Mechanical Characterization of Multi Phase Steel at Different Rates of Loading

Nilamber K.  Singh; Ezio Cadoni; Maloy K. Singha; Narinder K. Gupta

doi:10.4028/www.scientific.net/MSF.710.421

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HomeMaterials Science ForumMaterials Science Forum Vol. 710Mechanical Characterization of Multi Phase Steel...

Mechanical Characterization of Multi Phase Steel at Different Rates of Loading

Abstract:

The purpose of the present paper is to investigate the mechanical properties of multi phase 800 high yield strength (MP800HY) steel under compressive loading at different strain rates (-4700s^-1to-0.001s^-1). Specimens of MP800HY steel are tested on universal testing machine to study their stress-strain behavior under quasi-static (-0.001s^-1) condition. Then, the specimens are tested under split Hopkinson pressure bar (SHPB) to study the strain rate sensitivity of the material under different rates of compressive loading (-4700s^-1, -4300 1/s, -3800 1/s, -2900s^-1 and-1600s^-1). The effect of pulse shaper in SHPB experiments has been studied. Thereafter, the applicability of the existing Johnson-Cook material model to represent the flow stress of MP800HY is examined.

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Periodical:

Materials Science Forum (Volume 710)

Pages:

421-426

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.710.421

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Online since:

January 2012

Authors:

Nilamber K. Singh, Ezio Cadoni, Maloy K. Singha, Narinder K. Gupta

Keywords:

Johnson-Cook Model, MP800HY, Pulse Shaper, Split Hopkinson Pressure Bar (SHPB), Strain Rate Sensitivity (SRS)

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