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Title: On the origin and behavior of irradiation-induced c-component dislocation loops in magnesium

Authors:
ORCiD logo; ; ; ; ; ; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1398629
Grant/Contract Number:
00042959-00032; NE0000538
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 131; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-07 09:19:30; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Xu, Weizong, Zhang, Yongfeng, Cheng, Guangming, Mathaudhu, Suveen N., Scattergood, Ronald O., Koch, Carl C., Lavernia, Enrique J., and Zhu, Yuntian. On the origin and behavior of irradiation-induced c-component dislocation loops in magnesium. United States: N. p., 2017. Web. doi:10.1016/j.actamat.2017.04.015.
Xu, Weizong, Zhang, Yongfeng, Cheng, Guangming, Mathaudhu, Suveen N., Scattergood, Ronald O., Koch, Carl C., Lavernia, Enrique J., & Zhu, Yuntian. On the origin and behavior of irradiation-induced c-component dislocation loops in magnesium. United States. doi:10.1016/j.actamat.2017.04.015.
Xu, Weizong, Zhang, Yongfeng, Cheng, Guangming, Mathaudhu, Suveen N., Scattergood, Ronald O., Koch, Carl C., Lavernia, Enrique J., and Zhu, Yuntian. Thu . "On the origin and behavior of irradiation-induced c-component dislocation loops in magnesium". United States. doi:10.1016/j.actamat.2017.04.015.
@article{osti_1398629,
title = {On the origin and behavior of irradiation-induced c-component dislocation loops in magnesium},
author = {Xu, Weizong and Zhang, Yongfeng and Cheng, Guangming and Mathaudhu, Suveen N. and Scattergood, Ronald O. and Koch, Carl C. and Lavernia, Enrique J. and Zhu, Yuntian},
abstractNote = {},
doi = {10.1016/j.actamat.2017.04.015},
journal = {Acta Materialia},
number = C,
volume = 131,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.actamat.2017.04.015

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  • Magnesium single crystals were irradiated to 2.1 x 10/sup 21/ neutrons (n)/cm/sup 2/ (E > 0.1 MeV) near 450/sup 0/K, one set of specimens being under a compressive stress of 80 MPa applied in the c-direction. A transmission electron microscopy (TEM) investigation of the crystals irradiated under load showed that the neutron damage consisted of dislocation loops. Under in situ electron irradiation in the TEM at 200 kV, some of these loops were observed to shrink. It was deduced that the shrinking loops were of the vacancy type, which is consistent with theoretical predictions of the influence of an externalmore » compressive stress on dislocation loop formation during irradiation.« less
  • Dislocation loops of Burgers vectors (a/2) <011> form in potassium chloride during examination at temperatures of --110 to 20 deg C in a 75-kV transmission electron microscope. In addition to these loops, dislocation loops whose character is not known well yet and dislocation loops of a Burgers vector of the type aSTAOO1! also form at a temperature higher than about --15 and --5 deg C, respectively. The third type of loops is transformed into cracks when they have developed. (auth)
  • The effect of irradiation temperature on irradiation-induced dislocation loops in copper has been studied by x-ray diffuse scattering. Dislocation loop size distributions and total defect concentrations were obtained for irradiations in the temperature range 316--483 degreeK for neutron doses in the range (1--10) x 10/sup 18/ n/cm/sup 2/. The average loop sizes were found to increase with increasing irradiation temperature and increasing neutron dose. The number of point defects stored in the loop distributions tended to saturate at the higher doses and were found to decrease with increasing irradiation temperature. Ambient-temperature measurements made on 4 degreeK neutron- and electron-irradiated coppermore » indicated the dislocation loops formed during the anneal to room temperature were smaller than those produced by ambient-temperature reactor irradiations.« less