Plane-stress yield loci for Zircaloy-4 tubing, estimated from Knoop hardness (LWBR Development Program)

Technical Report · Sat May 01 04:00:00 EDT 1971

OSTI ID:6747257

Goldberg, S J; Busby, C C

The plane-stress yield loci of five Zircaloy-4 tubing lots, varying in both texture and heat-treatment condition, were determined from Knoop microhardness measurements made in the two principal directions of each of the three orthogonal surfaces. The Knoop data were normalized to two differently determined theoretical first-quadrant loci (one based on the pressure-burst yield stress, and the other based on the approximation P = 1.7R, where R and P are the longitudinal and transverse contractile strain ratios). For these materials in which R varied from 0.76 to 2.8, it was concluded that the Knoop hardness flow surface for tubing of comparable heat-treatment condition was sensitive to a change in texture (increase in R value) and indicated the expected texture hardening under combined tension or compression loading. (NSA 25: 40017)

• Research Organization: Bettis Atomic Power Lab., Pittsburgh, PA (USA)
• DOE Contract Number: AT(11-1)-GEN-14
• OSTI ID: 6747257
• Report Number(s): WAPD-TM-975
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
ALLOYS
BREEDER REACTORS
FUEL CANS
LWBR TYPE REACTORS
MECHANICAL PROPERTIES
REACTORS
STRESSES
THERMAL REACTORS
TIN ALLOYS
WATER COOLED REACTORS
WATER MODERATED REACTORS
YIELD STRENGTH
ZIRCALOY
ZIRCALOY 4
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS