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# Thermo-mechanical processing of TRIP-aided steels

Ranjan, Ravi, Beladi, Hossein, Singh, Shiv Brat and Hodgson, Peter D. 2015, Thermo-mechanical processing of TRIP-aided steels, Metallurgical and materials transactions a: physical metallurgy and materials science, vol. 46, no. 7, pp. 3232-3247, doi: 10.1007/s11661-015-2885-5.

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Title Thermo-mechanical processing of TRIP-aided steels Ranjan, Ravi Beladi, Hossein Singh, Shiv Brat Hodgson, Peter D. Metallurgical and materials transactions a: physical metallurgy and materials science 46 7 3232 3247 16 Springer New York, N.Y. 2015 1073-5623 The effects of the partial replacement of Si with Al and the addition of P on the microstructure and mechanical properties of experimental TRIP-aided steels subjected to different thermo-mechanical cycles were studied. Based on the available literature and thermodynamics-based calculations, three steels with different compositions were designed to obtain optimum results from a relatively low number of experiments. Different combinations of microstructure were developed through three different kinds of thermo-mechanical-controlled processing (TMCP) routes, and the corresponding tensile properties were evaluated. The results indicated that partial replacement of Si with Al improved the strength-ductility balance along with providing an improved variation in the incremental change in the strain-hardening exponent. However, the impact of the P addition was found to depend more on the final microstructure obtained by the different TMCP cycles. It has also been shown that an increase in the volume fraction of the retained austenite ($$V_{{\gamma_{\text{ret}} }}$$Vγret) or its carbon content ($$C_{{\gamma_{\text{ret}} }}$$Cγret) resulted in an improved strength-ductility balance, which can be attributed to better exploitation of the TRIP effect. eng 10.1007/s11661-015-2885-5 091299 Materials Engineering not elsewhere classified 970109 Expanding Knowledge in Engineering C1 Refereed article in a scholarly journal ©2015, Springer Verlag http://hdl.handle.net/10536/DRO/DU:30074027