Deformation Mode Dependency on Strain Rate Sensitivity of Volume Resistivity in TRIP Steel

Takeshi Iwamoto; Shiro Yamanaka; Alexis Rusinek

doi:10.4028/www.scientific.net/KEM.535-536.473

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 535-536Deformation Mode Dependency on Strain Rate...

Deformation Mode Dependency on Strain Rate Sensitivity of Volume Resistivity in TRIP Steel

Abstract:

With a phenomenon of strain-induced martensitic transformation, TRIP steel is expected to show excellent impact energy absorption characteristic. It is important for an improvement of a reliability of TRIP steel to evaluate an amount of martensite. In this study, AISI304, which is a kind of TRIP steel, is deformed plastically by a conventional material testing machine and the split Hopkinson pressure bar apparatus. During the deformation of TRIP steel, a circuit based on the Kevin double bridge measures change in volume resistivity which has a correlation with the amount of martensite. Experimental results show that the change in volume resistivity during the process of deformation at various strain rates.

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Periodical:

Key Engineering Materials (Volumes 535-536)

Pages:

473-476

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.535-536.473

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Online since:

January 2013

Authors:

Takeshi Iwamoto, Shiro Yamanaka, Alexis Rusinek

Keywords:

Deformation Mode, Rate Senstivity, Strain-Induced Martensitic Transformation, TRIP Steel, Volume Resistivity

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References

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