High Temperature Oxidation of the Hot Rolled ZrNbMoGe Alloy for Fuel Cladding Material of Pressurized Water Reactor

Bandriyana,; Rivai, A.K.; Prajitno, J.H.; Dimyati, A.

doi:10.4028/www.scientific.net/AMR.1123.356

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HomeAdvanced Materials ResearchAdvanced Materials Science and Technology IIHigh Temperature Oxidation of the Hot Rolled...

High Temperature Oxidation of the Hot Rolled ZrNbMoGe Alloy for Fuel Cladding Material of Pressurized Water Reactor

Abstract:

The Zr-2.5Nb-0.5Mo-0.1Ge alloy were developed for application as fuel cladding material in an advanced Pressurized Water Reactor (PWR) with higher burn-up at higher service temperature. Oxidation behaviour of the alloy at high temperature similar to condition related to the operating with Lost of Cooling Accident (LOCA) conditions was investigated. The sample ingot was synthesized in an arc melting furnace followed by hot rolling at 850 °C down to 3 mm of thickness. Each one alloy ingot and one alloy sheet were subjected to the high temperature oxidation test in the Magnetic Suspension Balance (MSB) at 500 °C. Light optical microscope (LIOM) and Scanning Electron Microscope (SEM) equipped with X-ray Diffraction Spectroscopy (EDS) were used to characterize the microstructure of the oxide layer. The Vickers hardness tester was used to evaluate the hardness of the alloy matrix before and after oxidation processes. The results concluded that both samples showed oxidation rate characteristic which follows the parabolic phenomenon. However the hot rolled sample had lower rate. The oxide layer was indicated as ZrO₂_.

Info:

Periodical:

Advanced Materials Research (Volume 1123)

Main Theme:

Advanced Materials Science and Technology II

Edited by:

Risa Suryana, Kuwat Triyana, Khairurrijal, Heru Susanto and Sutikno

Pages:

356-359

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1123.356

Citation:

Bandriyana et al., "High Temperature Oxidation of the Hot Rolled ZrNbMoGe Alloy for Fuel Cladding Material of Pressurized Water Reactor", Advanced Materials Research, Vol. 1123, pp. 356-359, 2015

Online since:

August 2015

Authors:

Bandriyana *, A.K. Rivai, J.H. Prajitno, A. Dimyati

Keywords:

Cladding, Hot Rolling, Oxidation, PWR, Zircalloy

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References

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DOI: https://doi.org/10.4028/www.scientific.net/amr.896.617

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Paper TitlePages

Improved High Temperature Tensile Properties of Ti-6Al-4V Alloy by Plasma Sprayed Coating

Authors: Cui Li, Wei Qi, Kutsuna Muneharu

Abstract: A zircon coating was applied on the surface of Ti-6Al-4V alloy by plasma spray and its effect on the high temperature tensile properties of the alloy as well as the oxidation behavior of the alloy were studied. Tensile tests were conducted at 850°C with different strain rates of 10-4s-1,10-3s- 1, 10-2s-1 and 10-1s-1. The results show that the elongation of the coated specimens is higher than that of the uncoated ones, while the ultimate tensile strength of the alloy is not changed. An oxide film had formed on the surface of uncoated Ti-6Al-4V alloy, however no such oxide film was found on the coated alloy at the early of stage. The coating can prevent oxygen penetration into the substrate thus prevent embrittlement of the subsurface zone. The ductility could be improved by means of the zircon coating. The optical micrographs of the specimens show little change in microstructures of the coated and uncoated specimens. Zircon coating has no effect on the microstructure of the substrate alloy.

547

Rheocasting of Al-Cu Alloy A201 with Different Silver Contents

Authors: E.P. Masuku, Gonasagren Govender, L. Ivanchev, Heinrich Möller

Abstract: Rheocasting of alloys A206 and A201 was investigated in this study. Conical bars with different silver contents were produced using CSIR rheoprocess technology, together with high pressure die casting. The results showed that addition of Ag to alloy A206 increased the mechanical properties of the alloy. However, the addition of Ag also resulted in Cu-rich phases to precipitate at the grain boundaries of the as-cast material. The solution treatment used in this study was unable to dissolve all of this phase, especially in the 1.12%Ag-containing alloy. This resulted in slightly decreased mechanical properties compared to the 0.63%Ag-containing alloy. The T6 mechanical properties (strength and elongation) obtained in this study for rheocast A206 and A201 are better than those reported for permanent mould castings of alloy A206 and A201.

151

Influence of Aging on Microstructure and Mechanical Properties of Wrought Magnesium Alloys

Authors: Yong Xue, Zhi Min Zhang, Li Hui Lang, Li Li

Abstract: In the present paper a research has been made on the effect of aging on the microstructure and mechanical properties of AZ80 and ZK60 wrought magnesium alloys by virtue of optical microscope, electronic scanning microscope and mechanical testers. The research indicates that both the tensile strength and elongation of AZ80 alloy first increase and then decrease as the aging temperature rises, and that, at 140°C-170°C aging temperature, the alloy has good performances in both tensile strength and elongation, they both reaching their peak values at 170°C aging temperature. It has been proved in these researches that while the hardness of ZK60 alloy first increase and then decrease as the aging temperature rises and that the hardness reaches its peak value at 170°C aging temperature, the impact of toughness of the alloy is just the opposite. ZK60 alloy has good performances in both impact toughness and other properties at 140-200°C aging temperature. Constrastive researches have shown that, at the same aging temperature, ZK60 alloy has a better performance than AZ80 alloy.

560

Comparison of Different Content of Cd and Sb Element on the Microstructure, Mechanical Properties of As-Cast AZ31 Magnesium Alloy

Authors: Xiao Ping Luo, Lan Ting Xia, Ming Gang Zhang

Abstract: The effect of Cd and Sb addition on the microstructural and mechanical properties of as-cast AZ31 alloys was investigated and compared. The results indicate that the difference of Sb and Cd in the microstructure and mechanical properties of as-cast AZ31 magnesium alloy is significant. Addition of 0.15%Sb (mass fraction) to AZ31 alloy can refine the matrix and β-Mg₁₇Al₁₂ phase but not form a new phase Mg₃Sb₂. Oppositely, by addition of 0.3-0.7% Cd to AZ31 alloy, Cd was dissolved into the AZ31 alloy, the phase composition did not change but was refined also. Accordingly, the Cd-refined AZ31 alloy exhibits higher tensile and impact toughness and Brinell hardness properties than the Sb- refined one. The difference of Sb and Cd in the mechanical properties is possibly related to the solid solution of Cd into the matrix and formation of Mg₃Sb₂ which has the same close-packed hexagonal structure as α-Mg.

197

The Mechanical Properties of Platinum-Iridium Alloy Coating

Authors: Hsi Hsin Chien, Kung Jeng Ma, Chien Hung Kuo

Abstract: Glass molding process provides a great potential for the production of precise glass optical components at low cost. The platinum-iridium (Pt-Ir) alloys are widely used as the protective coatings to extend the service life of the mold in glass molding process. This study concentrated on the microstructure and mechanical properties of sputtered Pt-Ir alloy films. The obvious grain growth was observed in the Pt-Ir alloy films at sputtering temperature of 700. The hardness and elastic modulus of Pt-Ir alloy film decreased with the increase in Pt content.

533