Proton irradiation studies on pure Ti and Ti-6Al-4V

Gupta, Abhijit; Mukherjee, P.; Gayathri, N.; Bhattacharyya, Pranab K.; Bhattacharya, M.; Sarkar, A.; Sen, Swarnendu; Mitra, M.K.

doi:10.1016/j.nimb.2016.09.010

Cited by 14 publications

(4 citation statements)

References 33 publications

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“…The irradiation of nanolayers can also lead to component segregation and local changes in alloy density [6][7][8]. This type of segregation can also occur in steels.…”

Section: Introductionmentioning

confidence: 99%

Effect of 160 MeV Xenon Ion Irradiation on the Tribological Properties and Crystal Structure of 100Cr6 Bearing Steel

Kamiński,

Budzyński,

Surowiec

et al. 2023

Materials

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This is the first study ever to show the impact of high-energy 160 MeV xenon ion irradiation on the properties of 100Cr6 bearing steel. The projected range (Rp) of xenon ions is 8.2 µm. Fluence-dependent variations in the coefficient of friction and wear of the 100Cr6 steel material have been observed. These changes correlate with shifts in the crystal lattice constant and variations in the oxygen, carbon, and iron content in the wear track. Fluence-dependent changes in these parameters have been observed for the first time. Irradiation reduces stresses in the crystal lattice, leading to crystallite size increase. The modifications in the properties of 100Cr6 steel result from radiation-induced defects caused by electronic ion stopping. The degree of these modifications depends on the applied irradiation fluence. Furthermore, the use of a higher irradiation fluence value appears to mitigate the effects produced by a lower fluence.

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“…The irradiation of nanolayers can also lead to component segregation and local changes in alloy density [6][7][8]. This type of segregation can also occur in steels.…”

Section: Introductionmentioning

confidence: 99%

Effect of 160 MeV Xenon Ion Irradiation on the Tribological Properties and Crystal Structure of 100Cr6 Bearing Steel

Kamiński,

Budzyński,

Surowiec

et al. 2023

Materials

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“…At present, most researchers have mainly used transmission electron microscopy, 3D atom probes, and X-ray analysis techniques to study the hydrogen-induced defect behavior of hydrogen atoms in structural materials [16][17][18]. In comparison with these methods, positron annihilation technology is a self-seeking detection technology, which is more sensitive to micro-defects collecting the annihilation information of positrons in structural materials to reflect the structure of defects in structural materials and the distribution of elements [19,20].…”

Section: Introductionmentioning

confidence: 99%

Exploration on the Effect of Pretreatment Conditions on Hydrogen-Induced Defects in Pure Titanium by Positron Annihilation Spectroscopy

Jian

Wang

et al. 2022

Metals

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Electrolytic hydrogen charging experiments on cold-deformed and well-annealed (annealing at 700 °C for 2 h) pure titanium samples were carried out, respectively. Positron annihilation spectroscopy and X-ray diffraction were used to characterize all experimental samples to explore the formation of vacancy defects and the storage form of hydrogen in pure titanium after charging. Results showed that hydrides formed in well-annealed samples after electrolytic hydrogen charging, but a new phase in the cold-deformed samples was not observed. The annealed samples formed vacancy-type defects in the process of electrolytic hydrogen charging, and the excess hydrogen atoms were easily trapped by vacancies to form a hydrogen vacancy complex (HmVn). The defects formed in the cold-deformed hindered the diffusion of hydrogen atoms and inhibited the formation of vacancies. Compared with the well-annealed electrolytic hydrogen charging samples, the S parameters of the deformed electrolytic hydrogen charging samples hardly changed. The coincidence Doppler broadening spectrum results showed that wide peaks related to hydrogen vacancy complexes were found in electrolytic hydrogen charging samples. The formation of hydride in titanium affected the positron annihilation environment in the low-momentum region. The hydride-related peak was observed only in the electrolytic hydrogen-charged samples after being well annealed.

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“…The mechanical behavior of unirradiated Ti6Al4 V alloy was characterized [23] using uniaxial tension and compression as well as simple shear and plane strain tests in three orthogonal material directions revealing tension/compression asymmetry, anisotropic yielding and anisotropic strain hardening, behavior that is crucial in its intended applications. Proton irradiation of pure Ti and Ti6Al4V was conducted in [24] where postirradiation microstructural characterization was performed based on x-ray diffraction. Observed in [24] is that at high dose (∼5 × 10 21 p=m 2 ) the diffraction peaks of Ti6Al4 V became highly asymmetric and attributed to the segregation of the alloying elements.…”

Section: Introductionmentioning

confidence: 99%

“…Proton irradiation of pure Ti and Ti6Al4V was conducted in [24] where postirradiation microstructural characterization was performed based on x-ray diffraction. Observed in [24] is that at high dose (∼5 × 10 21 p=m 2 ) the diffraction peaks of Ti6Al4 V became highly asymmetric and attributed to the segregation of the alloying elements.…”

Section: Introductionmentioning

confidence: 99%

Multi-MW accelerator target material properties under proton irradiation at Brookhaven National Laboratory linear isotope producer

Simos

Ludewig

Kirk

et al. 2018

Phys. Rev. Accel. Beams

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The effects of proton beams irradiating materials considered for targets in high-power accelerator experiments have been studied using the Brookhaven National Laboratory's (BNL) 200 MeV proton linac. A wide array of materials and alloys covering a wide range of the atomic number (Z) are being scoped by the high-power accelerator community prompting the BNL studies to focus on materials representing each distinct range, i.e. low-Z, mid-Z and high-Z. The low range includes materials such as beryllium and graphite, the midrange alloys such as Ti-6Al-4V, gum metal and super-Invar and finally the high-Z range pure tungsten and tantalum. Of interest in assessing proton irradiation effects are (a) changes in physiomechanical properties which are important in maintaining high-power target functionality, (b) identification of possible limits of proton flux or fluence above which certain materials cease to maintain integrity, (c) the role of material operating temperature in inducing or maintaining radiation damage reversal, and (d) phase stability and microstructural changes. The paper presents excerpt results deduced from macroscopic and microscopic post-irradiation evaluation (PIE) following several irradiation campaigns conducted at the BNL 200 MeV linac and specifically at the isotope producer beam-line/target station. The microscopic PIE relied on high energy x-ray diffraction at the BNL NSLS X17B1 and NSLS II XPD beam lines. The studies reveal the dramatic effects of irradiation on phase stability in several of the materials, changes in physical properties and ductility loss as well as thermally induced radiation damage reversal in graphite and alloys such as super-Invar.

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Proton irradiation studies on pure Ti and Ti-6Al-4V

Cited by 14 publications

References 33 publications

Effect of 160 MeV Xenon Ion Irradiation on the Tribological Properties and Crystal Structure of 100Cr6 Bearing Steel

Effect of 160 MeV Xenon Ion Irradiation on the Tribological Properties and Crystal Structure of 100Cr6 Bearing Steel

Exploration on the Effect of Pretreatment Conditions on Hydrogen-Induced Defects in Pure Titanium by Positron Annihilation Spectroscopy

Multi-MW accelerator target material properties under proton irradiation at Brookhaven National Laboratory linear isotope producer

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