Static and dynamic constitutive behavior and fracture of titanium based FGM under thermo-mechanical loading

Document Type

Conference Proceeding

Date of Original Version

12-1-2009

Abstract

An experimental study has been conducted to investigate the static and dynamic constitutive behaviors and fracture of titanium based functionally graded material (FGM) under different temperature. The material used for the present study is a Ti/TiB FGM plate consisting of seven layers with100 % Ti at one end and 85% TiB at the other. The specimens are machined using a wire electrical discharge machining (EDM) technique. The dynamic constitutive behavior in compression is investigated using the split Hopkinson pressure bar (SHPB) technique in conjunction with Infra red spot heater. At elevated temperature the material showed high thermal softening with reduction in failure stress and an increase in failure strain. Quasi-static and dynamic fracture-initiation toughness under thermo-mechanical loading is also investigated using three-point bending experiment and the effect of temperature and loading rate on the fracture-initiation toughness of this material is discussed. ©2009 Society for Experimental Mechanics Inc.

Publication Title, e.g., Journal

Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009

Volume

3

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