Back stress strengthening and strain hardening in gradient structure
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 145-151 |
| Journal / Publication | Materials Research Letters |
| Volume | 4 |
| Issue number | 3 |
| Online published | 2 Mar 2016 |
| Publication status | Published - 2016 |
| Externally published | Yes |
Link(s)
| DOI | DOI |
|---|---|
| Attachment(s) | Documents
Publisher's Copyright Statement
|
| Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85009260486&origin=recordpage |
| Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(a5bd2f24-d56f-471f-893c-811a12ca6242).html |
Abstract
We report significant back stress strengthening and strain hardening in gradient structured (GS) interstitial-free (IF) steel. Back stress is long-range stress caused by the pileup of geometrically necessary dislocations (GNDs). A simple equation and a procedure are developed to calculate back stress basing on its formation physics from the tensile unloading-reloading hysteresis loop. The gradient structure has mechanical incompatibility due to its grain size gradient. This induces strain gradient, which needs to be accommodated by GNDs. Back stress not only raises the yield strength but also significantly enhances strain hardening to increase the ductility.
Research Area(s)
- Back stress, Ductility, Geometrically necessary dislocations, Gradient structure, Work hardening
Citation Format(s)
Back stress strengthening and strain hardening in gradient structure. / Yang, Muxin; Pan, Yue; Yuan, Fuping et al.
In: Materials Research Letters, Vol. 4, No. 3, 2016, p. 145-151.
In: Materials Research Letters, Vol. 4, No. 3, 2016, p. 145-151.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Download Statistics
No data available
