Bhowmick, S and Xie, ZH and Hoffman, M and Jayaram, V and Biswas, SK (2004) Nature of contact deformation of TiN films on steel. In: Journal Of Materials Research, 19 (9). pp. 2616-2624.
Nanoindentation experiments were carried out on a columnar similar to1.5-mum-thick TiN film on steel using a conical indenter with a 5-mum tip radius. Microstructural examination of the contact zone indicates that after initial elastic deformation, the deformation mechanism of the TiN is dominated by shear fracture at inter-columnar grain boundaries of the TiN film. A simple model is proposed whereby the applied load is partitioned between a deforming TiN annulus and a central expanding cavity in the steel substrate. It is possible to obtain a good fit to the experimental load-displacement curves with only one adjustable parameter, namely the inter-columnar shear fracture stress of the TiN film. The implication of results in the context of the performance of TiN films in service is also discussed.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to Materials Research Society|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||09 Nov 2004|
|Last Modified:||19 Sep 2010 04:17|
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