Abstract
The resistance strain gage was adopted to investigate hysteresis property of 17-4PH steel treated with different proportions of Cr/Ni under the same heat treatment process. The relationship between mechanical properties, microstructure and hysteresis of the material under different proportions of elements was established. The results show that the residual austenite content has an important effect on hysteresis of the material, while the δ-ferrite content has little effect on the hysteresis of the material.
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