High-strength, creep-resistant Excel pressure tubes. [Zr-3. 5Sn-0. 8Mo-0. 8Nb]

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

OSTI ID:6460714

Cheadle, B A; Holt, R A; Fidleris, V; Causey, A R; Urbanic, V F

The alloy Excel (Zr-3.5Sn-0.8Mo-0.8Nb) is stronger and more creep resistant than Zr-2.5Nb and is being developed as a pressure tube material. Tubes have been fabricated that are as strong as the Zr-2.5Nb tubes but they have more equiaxed/alpha/-grains with much lower dislocation densities. The tubes corrode faster than the Zr-2.5Nb tubes and will require 0.1mm more corrosion allowance on the 4.1-mm thick walls. However, their in-service axial elongation and diametral expansion due to irradiation creep and growth will be 70 percent less than the Zr-2.5Nb tubes. 16 refs.

• Research Organization: AECL, Chalk River, Ont, Can
• OSTI ID: 6460714
• Report Number(s): CONF-800834-
• Conference Information: Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210400* -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CANDU TYPE REACTORS
CHEMICAL REACTIONS
CORROSION
CREEP
CRYSTAL STRUCTURE
FABRICATION
HEAVY WATER MODERATED REACTORS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
PRESSURE TUBE REACTORS
PRESSURE TUBES
REACTORS
TENSILE PROPERTIES
TEXTURE
THERMAL REACTORS
TIN ALLOYS
TUBES
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS