Published May 1999 | Version v1
Miscellaneous Metadata-only

Critical stress intensity factor, KIH for an initiation of delayed hydride cracking in Zr-2.5Nb alloy

Creators

  • 1. KAERI, Taejon (Korea, Republic of)

Description

The objective of this study is to determine a controlling factor to KIH for an initiation of Delayed Hydride Cracking (DHC) in Zr-2.5Nb alloy. The fatigue crack of the compact tension specimen (17mm width) charged with 200 ppm H changed from the longitudinal to the circumferential directions. The Zr-2.5Nb specimen with a fatigue crack lying in the longitudinal direction had the lowest KIH of 5.5 MPa√m with the DHC crack growing normal to the tensile load. To the contrary, the Zr-2.5Nb specimen with a fatigue crack lying in the circumferential direction showed the highest KIH of 18 MPa√m with the DHC crack branching into 2 cracks tilting at a 75 degree to the fatigue crack plane. Dependence of KIH for Zr-2.5Nb alloy with the angle of the longitudinal direction and the fatigue crack plane was discussed on the basis of the angle of the crack habit plane 107 and the fatigue crack plane, or the magnitude of basal component on the fatigue crack plane

Part of:
Proceedings of the Korean Nuclear Society spring meeting

Additional details

Publishing Information

Publisher
KNS
Imprint Place
Taejon (Korea, Republic of)
Imprint Title
Proceedings of the Korean Nuclear Society spring meeting
Imprint Pagination
[one CD-ROM]
Journal Page Range
[6 p.]

Conference

Title
1999 spring meeting of the Korean Nuclear Society
Dates
28-29 May 1999
Place
Pohang (Korea, Republic of)

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
33042445
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CRACKING; FATIGUE; HYDRIDES; NIOBIUM ALLOYS; STRESSES; ZIRCONIUM ALLOYS
Descriptors DEC
ALLOYS; CHEMICAL REACTIONS; DECOMPOSITION; HYDROGEN COMPOUNDS; MECHANICAL PROPERTIES; PYROLYSIS; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
9 refs, 6 figs, 1 tab