Effect of microstructural anisotropy on severe plastic deformation during material removal at micrometer length-scales
Effect of microstructural anisotropy on severe plastic deformation during material removal at micrometer length-scales
复制标题
微米长度尺度材料去除过程中微观结构各向异性对严重塑性变形的影响
DOI:
10.1016/j.matdes.2020.108874
复制
发表时间:
2020
影响因子:
8.4
通讯作者:
Shankar, M. Ravi
中科院分区:
文献类型:
--
作者:
Gong, Shan;Shankar, M. Ravi
The emergence of shear inhomogeneity across grain boundaries during severe shear deformation in Cu at the micrometer length-scales is demonstrated through in situ imaging inside a scanning electron microscope. The deformation mechanics during machining is found to be orientation dependent. Microstructure refinement from severe plastic deformation in confined volumes is entirely suppressed in certain orientations but results in a characteristic ultrafine structure in others. Rampant ductile fracture is found to nucleate at some grain boundaries due to elevated dislocation densities, and this failure mechanism is imprinted on the freshly generated surface, which limits the precision of machining-based processes (e.g., diamond turning) in nanometrically-smooth roughness profiles.
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影响因子:
9.4
作者:
Kubin, L.;Hoc, T.;Devincre, B.
通讯作者:
Devincre, B.
影响因子:
9.4
作者:
N. Wieczorek;G. Laplanche;J.-K. Heyer;A.B. Parsa;J. Pfetzing-Micklich;G. Eggeler
通讯作者:
G. Eggeler
影响因子:
9.4
作者:
Hughes, D. A.;Hansen, N.
通讯作者:
Hansen, N.
影响因子:
9.4
作者:
S. Basu;M. Shankar
通讯作者:
M. Shankar