Analysis of fracture surfaces of reactor pressure-vessel steels

Conference · Fri Jan 01 04:00:00 EST 1982 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:5710186

deHodgins, O C ^[1]; Shriver, B L

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1. Univ. of Virginia, Charlottesville

The fracture surfaces of three A533-B pressure-vessel steels have been analyzed using Auger analysis scanning electron microscopy and x-ray microanalysis. The steels included both weld and plate materials with differing radiation sensitivity. The unirradiated specimens were fractured under different conditions to give both ductile and brittle failure modes. The research showed that the copper and carbon concentrations were higher at the fracture surfaces. Very fine precipitates of molybdenum, phosphorus, and sulfur were observed on ductile fracture surfaces of all materials. However, the amount and type of precipitates varied among materials. Auger analysis and x-ray microanalysis provided consistent results and allowed detection of most of the impurity or alloying elements which have been related to radiation sensitivity of A533-B steels.

• OSTI ID: 5710186
• Report Number(s): CONF-820628-
• Conference Information: Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Journal Volume: 782
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUGER ELECTRON SPECTROSCOPY
CONTAINERS
ELECTRON SPECTROSCOPY
FRACTURE PROPERTIES
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MICROANALYSIS
PRESSURE VESSELS
SEGREGATION
SPECTROSCOPY
STEEL-ASTM-A533
STEELS
SURFACES