Prasad, Y. V. R. K. ; Rao, K. P. ; Hort, N. ; Kainer, K. U. (2008) Hot working parameters and mechanisms in as-cast Mg–3Sn–1Ca alloy Materials Letters, 62 (26). pp. 4207-4209. ISSN 0167-577X
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S01675...
Related URL: http://dx.doi.org/10.1016/j.matlet.2008.06.035
Abstract
The hot working characteristics of as-cast Mg–3Sn–1Ca alloy have been studied using processing-map technique and the kinetic rate equation. The map exhibited two domains; one in the lower strain rate range (0.0003-0.01 s-1) and the other in the higher strain rate range (0.1-10 s-1)-both falling in the same temperature range of 350–550 s-1. Hot extrusion at 500°C and a speed corresponding to an average strain rate of 3 s-1 exhibited dynamically recrystallized microstructure. The estimated apparent activation energy values are higher than those for self-diffusion in pure magnesium suggesting that the large volume fraction of MgSnCa intermetallic particles causes significant back stress.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Hot Working; Magnesium Alloys; Processing Map; Dynamic recrystallization; Kinetics |
| ID Code: | 37886 |
| Deposited On: | 30 Apr 2011 08:37 |
| Last Modified: | 30 Apr 2011 08:37 |
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