from 28 June 2015 to 3 July 2015 (Africa/Johannesburg)
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016
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Microstructural analysis of proton irradiated zircaloy-4

Presented by Mr. Tshepo MAHAFA on 30 Jun 2015 from 16:10 to 18:00
Type: Poster Presentation
Session: Poster1
Track: Track A - Division for Physics of Condensed Matter and Materials
Board #: A.304

Abstract

To help understand the microstructural evolution of reactor materials under neutron irradiation, charged particle irradiation of materials in an accelerator environment are carried out. Charged particles have been shown to produce damage effects equivalent to those of neutrons in materials. In this experiment, zircaloy-4 in tubular form was exposed to a pulsed proton beam in a radio frequency quadrupole (RFQ) accelerator at the South African Nuclear Energy Corporation (Necsa). The sample was irradiated to a total dose of 1.19x10E19 ions /cm2. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray diffraction (XRD) were used to characterize the induced changes in the materials microstructure. With XRD, a reversal of the residual stress and grain growth were observed after proton irradiation. SEM and TEM revealed crack formation in the microstructure plus grain growth as revealed by XRD.

Award

Yes

Level

MSc

Supervisor

Emanuella Carleschi, ecarleschi@uj.ac.za, University of Johannesburg

Paper

Yes

Permission

Yes

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