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Erschienen in:
01.04.2008
Dynamic constitutive behavior of Ti/TiB FGM under thermo-mechanical loading
Erschienen in: Journal of Materials Science | Ausgabe 8/2008
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Abstract
An experimental investigation is conducted to evaluate the thermo-mechanical constitutive behavior of a functionally graded material (FGM) under dynamic loading. Cylindrical specimens are machined from a titanium/titanium mono-boride (Ti/TiB)-layered FGM plate using electrical discharge machining (EDM). A Split Hopkinson Pressure Bar (SHPB) apparatus with infrared (IR) spot heaters is used to investigate the effect of temperature on mechanical response of the FGM material. A series of experiments are conducted at different temperatures and the stress–strain relation for different temperatures is obtained. The material showed high thermal softening at elevated temperatures resulting in a large reduction in compressive strength and an increase in failure strain.