The Effect of Dynamic Strain Aging on Subsequent Mechanical Properties of Dual-Phase Steels |
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| Authors: | M. J. Molaei and A. Ekrami |
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| Affiliation: | (1) Department of Materials Science and Engineering, Sharif University of Technology, Azadi Ave., Tehran, Iran;(2) School of Metallurgy and Materials Engineering, University of Tehran, P.O. Box 14395-553, Tehran, Iran |
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| Abstract: | Dual-phase (DP) steels with different martensite contents were produced by subjecting a low carbon steel to various heat treatment cycles. In order to investigate the effect of dynamic strain aging (DSA) on mechanical properties, tensile specimens were deformed 3% at 300 °C. Room temperature tensile tests of specimens which deformed at 300 °C showed that both yield and ultimate tensile strengths increased, while total elongation decreased. The fatigue limit increased after pre-strain in the DSA temperature range. The effects of martensite volume fraction on mechanical properties were discussed. |
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