Abstract
Microstructural characterization and modeling has shown that a variety of metals deformed by different thermomechanical processes follows a general path of grain subdivision, by dislocation boundaries and high angle boundaries. This subdivision has been observed to very small structural scales of the order of 10 nm, produced by deformation under large sliding loads. Limits to the evolution of microstructural parameters during monotonic loading have been investigated based on a characterization by transmission electron microscopy. Such limits have been observed at an equivalent strain of about 10 for the misorientation angle and the density of high angle boundaries. However, the spacing between boundaries decreases with increasing strain without saturation even at extreme strains. The observed changes in microstructural parameters lead to a discussion of the flow stress/strain relationship.
| Original language | English |
|---|---|
| Title of host publication | Ultrafine grained materials 3 |
| Editors | Y.T. Zhu, T.G. Langdon, R.Z. Valiev |
| Place of Publication | Warrendale, PA |
| Publisher | Minerals, Metals and Materials Society |
| Publication date | 2004 |
| Pages | 67-74 |
| ISBN (Print) | 0-87339-571-9 |
| Publication status | Published - 2004 |
| Event | 133rd Annual Meeting & Exhibition of The Minerals, Metals & Materials Society (TMS) - Charlotte, NC, United States Duration: 14 Mar 2004 → 18 Mar 2004 http://www.tms.org/meetings/annual-04/annmtg04home.html |
Conference
| Conference | 133rd Annual Meeting & Exhibition of The Minerals, Metals & Materials Society (TMS) |
|---|---|
| Country/Territory | United States |
| City | Charlotte, NC |
| Period | 14/03/2004 → 18/03/2004 |
| Internet address |