (‘pure’, doped with 540 ppm phosphorous, doped with 500 ppm tin, and commercial purity) as part of an overall investigation into stress-relief cracking in 2.25Cr- 1Mo steel. The precipitation behaviour is discussed in terms of its relevance to fracto graphic observations and segregation characteristics which are reported in detail elsewhere.read more
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A study of stress relief cracking in 214 Cr 1 Mo steel—II. The effects of multi-component segregation
TL;DR: In this paper, the authors examined the stress-relief-cracking in the coarse-grained heat-affected-zone microstructure of 2 1 4 Cr 1 Mo steel and compared it to (500 ppm) tin-doped and commercial-purity alloys.
Journal ArticleDOI
Analysis of carbides formed during accelerated aging of 2·25Cr–1Mo steel
TL;DR: In this paper, a series of simulated microstructures similar to those observed in specimens after long-time service was used to monitor the microstructural changes in the specimens and the analysis was combined with an in situ electron diffraction identification of the crystal structure of the carbides present.
Journal ArticleDOI
Creep behaviour of post-weld heat-treated 2.25Cr-1Mo ferritic steel base, weld metal and weldments
TL;DR: In this paper, the authors evaluated the creep rupture behavior of 2.25Cr-1Mo ferritic steel at 773 and 823 K over a stress range of 130-300 MPa.
Journal ArticleDOI
Reheat cracking—A review of recent studies☆
A. Dhooge,A. Vinckier +1 more
TL;DR: In this paper, the authors summarized the most recent information on the topic of reheat cracking in low alloy constructional steels, ferritic creep resistances, nickel-base alloys and austenitic stainless steels.
Journal ArticleDOI
Sulphur segregation and high-temperature brittle intergranular fracture in alloy steels
TL;DR: In this article, the authors used scanning Auger spectroscopy to identify two types of sulphur enrichment at cracks and on free surfaces at high temperature in detail using a model of high temperature brittle intergranular fracture.
References
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Equilibrium segregation in a ternary solution: A model for temper embrittlement
TL;DR: In this paper, the thermodynamic formalism of equilibrium segregation, when taking into account the interaction of M and I atoms in an iron base solid solution can explain this behaviour, is developed.
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The efficiency of production of characteristic x-radiation in thick targets of a pure element
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TL;DR: In this article, a simple theoretical expression for K quanta production in directions at large angles to the surface of a thick target, neglecting absorption, was proposed, and the ratio of indirect to total production was shown to be in agreement with experimental results both in magnitude and in independence of overvoltage U0.
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Cavitation in creep
TL;DR: In this paper, the development of our present understanding of the phenomenon of creep cavitation is reviewed, and the status of research into nickel-base superalloys is reviewed with reference being made to such effects as regenerative heat-treatment.
Journal ArticleDOI
Intergranular embrittlement of iron-carbon alloys by impurities
J. B. Rellick,C.J. McMahon +1 more
TL;DR: In this article, a model for transient embrittlement in alloy steels is proposed and tested, which is relevant to the phenomenon of "500°F" embrittlements in Alloy steels.