EFFECT OF ELECTRIC CURRENT PULSE ON MECHANICAL PROPERTIES OF ULTRA-HIGH STRENGTH STEEL 1180CP

Nguyen Trung Thien

Abstract


Effect of the pulse electric current on mechanical properties of an ultra-high strength steel (UHSS) is experimentally investigated. A single pulse of electric current with a short duration of 0.36 sec is applied to the specimen under tensile plastic loading. The experimental result showed that flow stress of the UHSS nearly instantly drops at moment of electric current, following strain hardening until necking of the specimen. Uniform elongation completely depends on the pulsing strain, while ultimate tensile strength slightly changes after electric current.


Keywords


electric current, ultra-high strength steel, mechanical property.

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DOI: https://doi.org/10.15625/2525-2518/54/5A/12064 Display counter: Abstract : 129 views. PDF : 135 views.

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Published by Vietnam Academy of Science and Technology