Disclinations and disconnections in minerals and metals

被引：59

作者：

Hirth, John P.

Hirth, Greg ^{[1
]}

Wang, Jian ^{[2
]}

机构：

[1] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA

[2] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2020年 / 117卷 / 01期

基金：

美国国家科学基金会;

关键词：

disconnection; disclination; metal; mineral; DEFORMATION TWINS; DISLOCATION; MECHANISM; DEFECTS; CREEP; MODEL; MIGRATION; SCIENCE; MANTLE; FIELD;

D O I：

10.1073/pnas.1915140117

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A different type of defect, the coherency disclination, is added to disclination types. Disconnections that include disclination content are considered. A criterion is suggested to distinguish disconnections with dislocation content from those with disclination content. Electron microscopy reveals unit disconnections in a low albite grain boundary, defects important in grain boundary sliding. Disconnections of varying step heights are displayed and shown to define both deformed and recovered structures.

引用

页码：196 / 204

页数：9

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