Ray, A and Sivaprasad, S and Chakrabarti, D (2012) A critical grain size concept to predict the impact transition temperature of Ti-microalloyed steels. International of Fracture, 173(2) . pp. 215-222.
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Based on the assumption that local principal stress remains the same everywhere within a ferrite grain, a critical value of grain size can be determined for a fixed TiN particle size. When the grain size is smaller than the critical size, grain boundary is expected to resist the propagation of a micro-crack that is initiated from a TiN particle. Using this concept, an attempt has been made to predict the local cleavage fracture stress and 27J impact transition temperature (ITT) of different Ti-microalloyed steels, which were subjected to (instrumented) Charpy impact testing.
|Uncontrolled Keywords:||ductile-to- brittle transition, instrumented impact testing, TiN particle size, critical ferrite-grain size|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr S Sivaprasad|
|Deposited On:||19 Mar 2012 10:23|
|Last Modified:||05 Jun 2013 14:53|
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