Grain growth inhibited during grain size-sensitive creep in polycrystalline ice: an energy dissipation-rate perspective
Grain growth inhibited during grain size-sensitive creep in polycrystalline ice: an energy dissipation-rate perspective
复制标题
多晶冰中晶粒尺寸敏感的蠕变过程中晶粒生长受到抑制:能量耗散率的观点
DOI:
10.1007/s00269-022-01202-9
复制
发表时间:
2022
影响因子:
1.4
通讯作者:
Cooper, Reid F.
中科院分区:
文献类型:
--
作者:
Caswell, Tess E.;Cooper, Reid F.
Experiments in which two identical polycrystalline ice Ih specimens are simultaneously subjected to the same time–temperature history while one of the specimens is actively deformed via grain size-sensitive (GSS) creep demonstrate distinctly different microstructural evolution: for particular ranges of starting grain size and differential stress, grains do not grow in the deforming specimen. Ice Ih specimens having initial, uniform grain sizes in the ranged= 6–63 μm were tested in pairs that were subjected to identical time–temperature conditions (durationst= 4–12 days;T= 240 K) but of which only one was subjected to differential stress (σ1= 0.25–1.85 MPa;σ3= 0). Comparing specimens within a pair, for those with coarser initial grain size, the deformed specimens exhibit suppressed or no grain growth. Our results are interpreted from the perspective of nonequilibrium thermodynamics, specifically comparing the energy dissipation rates associated with both grain growth and plastic flow: if the rate of energy dissipation associated with flow exceeds that of grain growth, the grains will not grow. An examination of the limited database on GSS flow and grain growth in silicates conforms to our analysis. The results are applied to the question of the mechanical evolution of terrestrial glaciers and to the ice-rich shells of the outer satellites.
登录
查看更多内容
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
R. Clark;F. Fanale;A. Zent
通讯作者:
A. Zent
影响因子:
4.8
作者:
Barr, AC;Pappalardo, RT
通讯作者:
Pappalardo, RT
影响因子:
2.5
作者:
J. Newman;V. Chatzaras;B. Tikoff;J. Wijbrans;W. Lamb;M. Drury
通讯作者:
M. Drury
影响因子:
1.6
作者:
K. Bennett;H. Wenk;W. Durham;L. Stern;S. Kirby
通讯作者:
S. Kirby
影响因子:
--
作者:
G. Deblonde;W. Peltier
通讯作者:
W. Peltier