Creation of extremely fine lath martensite combined with nano needle like structured carbides in ultra high strength (UHS) military Steel

ElMeligy, Maha; El-Bitar, Taher; Ebied, Saad

doi:10.22059/jufgnsm.2023.02.06

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	Creation of extremely fine lath martensite combined with nano needle like structured carbides in ultra high strength (UHS) military Steel
Journal of Ultrafine Grained and Nanostructured Materials
مقاله 6، دوره 56، شماره 2، اسفند 2023، صفحه 173-183 اصل مقاله (2.18 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/jufgnsm.2023.02.06
نویسندگان
Maha ElMeligy^* ¹؛ Taher El-Bitar²؛ Saad Ebied³
¹Plastic Deformation Dept., Central Metallurgical R&D Institute (CMRDI), 1st Elfelazaat St., El-Tabeen, 11722 Helwan, Egypt.
²Plastic Deformation Dept., Central Metallurgical R&D Institute (CMRDI), 1st Elfelazaat St., El-Tabeen, 11722 Helwan, Egypt;
³Department of Production Engineering and Mechanical Design, Faculty of Engineering, Tanta University, Tanta 31527, Egypt.
چکیده
The steel alloys of the current study contain 0.3% carbon with different amounts of Cr, and Mo, in addition to W. The alloys were cast as Y-blocks. Cast slabs with 150x100x35 mm dimensions were then subjected to 4-steps directional hot forging into 15 mm diameter round bars in the temperature range 1200-830 oC. Austenite grain refinement was taken place by the 4-steps cross-sectional reductions, where it secures extreme fine lath martensite combined with crammed nano needle- like Cr23W2C6 carbides between the martensite laths. A quenching tempering cycle was carried on the forged bars at 250 oC for 25 min. and then air cooled to modify the martensite laths and reorganize the nano needle-like carbides to modify the mechanical properties. The optical microscopic investigation confirms extensive grain refining of the martensite laths. However, scanning electron microscope (SEM) photos at high magnifications reveal. The structure composed mainly of extreme fine laths martensite with nano needle-like structured carbides with 50 nm diameter crammed between the martensite laths. Little amounts of retained austenite (RA) phase was located tightening on the boundaries of martensite laths as white nano films. A blend of extreme-fine laths martensite and nano films of retained austenite (RA) phases in addition to the crammed nano needle-like structured carbides are working cooperatively for ultra-high strength creation. The tensile test specimens possessed continuous yielding, as the predominant microstructure contains a martensite phase. Strength increases continuously due to tungsten (W) addition up to 1.6%. During tempering, some of the nano needle-like Cr21W2C6 carbides, which were crammed between the martensite laths have a chance to migrate out from the martensite laths. The migrated nano needle carbides favor to coagulate and stick to each other to form 3D nano bulk-size spheroidal shaped carbides sizing 200 nm and precipitating on the martensite laths surface.
کلیدواژه‌ها
Ultra high strength (UHS) steel؛ Tungsten alloying؛ Multiple step forging؛ Martensite Laths؛ Crammed Nano needle- like carbides؛ Quenching-tempering processing

