Abstract
Engineering stress-control ratcheting tests have been done on specimens made of 2.3mm thick Titanium stabilised interstitial free steel. Tests were done for six different amounts ratcheting strain accumulation at constant stress parameters. Post-ratcheting tensile test results show that while yield strength and tensile strength linearly increase, tensile ductility, both total and uniform, linearly decreases with increase in the amount of prior ratcheting strain. The extrapolated tensile strength and total elongation data at zero ratcheting strain show extremely good correspondence with the measured tensile strength and total elongation data of the steel in as-received condition. It is proposed that post-ratcheting uniform tensile ductility can be used as a good indicator for assessment of damage due to ratcheting.
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