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Title: THE CREEP BEHAVIOUR OF THE MAGNESIUM-ZIRCONIUM ALLOY ZA AT 400 AND 450 C IN CARBON DIOXIDE CONTAINING /approximately equals/200 PPM MOISTURE

Abstract

The creep behavior of the magnesium-zirconium alloy ZA was studied in tests of up to 5600 hr duration at 400 deg C and up to 12 600 hr duration at 450 deg C, in an atmosphere of carbon dioxide containing approximately 200 ppm water. The accompanying microstructural changes were observed by optical and electron microscopy. The alloy is stronger at 450 deg C than at 400 deg C and additional strengthening obtains from prestraining at 250 deg C prior to creep-testing. In stress rupture tests at 200 deg C subsequent to creep-testing, the time to rupture and the rupture ductility are lower in specimens previously tested at 450 deg C than in those tested at 400 deg C. The increase in creep strength at 450 deg C, and subsequent loss of ductility, are attributed principally to the precipitation of a zirconium-rich phase, tentatively identified as epsilon - zirconium hydride, which forms both intragranularly (as ribbons and thin hexagonal plates) and as intergranular particles. (auth)

Authors:
;
Publication Date:
Research Org.:
International Research and Development Co. Ltd., Newcastle-upon- Tyne, Eng.
OSTI Identifier:
4687408
NSA Number:
NSA-17-027849
Resource Type:
Journal Article
Journal Name:
Journal of Nuclear Materials (Netherlands)
Additional Journal Information:
Journal Volume: Vol: 8; Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
METALS, CERAMICS, AND OTHER MATERIALS; CARBON DIOXIDE; CREEP; DEFORMATION; DUCTILITY; ELECTRON MICROSCOPY; FAILURES; HIGH TEMPERATURE; HUMIDITY; LATTICES; MAGNESIUM ALLOYS; MICROSCOPY; OPTICS; PRECIPITATION; TEMPERATURE; TENSILE PROPERTIES; TESTING; ZIRCONIUM ALLOYS; ZIRCONIUM HYDRIDES

Citation Formats

Kent, R.P., and Wells, T.C. THE CREEP BEHAVIOUR OF THE MAGNESIUM-ZIRCONIUM ALLOY ZA AT 400 AND 450 C IN CARBON DIOXIDE CONTAINING /approximately equals/200 PPM MOISTURE. Country unknown/Code not available: N. p., 1963. Web. doi:10.1016/0022-3115(63)90035-7.
Kent, R.P., & Wells, T.C. THE CREEP BEHAVIOUR OF THE MAGNESIUM-ZIRCONIUM ALLOY ZA AT 400 AND 450 C IN CARBON DIOXIDE CONTAINING /approximately equals/200 PPM MOISTURE. Country unknown/Code not available. doi:10.1016/0022-3115(63)90035-7.
Kent, R.P., and Wells, T.C. Fri . "THE CREEP BEHAVIOUR OF THE MAGNESIUM-ZIRCONIUM ALLOY ZA AT 400 AND 450 C IN CARBON DIOXIDE CONTAINING /approximately equals/200 PPM MOISTURE". Country unknown/Code not available. doi:10.1016/0022-3115(63)90035-7.
@article{osti_4687408,
title = {THE CREEP BEHAVIOUR OF THE MAGNESIUM-ZIRCONIUM ALLOY ZA AT 400 AND 450 C IN CARBON DIOXIDE CONTAINING /approximately equals/200 PPM MOISTURE},
author = {Kent, R.P. and Wells, T.C.},
abstractNote = {The creep behavior of the magnesium-zirconium alloy ZA was studied in tests of up to 5600 hr duration at 400 deg C and up to 12 600 hr duration at 450 deg C, in an atmosphere of carbon dioxide containing approximately 200 ppm water. The accompanying microstructural changes were observed by optical and electron microscopy. The alloy is stronger at 450 deg C than at 400 deg C and additional strengthening obtains from prestraining at 250 deg C prior to creep-testing. In stress rupture tests at 200 deg C subsequent to creep-testing, the time to rupture and the rupture ductility are lower in specimens previously tested at 450 deg C than in those tested at 400 deg C. The increase in creep strength at 450 deg C, and subsequent loss of ductility, are attributed principally to the precipitation of a zirconium-rich phase, tentatively identified as epsilon - zirconium hydride, which forms both intragranularly (as ribbons and thin hexagonal plates) and as intergranular particles. (auth)},
doi = {10.1016/0022-3115(63)90035-7},
journal = {Journal of Nuclear Materials (Netherlands)},
number = ,
volume = Vol: 8,
place = {Country unknown/Code not available},
year = {1963},
month = {3}
}