Effect of Austenitizing Temperature on Microstructures and Mechanical Properties of Si-Mn Hot-Rolled Plate After Quenching and Partitioning Treatment
Received date: 2021-06-10
Revised date: 2021-09-22
Online published: 2021-12-16
Supported by
Chinese Postdoctoral Science Foundation(2020M682494);Technical Innovation Special Major Project of Hubei Province(2017AAA113)
The production of quenching and partitioning (Q&P) steel using hot-rolled steel instead of cold-rolled steel can significantly reduce the manufacturing process time and cost. However, the initial microstructures of hot-rolled and cold-rolled steels are different, which affect the microstructures and mechanical properties of Q&P steel. Because most studies used Q&P steel prepared from cold-rolled steel, the microstructures and mechanical properties of Q&P steel prepared from hot-rolled steel are unclear. This study examines the microstructures and mechanical properties of Q&P Si-Mn steel prepared from hot-rolled steel as a function of the austenitizing temperature. The results showed that the ferrite in the Q&P Si-Mn steel produced from the hot-rolled steel had lath-type and blocky-type morphologies. The observed ferrite morphology could influence the morphology of the adjacent retained austenite. The lath-type and blocky-type ferrite surrounding the retained austenite was mainly observed as the thin lath and blocky types, respectively. The ferrite and retained austenite contents decreased with increasing austenitizing temperature. In addition, the corresponding yield and tensile strengths increased gradually with a concomitant decrease in elongation and the product of strength and elongation. When the austenitizing temperature was 810oC, the product of strength and elongation of the Q&P Si-Mn steels produced from hot-rolled steel reached 28.36 GPa·%, which was approximately 36% higher than that of Q&P980 produced industrially from cold-rolled steel. The higher product of strength and elongation of Q&P Si-Mn steel produced from hot-rolled steel may be related to the different morphologies of ferrite, which might control the morphology and stability of the adjacent retained austenite. These experimental results could provide a theoretical basis for preparing Q&P steel from hot-rolled steel instead of cold-rolled steel.
Yuanyao CHENG , Gang ZHAO , Deming XU , Xinping MAO , Guangqiang LI . Effect of Austenitizing Temperature on Microstructures and Mechanical Properties of Si-Mn Hot-Rolled Plate After Quenching and Partitioning Treatment[J]. Acta Metall Sin, 2023 , 59(3) : 413 -423 . DOI: 10.11900/0412.1961.2021.00243
| 1 | Speer J G, Matlock D K, De Cooman B C, et al. Carbon partitioning into austenite after martensite transformation [J]. Acta Mater., 2003, 51: 2611 |
| 2 | Speer J G, Matlock D K, Cooman B C D, et al. Comments on “On the definitions of paraequilibrium and orthoequilibrium” by M. Hillert and J. ?gren, Scripta Materialia, 50, 697-9 (2004) [J]. Scr. Mater., 2005, 52: 83 |
| 3 | Wang L, Feng W J. Development and application of Q&P sheet steels [A]. Advanced Steels: The Recent Scenario in Steel Science and Technology [M]. Berlin, Heidelberg: Springer, 2011: 255 |
| 4 | Yin R Y. Achievement on the thin slab casting process in China [J]. Iron steel, 2008, 43(3): 1 |
| 4 | 殷瑞钰. 中国薄板坯连铸连轧的进展 [J]. 钢铁, 2008, 43(3): 1 |
