|
Title
|
|
|
|
The role of disclinations in two phase changes induced by temperature and pressure in crystalline solids: Melting and the brittle-ductile transition
|
|
|
Author
|
|
|
|
|
|
|
Abstract
|
|
|
|
| It has long been known that the melting temperature T-m of close-packed metals correlates well with the mono-vacancy formation energy. However, with the possible exception of the face-centered-cubic metals, there is a prior phase transition from a mechanically brittle solid phase to a ductile phase. Here the likely role of disclinations in the brittle-ductile phase change is stressed. The present picture may help to understand the brittle-ductile transition not only in crystalline materials but also in amorphous phases. The structure of such phases can probably be characterized in terms of a disordered disclination network. As examples of elemental crystalline solids, Si and graphite are finally discussed, with the melting under pressure of graphite being quantified. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Physics and chemistry of liquids. - London
|
|
|
Publication
|
|
|
|
London
:
2004
|
|
|
ISSN
|
|
|
|
0031-9104
|
|
|
DOI
|
|
|
|
10.1080/003191004123312732415
|
|
|
Volume/pages
|
|
|
|
42
:5
(2004)
, p. 545-550
|
|
|
ISI
|
|
|
|
000224560300008
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|