Journal ArticleDOI
Proton-induced grain boundary segregation in stainless steel
D. L. Damcott,D. L. Damcott,J. M. Cookson,R. D. Carter,J. R. Martin,Michael Atzmon,Gary S. Was +6 more
TLDR
In this article, a technique was developed which addressed the problem of irradiation assisted stress corrosion cracking of stainless steels in light water reactors using high energy protons to induce grain boundary segregation.Abstract:
A technique is developed which addresses the problem of irradiation assisted stress corrosion cracking of stainless steels in light water reactors using high energy protons to induce grain boundary segregation. These results represent the first grain boundary segregation measurements in bulk produced by proton irradiation of stainless steel. The technique allows the study of grain boundary composition with negligible sample activation, short irradiation time, rapid sample turnaround and at minimal cost. Scanning Auger electron microscopy is used to obtain grain boundary composition measurements of irradiated and unirradiated samples of ultra high purity (UHP) type 304L stainless steel and UHP type 304L steels with the additions of phosphorus (UHP + P) and sulphur (UHP + S). Results show that irradiation of all three alloys causes significant Ni segregation to the grain boundary and Cr and Fe away from it. Irradiation of the UHP + P alloy also results in segregation of P at the grain boundary from...read more
Citations
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Journal ArticleDOI
Isolating the effect of radiation-induced segregation in irradiation-assisted stress corrosion cracking of austenitic stainless steels
TL;DR: In this paper, post-irradiation annealing was used to identify the role of radiation-induced segregation (RIS) in irradiation-assisted stress corrosion cracking (IASCC) by preferentially removing dislocation loop damage from protonirradiated austenitic stainless steels while leaving the RIS of major and minor alloying elements largely unchanged.
Journal ArticleDOI
Effects of irradiation on intergranular stress corrosion cracking
Gary S. Was,Stephen M. Bruemmer +1 more
TL;DR: In this paper, the effect of radiation-induced segregation (RIS) on IGSCC was investigated and strong correlations between IASCC and irradiated yield strength were found.
Journal ArticleDOI
Effect of proton and Ne irradiation on the microstructure of Zircaloy 4
X. T. Zu,Kai Sun,Michael Atzmon,Lumin Wang,L. P. You,F. R. Wan,J. T. Busby,Gary S. Was,R. B. Adamson +8 more
TL;DR: Proton irradiation at temperatures of 310 and 350°C has been explored as a method of studying radiation effects in Zircaloy 4 under power-reactor conditions as mentioned in this paper The dislocation-loop and hardness evolution are similar to those observed under neutron irradiation Amorphization and Fe loss at Zr(Cr,Fe)2 precipitates are observed Energy-filtered images indicate Fe accumulation in the matrix near the precipitate.
Journal ArticleDOI
Microchemistry and microstructure of proton-irradiated austenitic alloys: toward an understanding of irradiation effects in LWR core components
Gary S. Was,Todd R. Allen,J. T. Busby,Jian Gan,D. L. Damcott,D. Carter,Michael Atzmon,Edward A. Kenik +7 more
TL;DR: In this article, the effect of radiation induced segregation (RIS) and microstructure development on grain boundary composition and micro-structural development has been investigated, and it was found that RIS is related to the development of dislocation and void microstructures.
Journal ArticleDOI
Intercomparison of microchemical evolution under various types of particle irradiation
Gary S. Was,Todd R. Allen +1 more
TL;DR: The problem of irradiation-assisted stress corrosion cracking (L4SCC) in reactor cores is currently being addressed using different types of particle irradiation (electrons, heavy and light ions) to study the effect of neutron damage.
References
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Book
The stopping and range of ions in solids
J.P. Biersack,James F. Ziegler +1 more
TL;DR: A review of existing widely-cited tables of ion stopping and ranges can be found in this paper, where a brief exposition of what can be determined by modern calculations is given.
Journal ArticleDOI
Grain boundary segregation of phosphorus and
TL;DR: In this paper, a study of grain boundary segregation of phosphorus and sulfur in types 304L and 316L stainless steel was conducted, and it was found that phosphorus was usually precipitated as chromium-rich sulfides and the amount of elemental segregation was low.
Journal ArticleDOI
An Auger Electron Spectroscopic Study of Phosphorus Segregation in the Grain Boundaries of Nickel Base Alloy 600
TL;DR: In this paper, the grain boundary composition of nickel base alloy 600 has been studied by means of Auger electron spectroscopy, and it was shown that the segregation of P was of the equilibrium (McLean) type, whereas Si did not segregate appreciably to the grain boundaries.
Journal ArticleDOI
Solute segregation along non-migrated and migrated grain boundaries during electron irradiation in austenitic stainless steels
Kiyotomo Nakata,Isao Masaoka +1 more
TL;DR: In this paper, the same authors studied the distribution and precipitation in the vicinity of the grain boundary in Type 316 steels during electron irradiation up to about 50 dpa at temperatures from room temperature to 873 K.
Journal ArticleDOI
Effect of irradiation on phosphorus segregation
TL;DR: In this article, it was suggested that the lack of segregation in the ferritic alloys was due to impurity interaction in the bcc iron structure while a strong interaction was suggested for the fcc IR structure.