Creep cavitation evolution in polycrystalline copper under conditions of stress relaxation
Creep cavitation evolution in polycrystalline copper under conditions of stress relaxation
复制标题
应力松弛条件下多晶铜的蠕变空化演化
DOI:
10.1016/j.msea.2023.144784
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Shang H
中科院分区:
文献类型:
--
作者:
Shang H
Creep in metals and alloys has been observed and studied extensively over the past century. Most studies are based on constant load or less frequently on constant stress conditions. Under certain stress regimes during the period of service, such as creep-fatigue (cyclic), and under displacement-controlled loading the stress can relax. This paper uses novel millimetre length-scale beam bend geometry test specimens with constant displacement to simulate stress relaxation and explore cavity nucleation and early-stage growth/closure in a model polycrystalline material, namely oxygen-free high-conductivity copper. The role of changing grain size over the range 43 μm–2350 μm has been explored. Power-law creep theoretical modelling and finite element analyses have been adopted to predict creep relaxation and explain cavity nucleation and early-stage growth/closure for the test conditions. The results are compared with the experimental observations. The overall experimental and modelling outcomes are considered with respect to the underlying creep damage mechanism.
登录
查看更多内容
DOI:
10.1179/030634571790439757
发表时间:
1971-01
期刊:
Metal Science Journal
影响因子:
--
作者:
W. Beeré;G. W. Greenwood
通讯作者:
W. Beeré;G. W. Greenwood
影响因子:
1.8
作者:
R. Browne;P. Flewitt;Deryle W. Lonsdale;M. Shammas;J. Sao
通讯作者:
J. Sao
影响因子:
64.8
作者:
A. Gittins
通讯作者:
A. Gittins
影响因子:
1.9
作者:
M. Mruzik;K. C. Russell
通讯作者:
K. C. Russell
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
H. Riedel
通讯作者:
H. Riedel