Low-temperature rheology of calcite
Low-temperature rheology of calcite
复制标题
方解石的低温流变学
DOI：
10.1093/gji/ggz577
复制
发表时间：
2019
影响因子：
2.8
通讯作者：
Skemer, Philip
中科院分区：
文献类型：
--
作者：
Sly, Michael K.;Thind, Arashdeep S.;Mishra, Rohan;Flores, Katharine M.;Skemer, Philip
Low-temperature plastic rheology of calcite plays a significant role in the dynamics of Earth's crust. However, it is technically challenging to study plastic rheology at low temperatures because of the high confining pressures required to inhibit fracturing. Micromechanical tests, such as nanoindentation and micropillar compression, can provide insight into plastic rheology under these conditions because, due to the small scale, plastic deformation can be achieved at low temperatures without the need for secondary confinement. In this study, nanoindentation and micropillar compression experiments were performed on oriented grains within a polycrystalline sample of Carrara marble at temperatures ranging from 23 to 175 °C, using a nanoindenter. Indentation hardness is acquired directly from nanoindentation experiments. These data are then used to calculate yield stress as a function of temperature using numerical approaches that model the stress state under the indenter. Indentation data are complemented by uniaxial micropillar compression experiments. Cylindrical micropillars ∼1 and ∼3 μm in diameter were fabricated using a focused ion beam-based micromachining technique. Yield stress in micropillar experiments is determined directly from the applied load and micropillar dimensions. Mechanical data are fit to constitutive flow laws for low-temperature plasticity and compared to extrapolations of similar flow laws from high-temperature experiments. This study also considered the effects of crystallographic orientation on yield stress in calcite. Although there is a clear orientation dependence to plastic yielding, this effect is relatively small in comparison to the influence of temperature.
登录
查看更多内容
玻璃的压痕塑性和随之而来的断裂
DOI：
10.1088/0022-3727/9/15/011
发表时间：
1976
期刊：
Journal of Physics D
影响因子：
--
作者：
M. Swain;J. Hagan
通讯作者：
J. Hagan
脆性区碳酸盐断层带位错蠕变的织物转变
影响因子：
2.9
作者：
Sungshil Kim;J. Ree;R. Han;Nahyeon Kim;H. Jung
通讯作者：
H. Jung
高压扭转变形方解石的微观结构：X 射线线剖面研究
影响因子：
2.9
作者：
R. Schuster;E. Schafler;N. Schell;M. Kunz;R. Abart
通讯作者：
R. Abart
r 和 f 滑移对方解石单晶的高温变形
DOI：
10.1144/gsl.sp.1990.054.01.25
发表时间：
1990
期刊：
Geological Society, London, Special Publications
影响因子：
--
作者：
J. D. Bresser;C. Spiers
通讯作者：
C. Spiers
影响因子：
5.3
作者：
Hirth, G.;Kohlstedt, D. L.
通讯作者：
Kohlstedt, D. L.