INFLUENCE OF TEMPERING TEMPERATURE ON THE MICROSTRUCTURE AND ULTIMATE TENSILE STRENGTH OF 28Cr3SiNiMoWV STEEL
Abstract
In this research, the influences of the tempering temperature on the microstructure and ultimate tensile strength of 28Cr3SiNiMoWV steel were studied. The microstructure and ultimate tensile strength were investigated after tempering 28Cr3SiNiMoWV steel at different temperatures, ranging from 280 °C to 440 °C for 2 h. The results show that after tempering it at different temperatures, the microstructure of 28Cr3SiNiMoWV steel was tempered martensite. During the tempering process, the alloy carbides precipitated in the martensite matrix. Precipitation of alloy carbides in the microstructures of different specimens is the cause for an increase in the ultimate tensile strength. With the increasing tempering temperature, the ultimate tensile strength initially increases from 1390 MPa to 1601 MPa, and then decreases to 1466 MPa, with its maximum value at 280 °C.
References
2 M. Diao, C. Guo, Q. Sun, F. Jiang, L. Li, J. Li, D. Xu, C. Liu, H. Song, Improving mechanical properties of austenitic stainless steel by the grain refinement in wire and arc additive manufacturing assisted with ultrasonic impact treatment, J Mat Sci Eng A, 857 (2022) 144044, doi:10.1016/j.msea.2022.144044
3 Ø. Grong, L. Kolbeinsen, C. V. D. Eijk, G. Tranell, Microstructure Control of Steels through Dispersoid Metallurgy Using Novel Grain Refining Alloys, ISIJ International, 46 (2006) 6, 824-31, doi:10.2355/isijinternational.46.824
4 P. Zhang, Y. Chen, W. Xiao, D. Ping, X. Zhao, Twin structure of the lath martensite in low carbon steel, Pro. in Nat. Sci.: Mat. Int., 26 (2016) 2, 169-72, doi:10.1016/j.pnsc.2016.03.004
5 J. W. Liu, X. Luo, B. Huang, Y. Q. Yang, W. J. Lu, X. W. Yi, H. Wang, Nano-Twinning and Martensitic Transformation Behaviors in 316L Austenitic Stainless Steel During Large Tensile Deformation, Acta Metall. Sin., (2022), doi:10.1007/s40195-022-01487-3
6 E. Olorundaisi, T. Jamiru, T. A. Adegbola, Response surface modelling and optimization of temperature and holding time on dual phase steel, Materialstoday: Proceedings, 38 (2021) 2, 1164-69, doi:10.1016/j.matpr.2020.07.408
7 D. Frómeta, N. Cuadrado, J. Rehrl, C. Suppan, T. Dieudonné, P. Dietsch, J. Calvo, D. Casellas, Microstructural effects on fracture toughness of ultra-high strength dual phase sheet steels, Mat. Sci. Eng. A, 802 (2021) 140631, doi:10.1016/j.msea.2020.140631
8 Y. Zheng, F. Wang, C. Li, Y. Lin, R. Cao, Effect of Martensite Structure and Carbide Precipitates on Mechanical Properties of Cr-Mo Alloy Steel with Different Cooling Rate, J High Temp. Mater. Proc., 38 (2019) 113-24, doi:10.1515/htmp-2018-0018
9 T. Zhou, R. P. Babu, Z. Hou, J. Odqvist, P. Hedström, Precipitation of multiple carbides in martensitic CrMoV steels - experimental analysis and exploration of alloying strategy through thermodynamic calculations, Materialia, 9 (2020) 100630, doi:10.1016/j.mtla.2020.100630
10 X. Yao, J. Huang, Y. Qiao, M. Sun, B. Wang, B. Xu, Precipitation Behavior of Carbides and Its Effect on the Microstructure and Mechanical Properties of 15CrNi3MoV Steel, Metals, 12 (2022) 10, 1758, doi:10.3390/met12101758
11 S. H. Talebi, M. Jahazi, H. Melkonyan, Retained Austenite Decomposition and Carbide Precipitation during Isothermal Tempering of a Medium-Carbon Low-Alloy Bainitic Steel, Materials (Basel), 11 (2018) 8, 1441, doi:10.3390/ma11081441
12 S. A. Yamini, Influence of microalloying elements (Ti, Nb) and nitrogenconcentrations on precipitation of pipeline steels—Athermodynamic approach, Eng. Repo., 3 (2020) 7, 1-10, doi:10.1002/eng2.12337
13 M. M. A. Bepari, Carburizing: A Method of Case Hardening of Steel, Comp. Mat. Fini., 2 (2017), 71-106, doi:10.1016/B978-0-12-803581-8.09187-6