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A study of stress reorientation of hydrides in zircaloy

Abstract

Under the conditions of circumferential tensile stress from 70 to 180 MPa for Zircaloy tubes or the tensile stress from 55 to 180 MPa for Zircaloy-4 plates and temperature cycling between 150 and 400 degree C, the effects of stress and the number of temperature cycling on hydride reorientation in Zircaloy-4 tubes and plates and Zircaloy-2 tubes containing about 220 {mu}g/g hydrogen have been investigated. With the increase of stress and/or the number of temperature cycling, the level of hydride reorientation increases. When hydride reorientation takes place, there is a threshold stress concerned with the number of temperature cycling. Below the threshold stress, hydride reorientation is not obvious. When applied stress is higher than the threshold stress, the level of hydride reorientation increases with the increase of stress and the number of temperature cycling. Hydride reorientation in Zircaloy-4 tubes develops gradually from the outer surface to inner surface. It might be related to the difference of texture between outer surface and inner surface. The threshold stress is affected by both the texture and the value of B. So controlling texture could still restrict hydride reorientation under tensile stress.
Authors:
Yourong, Jiang; Bangxin, Zhou [1] 
  1. Nuclear Power Inst. of China, Chengdu, SC (China)
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
CNIC-00884; SINRE-0045.
Reference Number:
SCA: 360103; PA: AIX-26:049475; EDB-95:083995; ERA-20:018732; NTS-96:001136; SN: 95001405621
Resource Relation:
Other Information: PBD: Oct 1994
Subject:
36 MATERIALS SCIENCE; HYDRIDES; GRAIN ORIENTATION; STRESS ANALYSIS; ZIRCALOY; EXPERIMENTAL DATA; PLATES; ROLLING; SURFACE TENSION; TEMPERATURE DEPENDENCE; TEXTURE; TUBES
OSTI ID:
58820
Research Organizations:
China Nuclear Information Centre, Beijing, BJ (China)
Country of Origin:
China
Language:
English
Other Identifying Numbers:
Other: ON: DE95629289; ISBN 7-5022-1243-4; TRN: CN9500915049475
Availability:
INIS; OSTI as DE95629289
Submitting Site:
INIS
Size:
15 p.
Announcement Date:
Jun 30, 1995

Citation Formats

Yourong, Jiang, and Bangxin, Zhou. A study of stress reorientation of hydrides in zircaloy. China: N. p., 1994. Web.
Yourong, Jiang, & Bangxin, Zhou. A study of stress reorientation of hydrides in zircaloy. China.
Yourong, Jiang, and Bangxin, Zhou. 1994. "A study of stress reorientation of hydrides in zircaloy." China.
@misc{etde_58820,
title = {A study of stress reorientation of hydrides in zircaloy}
author = {Yourong, Jiang, and Bangxin, Zhou}
abstractNote = {Under the conditions of circumferential tensile stress from 70 to 180 MPa for Zircaloy tubes or the tensile stress from 55 to 180 MPa for Zircaloy-4 plates and temperature cycling between 150 and 400 degree C, the effects of stress and the number of temperature cycling on hydride reorientation in Zircaloy-4 tubes and plates and Zircaloy-2 tubes containing about 220 {mu}g/g hydrogen have been investigated. With the increase of stress and/or the number of temperature cycling, the level of hydride reorientation increases. When hydride reorientation takes place, there is a threshold stress concerned with the number of temperature cycling. Below the threshold stress, hydride reorientation is not obvious. When applied stress is higher than the threshold stress, the level of hydride reorientation increases with the increase of stress and the number of temperature cycling. Hydride reorientation in Zircaloy-4 tubes develops gradually from the outer surface to inner surface. It might be related to the difference of texture between outer surface and inner surface. The threshold stress is affected by both the texture and the value of B. So controlling texture could still restrict hydride reorientation under tensile stress.}
place = {China}
year = {1994}
month = {Oct}
}