Dislocation loops at twin boundaries in an ion-irradiated austenitic alloy

Lane, P.L.; Goodhew, P.J.

doi:10.1080/01418618208236915

Cited by 11 publications

(3 citation statements)

References 22 publications

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“…The microstructure after irradiation up to 10.2 dpa was the subject of previous studies [39,40,44]. The irradiated microstructure consisted of Frank dislocation loops and fine-scale precipitates typical of neutron irradiations at the temperature investigated [58][59][60][61]. To summarize, the loop size increased while the density decreased with increasing dose [39].…”

Section: Dislocations and Frank Loopsmentioning

confidence: 90%

Defect sink characteristics of specific grain boundary types in 304 stainless steels under high dose neutron environments

et al. 2015

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Radiation induced segregation (RIS) is a well-studied phenomena which occurs in many structurally relevant nuclear materials including austenitic stainless steels. RIS occurs due to solute atoms preferentially coupling with mobile point defect fluxes that migrate and interact with defect sinks. Here, a 304 stainless steel was neutron irradiated up to 47.1 dpa at 320°C. Investigations into the RIS response at specific grain boundary types were utilized to determine the sink characteristics of different boundary types as a function of irradiation dose. A rate theory model built on the foundation of the modified inverse Kirkendall (MIK) model is proposed and benchmarked to the experimental results. This model, termed the GiMIK model, includes alterations in the boundary conditions based on grain boundary structure and expressions for interstitial binding. This investigation, through experiment and modeling, found specific grain boundary structures exhibit unique defect sink characteristics depending on their local structure. Such interactions were found to be consistent across all doses investigated and to have larger global implications, including precipitation of Ni-Si clusters near different grain boundary types.

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Section: Dislocations and Frank Loopsmentioning

confidence: 90%

Defect sink characteristics of specific grain boundary types in 304 stainless steels under high dose neutron environments

et al. 2015

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“…It has been repoi ted that defects introduced in austenitic steels by high-energy particle irradiation are Frank loops of interstitial type lying on a { 1 1 l } plane (Holmes, R )bbins, Brimhall and Mastel 1968, Lane andGoodhew 1982, Garner andGelles 1988). As seen in fig.…”

Section: Dislocation Loops In An As-irradiated Specimenmentioning

confidence: 98%

“…For extrinsic Frank loops, which have two layers of stacking faults, it has been suggested that unfaulting may occur by the motion of two Shockley partial dislocations (Barnes 1961, Nabarro 1967, Hirth and Lothe 1968, Lane and Goodhew 1982, Jitsukawa, Katano and Shiraishi 1984. The dislocation reaction involved in conversion from the Frank loop to a perfect loop is given by a a --a 3 6 6 2 -[ i i i l +~ [mi+-[1211+-[iio].…”

mentioning

confidence: 99%

In situdeformation and unfaulting of interstitial loops in proton-irradiated steels

Suzuki

Sato

Mori

et al. 1992

Philosophical Magazine A

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Electron microscopical investigations of ion-implanted and fatigued nickel

Rauschenbach

Blochwítz

1986

phys. stat. sol. (a)

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The microstructure of nickel after boron and nitrogen ion implantation and fatigue is investigated by electron microscopy. Nickel is implanted with ions at energies from 30 to 60 keV and with doses from 1 × 1016 to 1 × 1018 ions/cm2 at room temperature and the fatigue behaviour was studied in push‐pull tests. The microstructure of the near surface region is characterized by a very low dislocation density and of deeper region by a high density of vacancy loops. The formation of bundle dislocation structure (channels) and the persistent slip bands (PSB's) during fatigue of implanted specimens is discussed.

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Dislocation loops at twin boundaries in an ion-irradiated austenitic alloy

Cited by 11 publications

References 22 publications

Defect sink characteristics of specific grain boundary types in 304 stainless steels under high dose neutron environments

Defect sink characteristics of specific grain boundary types in 304 stainless steels under high dose neutron environments

In situdeformation and unfaulting of interstitial loops in proton-irradiated steels

Electron microscopical investigations of ion-implanted and fatigued nickel

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