Low cycle fatigue behavior of Zircaloy-4 at elevated temperature

被引：0
|
作者：
Fan, XH [1 ]
Cai, LX [1 ]
Li, C [1 ]
机构：
[1] SW Jiaotong Univ, Dept Appl Mech & Engn, Chengdu 610031, Peoples R China
来源：
STRUCTURAL INTEGRITY AND MATERIALS AGING: FRACTURE MECHANICS AND APPLICATIONS | 2003年
关键词：
low cycle fatigue; Zircaloy-4; life estimation; elevated temperature;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of tests on bugle-flat specimens with 1similar to2 mm thickness are carried out to investigate the LCF (Low Cycle Fatigue) behavior of Zircaloy-4 at room and 400degreesC elevated temperature. M-C (Manson-Coffin) life estimation models and R-O (Ramberg-Osgood) monotonic constitutive models at room and 400degreesC are given, respectively. A systematical investigation on the influences of the elevated temperature on cyclic properties of Zircaloy-4 is performed by three temperature factors defined in this paper. Based on the assumption of a linearity relationship between the temperature factor of life and strain amplitude, a simplified M-C model for predicting the fatigue life of Zircaloy-4 at elevated temperature is presented. In addition, microcosmic features of fatigue fracture surfaces of Zircaloy-4 specimens are discussed.
引用
收藏
页码：189 / 194
页数：6
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