| 5 | Gan Y, Li G Y, Ma M T, et al. Development of advanced compact steel process and deep working technology for high-strength-ductility auto-parts [A]. The 10th CSM Steel Congress & The 6th Baosteel Biennial Academic Conference [C]. Beijing: Metallurgical Industry Press, 2015: 1802 |
| 5 | 干 勇, 李光瀛, 马鸣图 等. 先进短流程-深加工新技术与高强塑性汽车构件的开发 [A]. 第十届中国钢铁年会暨第六届宝钢学术年会论文集II [C]. 北京: 冶金工业出版社, 2015: 1802 |
| 6 | Gouné M, Aoued S, Danoix F, et al. Alloying-element interactions with austenite/martensite interface during quenching and partitioning of a model Fe-C-Mn-Si alloy [J]. Scr. Mater., 2019, 162: 181 |
| 7 | Huyghe P, Caruso M, Collet J L, et al. In situ quantitative assessment of the role of silicon during the quenching and partitioning of a 0.2C steel [J]. Metall. Mater. Trans., 2019, 50A: 3486 |
| 8 | Kang T, Zhao Z Z, Liang J H, et al. Effect of the austenitizing temperature on the microstructure evolution and mechanical properties of Q&P steel [J]. Mater. Sci. Eng., 2020, A771: 138584 |
| 9 | Zhao Z Z, Liang J H, Zhao A M, et al. Effects of the austenitizing temperature on the mechanical properties of cold-rolled medium-Mn steel system [J]. J. Alloys Compd., 2017, 691: 51 |
| 10 | Mandal G, Ghosh S K, Bera S, et al. Effect of partial and full austenitisation on microstructure and mechanical properties of quenching and partitioning steel [J]. Mater. Sci. Eng., 2016, A676: 56 |
| 11 | Chen S, Hu J, Shan L Y, et al. Characteristics of bainitic transformation and its effects on the mechanical properties in quenching and partitioning steels [J]. Mater. Sci. Eng., 2021, A803: 140706 |
| 12 | Ariza-Echeverri E A, Masoumi M, Nishikawa A S, et al. Development of a new generation of quench and partitioning steels: Influence of processing parameters on texture, nanoindentation, and mechanical properties [J]. Mater. Des., 2020, 186: 108329 |
| 13 | Li Y J, Kang J, Zhang W N, et al. A novel phase transition behavior during dynamic partitioning and analysis of retained austenite in quenched and partitioned steels [J]. Mater. Sci. Eng., 2018, A710: 181 |
| 14 | Zinsaz-Borujerdi A, Zarei-Hanzaki A, Abedi H R, et al. Room temperature mechanical properties and microstructure of a low alloyed TRIP-assisted steel subjected to one-step and two-step quenching and partitioning process [J]. Mater. Sci. Eng., 2018, A725: 341 |
| 15 | Zhang J, Ding H, Misra R D K, et al. Enhanced stability of retained austenite and consequent work hardening rate through pre-quenching prior to quenching and partitioning in a Q-P microalloyed steel [J]. Mater. Sci. Eng., 2014, A611: 252 |
| 16 | Ding R, Tang D, Zhao A M, et al. Effect of ultragrain refinement on quenching and partitioning steels manufactured by a novel method [J]. Mater. Des., 2015, 87: 640 |
| 17 | Ren Y Q, Xie Z J, Zhang H W, et al. Effect of precursor microstructure on morphology feature and mechanical property of C-Mn-Si steel [J]. Acta Metall. Sin., 2013, 49: 1558 |
| 17 | 任勇强, 谢振家, 张宏伟 等. 前躯体组织对C-Mn-Si钢组织特征及力学行为的影响 [J]. 金属学报, 2013, 49: 1558 |
| 18 | Huang J, Poole W J, Militzer M. Austenite formation during intercritical annealing [J]. Metall. Mater. Trans., 2004, 35A: 3363 |
| 19 | Su Y Y, Chiu L H, Chuang T L, et al. Retained austenite amount determination comparison in JIS SKD11 steel using quantitative metallography and X-ray diffraction methods [J]. Adv. Mater. Res., 2012, 482-484: 1165 |
| 20 | van Dijk N H, Butt A, Zhao L M, et al. Thermal stability of retained austenite in TRIP steels studied by synchrotron X-ray diffraction during cooling [J]. Acta Mater., 2005, 53: 5439 |
