Mixed mode I/III fracture toughness in extruded magnesium alloys

Sharma, R. ; Kamat, S. V. ; Srinivas, M. ; Singh, A. K. ; Rama Rao, P. (2011) Mixed mode I/III fracture toughness in extruded magnesium alloys Materials Science and Engineering: A, 528 (18). pp. 5875-5882. ISSN 0921-5093

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09215...

Related URL: http://dx.doi.org/10.1016/j.msea.2011.04.013

Abstract

Fracture toughness under mode I and mixed mode I/III loading were determined for magnesium (Mg) as well as binary Mg-Al and Mg-Zn alloys in as-extruded condition. It was found that in Mg and in Mg-1.25Zn alloy the fracture toughness under mixed mode I/III loading was higher than that under mode I loading whereas in binary Mg-1Al and Mg-3Al alloys it was lower than that under mode I loading. The results have been explained on the basis of the fracture mechanism and the nature of the stress fields ahead of the crack tip under mixed mode I/III loading.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Extruded Magnesium Alloys; Mixed Mode Fracture Toughness; Deformation Twins; Fracture Mechanisms
ID Code:41819
Deposited On:31 May 2011 10:12
Last Modified:31 May 2011 10:12

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