Non-destructive determination of the yield strength and flow properties of high-manganese twinning-induced plasticity steel

The applicability of the automated ball indentation (ABI) technique for non-destructively determining the yield strength and flow properties of a high-manganese twinning-induced plasticity steel has been explored for different grain structures. True stress–true plastic strain curves derived from the ABI measurements agreed closely with those from conventional uniaxial tensile tests showing that the technique can be used to determine the yield strength, true-stress versus true-plastic strain curve, the strength coefficient and the strain hardening exponent of the steel concerned.