| 21 | Kang Y L, Fu J, Liu D L, et al. Microstructure and Properties Control of Thin Slab Continuous Casting and Rolling Steel [M]. Beijing: Metallurgical Industry Press, 2006: 178 |
| 21 | 康永林, 傅 杰, 柳得橹 等. 薄板坯连铸连轧钢的组织性能控制 [M]. 北京: 冶金工业出版社, 2006: 178 |
| 22 | Santofimia M J, Zhao L, Sietsma J. Microstructural evolution of a low-carbon steel during application of quenching and partitioning heat treatments after partial austenitization [J]. Metall. Mater. Trans., 2009, 40A: 46 |
| 23 | Zhang J, Ding H, Misra R D K. Enhanced strain hardening and microstructural characterization in a low carbon quenching and partitioning steel with partial austenization [J]. Mater. Sci. Eng., 2015, A636: 53 |
| 24 | Wang C Y, Zhang Y J, Cao W Q, et al. Austenite/martensite structure and corresponding ultrahigh strength and high ductility of steels processed by Q&P techniques [J]. Sci. China Technol. Sci., 2012, 55: 1844 |
| 25 | Arlazarov A, Gouné M, Bouaziz O, et al. Evolution of microstructure and mechanical properties of medium Mn steels during double annealing [J]. Mater. Sci. Eng., 2012, A542: 31 |
| 26 | Shi J, Sun X J, Wang M Q, et al. Enhanced work-hardening behavior and mechanical properties in ultrafine-grained steels with large-fractioned metastable austenite [J]. Scr. Mater., 2010, 63: 815 |
| 27 | Xiong X C, Chen B, Huang M X, et al. The effect of morphology on the stability of retained austenite in a quenched and partitioned steel [J]. Scr. Mater., 2013, 68: 321 |
| 28 | Cai Z H, Ding H, Misra R D K, et al. Austenite stability and deformation behavior in a cold-rolled transformation-induced plasticity steel with medium manganese content [J]. Acta Mater., 2015, 84: 229 |
| 29 | Wang M M, Hell J C, Tasan C C. Martensite size effects on damage in quenching and partitioning steels [J]. Scr. Mater., 2017, 138: 1 |
| 30 | Yan S, Liu X H, Liu W J, et al. Comparative study on microstructure and mechanical properties of a C-Mn-Si steel treated by quenching and partitioning (Q&P) processes after a full and intercritical austenitization [J]. Mater. Sci. Eng., 2017, A684: 261 |
| 31 | Sun J, Yu H, Wang S Y, et al. Study of microstructural evolution, microstructure-mechanical properties correlation and collaborative deformation-transformation behavior of quenching and partitioning (Q&P) steel [J]. Mater. Sci. Eng., 2014, A596: 89 |
| 32 | Ding R, Tang D, Zhao A M, et al. A new type of quenching and partitioning processing developed from martensitic pre-microstructure [J]. Mater. Manuf. Processes, 2014, 29: 704 |
| 33 | Sun S H, Zhao A M. Effect of microstructure morphology on mechanical properties of quenching and partitioning steel [J]. Mater. Sci. Technol, 2018, 34: 347 |
| 34 | Li Y J, Liu D, Chen D, et al. Response of retained austenite to quenching temperature in a novel low density Fe-Mn-Al-C steel processed by hot rolling-air cooling followed by non-isothermal partitioning [J]. Mater. Sci. Eng., 2019, A753: 197 |
| 35 | Yi H L, Chen P, Bhadeshia H K D H. Optimizing the morphology and stability of retained austenite in a δ-TRIP steel [J]. Metall. Mater. Trans., 2014, 45A: 3512 |
| 36 | Zhou Q, Qian L H, Tan J, et al. Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels [J]. Mater. Sci. Eng., 2013, A578: 370 |
| 37 | Xie Z J, Ren Y Q, Zhou W H, et al. Stability of retained austenite in multi-phase microstructure during austempering and its effect on the ductility of a low carbon steel [J]. Mater. Sci. Eng., 2014, A603: 69 |
/
| 〈 |
|
〉 |
