Effect of Deformation Sequence and Coiling Conditions on Precipitation Strengthening in High Ti–Nb-Microalloyed Steels
نویسندگان
چکیده
Abstract In this work, multipass torsion tests followed by coiling simulations under different conditions have been performed with a reference Nb (0.03 pct) and high Ti (0.1 pct)–Nb-microalloyed steel. the case of steel, estimated yield strengths close to or over 700 MPa were obtained for some researched. However, very significant effect previous austenite grain size strain accumulation on precipitation strengthening has also observed. As result, depending deformation sequence final cooling conditions, simulation temperatures that lead highest mechanical strength varied from 600 °C 500 °C. The increasing was mainly related higher phase transformation temperatures, which led lower driving force microalloying element diffusivity, resulting in formation less coarser precipitates.
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ژورنال
عنوان ژورنال: Metallurgical and Materials Transactions
سال: 2022
ISSN: ['1073-5623', '1543-1940']
DOI: https://doi.org/10.1007/s11661-022-06670-w