Srinivas, M. ; Malakondaiah, G. ; Rama Rao, P. (1987) Influence of polycrystal grain size on fracture toughness of and fatigue threshold in Armco iron Engineering Fracture Mechanics, 28 (5-6). pp. 561-576. ISSN 0013-7944
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/001379...
Related URL: http://dx.doi.org/10.1016/0013-7944(87)90053-1
Abstract
Influence of polycrystal grain size on ductile fracture toughness of and fatigue threshold stress intensity in Armco iron has been studied over a grain size range 40 to 1050 μm. Both ductile fracture toughness and fatigue threshold stress intensity have been found to decrease with increasing grain size and the variation in either case follows a relationship similar to that proposed by Hall-Petch for strength. The variation of toughness with grain size can be understood in terms of plastic zone size whereas the fatigue threshold behaviour in Armco iron appears to be controlled by the critical value of crack tip opening displacement range.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 41803 |
| Deposited On: | 31 May 2011 08:48 |
| Last Modified: | 31 May 2011 08:48 |
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