Present status of vanadium alloys for fusion applications

Muroga, T.; Chen, J. M.; Чернов, В. М.; Kurtz, Richard J.; Flem, Marion Le

doi:10.1016/j.jnucmat.2014.06.025

Cited by 155 publications

(33 citation statements)

References 50 publications

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“…Vanadium alloys are one of the prospective structural materials in fusion reactors [1][2][3][4][5][6][7][8][9][10][11][12][13]. Vanadium has relatively low activation properties [1], high thermal stress factors [2] and relatively good radiation resistance with moderate swelling properties [5,8].…”

Section: Introductionmentioning

confidence: 99%

The Microstructure and strength of a V–5Cr–5Ti alloy processed by high pressure torsion

Zhao

Jóni

Ribárik

et al. 2019

Materials Science and Engineering: A

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The microstructure and the strength of high pressure torsion processed V-5Cr-5Ti alloy are investigated by X-ray line profile analysis and microhardness testing. High pressure torsion has been applied at 4 and 8 GPa with 0.25, 0.5, 1, 2, 4 and 8 rotations. The X-ray beam of the high angular resolution diffractometer, dedicated for line profile analysis, has a footprint of about 200 m1.5 mm on the specimen. The diffraction patterns have been measured in the center, at half radius and close to the edge of the specimens. This technique has provided a large number of data of the microstructure and hardness as a function of strain up to about 300. The dislocation density determined by X-ray line broadening is correlated and discussed in terms of the strength of the alloy using the Taylor equation.

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Section: Introductionmentioning

confidence: 99%

The Microstructure and strength of a V–5Cr–5Ti alloy processed by high pressure torsion

Zhao

Jóni

Ribárik

et al. 2019

Materials Science and Engineering: A

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“…Due to low activation characteristics, desirable high-temperature strength, good resistance to radiation damage and usable fabrication properties, vanadium (V) alloys are attractive candidate structural materials for fusion reactors [1][2][3][4]. Testing in reactors at temperatures higher than 400°C, vanadium alloys displayed significant resistance to radiation damage [5].…”

Section: Introductionmentioning

confidence: 99%

Nanoindentation on V–4Ti alloy irradiated by H and He ions

Yang

Zhang

Meng

et al. 2015

Journal of Nuclear Materials

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“…Recent efforts have made a significant progress in fabrication, joining and coating technology of the alloys [1,2]. Especially the welding technology has advanced largely including gas-tungsten-arc (GTA) welding [3,4], laser welding [5] and electron beam (EB) welding [6].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Precipitation and Mechanical Property Change by Heat Treatments for the Laser Weldments of V-4Cr-4Ti Alloy

Muroga

Heo

Nagasaka

et al. 2015

Plasma and Fusion Research

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Bead-on-plate welds were produced on the 4 mm-thick V-4Cr-4Ti alloy (NIFS-HEAT-2), using a 2.0 kW YAG laser. The post-weld heat treatments (PWHT) were carried out in various conditions. Microstructures, Vickers hardness and Charpy impact properties were obtained for the weld metal after the PWHT. After PWHT for one hour, the hardness increased and after the peak declined with temperature. At 873 K, the hardness increased and after the peak declined with the time of PWHT. Microstructural observation showed that high density of fine precipitates formed homogeneously when the hardness increased, but the precipitate distribution changed into heterogeneous forming islands of developed precipitate aggregates, coincident with decrease in hardness and recovery of impact properties. Optical microscope observations suggested that a cellular structure of precipitate aggregate region was formed by PWHT. Microchemical analysis showed that Ti was enriched in the precipitate aggregate region. Therefore the areal oscillation of Ti concentration with cellular structures formed by melting and resolidification during the welding resulted in the heterogeneous precipitation by the following PWHT. The precipitation in the Ti-rich area purified the matrix of the weld metal and induced the recovery of hardening and impact property degradation. Optimum PWHT conditions were discussed according to the present results.

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Present status of vanadium alloys for fusion applications

Cited by 155 publications

References 50 publications

The Microstructure and strength of a V–5Cr–5Ti alloy processed by high pressure torsion

The Microstructure and strength of a V–5Cr–5Ti alloy processed by high pressure torsion

Nanoindentation on V–4Ti alloy irradiated by H and He ions

Heterogeneous Precipitation and Mechanical Property Change by Heat Treatments for the Laser Weldments of V-4Cr-4Ti Alloy

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