مراجع
O’Loughlin A, Martinez E, Peaslee K, Lekakh S. Effects of Steel Processing on Property Variations in Eglin Steel (ES-1). Materials Science and Technology. 2010. Xu Z, Ding Z, Dong L, Liang B. Characterization of M23C6 Carbides Precipitating at Grain Boundaries in 100Mn13 Steel. Metallurgical and Materials Transactions A. 2016;47(10):4862-8. Leister BM, DuPont JN, Watanabe M, Abrahams RA. Mechanical Properties and Microstructural Evolution of Simulated Heat-Affected Zones in Wrought Eglin Steel. Metallurgical and Materials Transactions A. 2015;46(12):5727-46. Zhong L, Wang B, Hu C, Zhang J, Yao Y. Hot Deformation Behavior and Dynamic Recrystallization of Ultra High Strength Steel. Metals. 2021;11(8):1239. El-Bitar T, El-Shenawy E, El-Meligy M, Almosilhy A, Dawood N. Development of Armor High Strength Steel (HSS) Martensitic Plates for Troops Carriers. Materials Science Forum. 2016;879:489-94. El-Meligy M, El-Bitar T. Hot workability of 420 J1 martensitic stainless steel. Procedia Manufacturing. 2020;50:771-6. El-Bitar T, El-Meligy M, Khedr M. Roll Pass design, numerical model and processing procedure of a 3rd generation dual phase sheet steel. Procedia Manufacturing. 2020;50:173-8. Andrew S.P, Caligiuri R.D, Eiselstein L.E. A review of penetration mechanisms and dynamic properties of tungsten and depleted uranium penetrators. Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS); 1991 Feb 17-21; New Orleans, LA (US). Ravi Kiran U, Sambasiva Rao A, Sankaranarayana M, Nandy TK. Swaging and heat treatment studies on sintered 90W–6Ni–2Fe–2Co tungsten heavy alloy. International Journal of Refractory Metals and Hard Materials. 2012;33:113-21. Luo R, Huang D, Yang M, Tang E, Wang M, He L. Penetrating performance and “self-sharpening” behavior of fine-grained tungsten heavy alloy rod penetrators. Materials Science and Engineering: A. 2016;675:262-70. Webb TO, Van Aken DC, Lekakh SN. Evaluating chemical homogeneity in the performance of Eglin steel. AFS Trans. 2014 Apr;122:317-33. Jena PK, Mishra B, RameshBabu M, Babu A, Singh AK, SivaKumar K, Bhat TB. Effect of heat treatment on mechanical and ballistic properties of a high strength armour steel. International Journal of Impact Engineering. 2010;37(3):242-9. Paules J, Nystrom J, Handerhan K. Development and Application of Ultrahigh-Strength Steels for Penetrators. 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference; 2007/04/23: American Institute of Aeronautics and Astronautics; 2007. El-Bitar T, ElMeligy M, Borek W, Ebied S. Characterization of Hot Deformation behavior for Ultra-High Strength (UHS) Steel containing Tungsten. Acta Metallurgica Slovaca. 2023;29(3):144-7. Webb Jr TO. Metallurgical optimization of high strength cast steels with stage I tempering. Missouri University of Science and Technology; 2015. Ren F, Chen F, Chen J. Investigation on Dynamic Recrystallization Behavior of Martensitic Stainless Steel. Advances in Materials Science and Engineering. 2014;2014:1-16. Thomson RC. Characterization of Carbides in Steels Using Atom Probe Field-Ion Microscopy. Materials Characterization. 2000;44(1-2):219-33. Wang L, Speer JG. Quenching and Partitioning Steel Heat Treatment. Metallography, Microstructure, and Analysis. 2013;2(4):268-81. Maresca F, Kouznetsova VG, Geers MGD. On the role of interlath retained austenite in the deformation of lath martensite. Modelling and Simulation in Materials Science and Engineering. 2014;22(4):045011. Allain SYP, Aoued S, Quintin-Poulon A, Gouné M, Danoix F, Hell J-C, et al. In Situ Investigation of the Iron Carbide Precipitation Process in a Fe-C-Mn-Si Q&P Steel. Materials (Basel). 2018;11(7):1087. Khan W, Tufail M, Chandio AD. Characterization of Microstructure, Phase Composition, and Mechanical Behavior of Ballistic Steels. Materials (Basel). 2022;15(6):2204. ElMeligy M, El-Bitar T. Strain Hardening and Stretch Formability Behavior of Triple Phase (TP) Steel Strips. Acta Metallurgica Slovaca. 2021;27(3):152-6. Dilmore M, Ruhlman JD, inventors; Ellwood National Forge Co, assignee. Eglin steel—a low alloy high strength composition. United States patent US 7,537,727. 2009 May 26. Catauro M, Tranquillo E, Dal Poggetto G, Pasquali M, Dell'Era A, Vecchio Ciprioti S. Influence of the Heat Treatment on the Particles Size and on the Crystalline Phase of TiO₂ Synthesized by the Sol-Gel Method. Materials (Basel). 2018;11(12):2364. Sadovnikov SI, Gusev AI. The Effect of Temperature on the Particle Sizes and the Recrystallization of Silver Sulfide Nanopowders. Physics of the Solid State. 2018;60(7):1308-15. Anthonysamy S, Ananthasivan K, Kaliappan I, Chandramouli V, Vasudeva Rao PR, Mathews CK, Jacob KT. Gibbs energies of formation of chromium carbides. Metallurgical and Materials Transactions A. 1996;27(7):1919-24. Iwai T, Takahashi I, Handa M. Gibbs free energies of formation of molybdenum carbide and tungsten carbide from 1173 to 1573 K. Metallurgical Transactions A. 1986;17(11):2031-4. Arribas M, Rana R, Lahaije C, Gómez X, Aranguren I, Pérez I. Design and Properties of 1000 MPa Strength Level Hot-Formed Steels Possessing Dual-Phase and Complex-Phase Microstructures. Materials Science Forum. 2018;941:352-7.
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Creation of extremely fine lath martensite combined with nano needle like structured carbides in ultra high strength (UHS) military Steel