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  • Deformation behavior in bulk nanostructured materials: An experimental and modelling approach
Deformation behavior in bulk nanostructured materials: An experimental and modelling approach

Deformation behavior in bulk nanostructured materials: An experimental and modelling approach

Date8th Dec 2020

Time03:00 PM

Venue Through Google Meet: https://meet.google.com/zav-ehrc-aqp

PAST EVENT

Details

Cryodeformation processes are well-established for developing materials with superior mechanical and structural properties. Several researchers have used cryodeformation in variety of manufacturing processes like cryoforging, cryorolling, cryogrinding, cryomachining, cryoFSP etc., to achieve exceptional structural properties. The exceptional property enhancement via cryodeformation is due to the resultant microstructural evolution. The microstructural evolution during cryodeformation varies with stacking fault energy (SFE) of the materials, process parameters and deformation strain. The co-relationship between process parameter and microstructural evolution is a challenging task, as the classical deformation-based laws will not be applicable appropriately for cryodeformed materials. The first part of this seminar will be focused towards understanding the microstructural parameters which governs the deformation behavior in cryodeformed materials. These microstructural parameters were used in developing the 1st principle based mathematical models to predict the following behavior on cryodeformed materials with varying SFE: (i) room temperature deformation behavior with different straining paths and (ii) deformation behavior at cryogenic temperature. The modeling approach will be discussed in the last part of the seminar presentation. The developed models for FCC materials with varying SFE will be useful in understanding the microstructural evolution with respect to the deformation related parameters. Such microstructure and property correlation will be useful in dealing with several real-life structural applications of cryodeformed materials when subjected to different straining paths (loading and unloading of structural components), high speed deformation path (crash worthiness for automotive and aerospace applications), cryogenic deformation paths (spacecraft, cryo-engines etc.).

Speakers

Mr Behera Srinivas (ME13D216)

Department of Mechanical Engineering