Journal ArticleDOI
Microstructure and hardness studies of the electron beam welded zone of Hastelloy C-276
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In this paper, a scanning electron microscope (SEM) having the attachment of an energy dispersive system (EDS) has been employed to study the resulting microstructure and micro-eutectic phases.About:
This article is published in Journal of Alloys and Compounds.The article was published on 2005-03-22. It has received 92 citations till now. The article focuses on the topics: Scanning electron microscope & Microstructure.read more
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Microstructure and mechanical properties of alloy C-276 weldments fabricated by continuous and pulsed current gas tungsten arc welding techniques
TL;DR: In this article, the effects of switching over from gas tungsten arc welding (GTAW) to pulsed current Gas Tungsten Arc Welding (PCGTAw) on the quality of joints produced in Hastelloy C-276 material were investigated.
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Ultrasonic vibration assisted laser welding of nickel-based alloy and Austenite stainless steel
TL;DR: In this article, ultrasonic vibration assisted laser welding (ULW) was used to solve the problems in laser welding of Hastelloy C-276 and austenite stainless steel 304 dissimilar materials.
Journal ArticleDOI
Improvement of wear resistance of Hastelloy C-276 through laser surface melting
TL;DR: In this article, the influence of laser power and scan speed on metallurgical and mechanical properties of the Hastelloy C-276 was evaluated and the cooling rate was found to be more influential than the thermal gradient in determining the microstructural features.
Journal ArticleDOI
Improvement of Microstructure and Mechanical Behavior of Gas Tungsten Arc Weldments of Alloy C-276 by Current Pulsing
TL;DR: In this paper, the possibility of suppressing microsegregation in weldments by resorting to current pulse was investigated, and the results showed that the joints fabricated with pulsed current gave rise to narrower welds with practically no heat affected zone, a refined microstructure in the fusion zone, reduced micro-segregation, and superior combination of mechanical properties.
Journal ArticleDOI
Hot deformation characteristics and processing map of nickel-based C276 superalloy
TL;DR: In this paper, the authors analyzed the high-temperature deformation behaviors of C276 superalloy based on the true stress-true strain curves and showed that flow stress increases with the increasing of strain rate.
References
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Fundamentals of Physical Metallurgy
TL;DR: In this article, the authors present a review of Free-Energy Composition Diagrams (FECD) and a comparison with Massive Transformations (MT) for fcc and hcp materials.
Journal ArticleDOI
The welding metallurgy of HASTELLOY alloys C-4, C-22, and C-276
TL;DR: In this article, the welding metallurgy of HASTELLOY* alloys C-4, C-22, and C-276 has been determined, and an equivalent chemistry model is proposed to account for the microstructures observed in each alloy's weld metal.
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Electron Microscopic Analysis of Heterogeneous Precipitates in Hastelloy C-276
TL;DR: In this article, three distinct second phases were observed to form heterogeneously at grain and deformation twin boundaries when Hastelloy C-276 was aged in the temperature range of 923 to 1173 K.
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The use of new PHACOMP in understanding the solidification microstructure of nickel base alloy weld metal
TL;DR: In this article, the authors examined the weld metal microstructures of five commercial nickel base alloys (HASTELLOYS* C-4, C-22, and C-276, and INCONELS* 625 and 718) and found that solidification terminates in many of these alloys with the formation of a constituent containing a topologically close-packed (TCP) intermetallic phase.
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Determination of isothermal sections of nickel rich portion of Ni-Cr-Mo system by analytical electron microscopy
TL;DR: In this paper, the Ni-Cr-Mo system was determined by analytical electron microscopy (AEM) consisting of X-ray microanalysis and Convergent Beam Diffraction (CBD).