@article{song_wang_yang_chen_liang_ma_jiang_ma_2020, title={Microstructure and deformation behavior of a novel steel rebar: Effect of the heterogeneous microstructure of soft ferrite and Hard bainite}, volume={9}, ISSN={["2214-0697"]}, DOI={10.1016/j.jmrt.2020.08.085}, abstractNote={This study reports a detailed investigation of the deformation behavior and microstructural evolution of a novel ultra-low carbon Cr-Mo alloyed dual-phase steel rebar aimed for marine applications. The rebar matrix consists of the lamellar ferrite/bainite dual phases with the lamellar interfaces along the rolling direction. The soft ferrite phase is composed of larger grains with a low dislocation density, while the hard bainite phase is composed of finer grains with a much higher dislocation density. By comparing the strain hardening behavior from different sites at the rebar with varying ferrite and bainite volume fractions, it shows that the hetero-deformation induced (HDI) hardening is strong and dominates the overall work hardening behavior in the early stage of plastic deformation by prevailing over the conventional sum-up of contribution of each phase alone. In this stage, the plastic deformation of ferrite was constrained by the disproportionally-strained, neighboring bainite, creating the accumulation of geometrically necessary dislocations (GNDs) at the phase interface and the long-range HDI stress. The results also reinforce the understanding of deformation behavior of dual-phase steels, especially around the role of HDI stress and hardening.}, number={6}, journal={JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T}, author={Song, Dan and Wang, Guowei and Yang, Falin and Chen, Huande and Liang, Ningning and Ma, Han and Jiang, Jinghua and Ma, Xiaolong}, year={2020}, pages={12281–12292} } @article{song_li_liang_yang_jiang_sun_wu_ma_ma_2019, title={Simultaneously improving corrosion resistance and mechanical properties of a magnesium alloy via equal-channel angular pressing and post water annealing}, volume={166}, ISSN={["1873-4197"]}, DOI={10.1016/j.matdes.2019.107621}, abstractNote={Developing magnesium alloys with both high corrosion resistance and superior mechanical properties is a long-standing challenge for the lightweight metal community. Herein, processing route combining equal-channel angular pressing (ECAP) and water annealing to achieve simultaneous improvements on both anti-corrosion and mechanical performances of a Mg-2Zn-Mn-Ca-Ce alloy is proposed. The cast alloy was ECAP-processed at 573 k for 12 passes to obtain ultra-fine grains (UFG), followed by water annealing in the autoclave under 160 °C for 3 h. The treated sample exhibits significantly improved corrosion resistance, presenting less corrosion current density and hydrogen evolution rate in the Hanks' solution. The doubled yield/ultimate strength and elongation, as well as the better-maintained mechanical integrity after corrosion, were achieved simultaneously. The profuse dislocations and grain boundaries in the UFG substrate offer intensive hydrothermal-reaction driving force, favoring the formation of a thicker and more compact Mg(OH)2 coating layer. Such a protective coating layer together with the annealed substrate with fewer crystal defects effectively retards the corrosion degradation and preserves the mechanical integrity afterwards. Meanwhile, the modified heterogeneous substrate microstructure results in the observed superior strength-ductility synergy. The proposed processing route and the resulted comprehensive properties should be applicable to other magnesium alloys as well.}, journal={MATERIALS & DESIGN}, author={Song, Dan and Li, Cheng and Liang, Ningning and Yang, Falin and Jiang, Jinghua and Sun, Jiapeng and Wu, Guosong and Ma, Aibin and Ma, Xiaolong}, year={2019}, month={Mar} } @article{jiang_wang_ma_shi_zhang_yang_lu_zhou_2011, title={Heat treatment of novel low-carbon multi-alloyed anti-wear marine steel}, volume={21}, number={3}, journal={Progress in Natural Science}, author={Jiang, J. H. and Wang, Q. Y. and Ma, A. B. and Shi, J. and Zhang, L. Y. and Yang, H. D. and Lu, F. M. and Zhou, Q.}, year={2011}, pages={254–261} } @article{jiang_ma_lu_saito_watazu_song_zhang_nishida_2011, title={Improving corrosion resistance of Al-11mass%Si alloy through a large number of ECAP passes}, volume={62}, number={9}, journal={Materials and Corrosion-Werkstoffe und Korrosion}, author={Jiang, J. H. and Ma, A. B. and Lu, F. M. and Saito, N. and Watazu, A. and Song, D. and Zhang, P. and Nishida, Y.}, year={2011}, pages={848–852} } @article{jiang_ma_weng_fu_zhang_liu_lu_2009, title={Corrosion fatigue performance of pre-split steel wires for high strength bridge cables}, volume={32}, ISSN={["1460-2695"]}, DOI={10.1111/j.1460-2695.2009.01384.x}, abstractNote={ABSTRACT}, number={9}, journal={FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES}, author={Jiang, J. H. and Ma, A. B. and Weng, W. F. and Fu, G. H. and Zhang, Y. F. and Liu, G. G. and Lu, F. M.}, year={2009}, month={Sep}, pages={769–779} } @article{ma_jiang_saito_shigematsu_yuan_yang_nishida_2009, title={Improving both strength and ductility of a Mg alloy through a large number of ECAP passes}, volume={513-14}, journal={Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing}, author={Ma, A. B. and Jiang, J. H. and Saito, N. and Shigematsu, I. and Yuan, Y. C. and Yang, D. H. and Nishida, Y.}, year={2009}, pages={122–127} } @article{jiang_ma_saito_shen_song_lu_yoshinori_yang_lin_2009, title={Improving corrosion resistance of RE-containing magnesium alloy ZE41A through ECAP}, volume={27}, DOI={10.1016/S1002-0721(08)60348-8}, abstractNote={Significant grain refinement was achieved in rare earth (RE) containing aeronautic magnesium alloy ZE41A through equal-channel angular pressing (ECAP) using rotary die at 603 K. Influence of ECAP pass number on its microstructure change and corrosion behavior was investigated by optical microscope (OM)/scanning electron microscope (SEM) observation and potentiostatic polarization tests in aqueous solution of NaCl, respectively. The results showed that ultrafine equiaxial grains (about 2.5 μm) were obtained over 16 passes due to plastic-induced grain refinement accommodated by dynamic recrystallization. The lower corrosion current density and nobler corrosion potential correlated with large number of pressing passes were attributed to the low tendency toward localized corrosion with broken secondary phase after homogenization on ultrafine-grained Mg matrix. The multi-pass ECAP method made the ZE41A aeronautic magnesium alloy more attractive since severe plastic deformation may significantly improve its corrosion resistance besides superior mechanical properties.}, number={5}, journal={Journal of Rare Earths}, author={Jiang, J. H. and Ma, A. B. and Saito, N. and Shen, Z. X. and Song, D. and Lu, F. M. and Yoshinori, N. and Yang, D. H. and Lin, P. H.}, year={2009}, pages={848–852} }