Study on the Strain Hardening Exponent N under the Ultrasonic Action and Establishment of Constitutive Equation

Lin Chao An; Xue Li Cheng

doi:10.4028/www.scientific.net/KEM.621.82

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Study on the Strain Hardening Exponent N under the Ultrasonic Action and Establishment of Constitutive Equation

Abstract:

The relationship between N and strain hardening exponent curve are obtained by the tensile test of the stainless steel, low carbon steel, medium manganese steel under the ultrasonic action, it is concluded that hardening exponent n of low carbon steel is constant; Hardening exponent N stainless steel has a certain relation with the strain, show the parabolic variation; Strain index N and strain of high manganese steel is linear change. Establish the constitutive equation of low carbon steel under normal and ultrasonic frequency, This equation provides a theoretical basis for the tensile test of low carbon steel, provided with guiding significance and reference value for the application of low carbon steel in engineering practice.