Many weapons and mechanical parts such as bullet shells, jet engine covers, bulletproof armor shells operated in harsh conditions require durability when used and good flexibility when forming. Many countries have used steel with phase transition effects due to plastic deformation - TRIP effect (Transformation Induced Plasticity) to replace low carbon steel, high-strength low-alloy steel fabricating them. The paper presents research on the technology of metallurgy of a CMnSiAl steel grade from sponge iron materials and application of mechanical-thermal technology to create small particles and organize three phases: Ferrite, Bainite, residual Austenite to stabilize and increase plasticity. The results show that the impurity content is low, S% is less than 0.025%; magnitude of small ferrite particles below 20μm, ratio of residual austenitic fγ = 6.39%. Mechanical properties: durable limit σb on 590 MPa, yield limit σc over 390 MPa, ratio σb/σc> 1.5 and relative elongation δ50 over 28%. Research results for the prospect of applying this steel grade in the manufacture of some defense products, instead imported materials.
A. T. Hoang, D. N. Nguyen, and V. V. Pham, “Heat Treatment Furnace For Improving The Weld Mechanical Properties: Design and Fabrication,” Int. J. Mech. Eng. Technol., vol. 9, no. 6, pp. 496–506, 2018.
A. T. Hoang, L. H. Nguyen, and D. N. Nguyen, “A Study of Mechanical Properties and Conductivity Capability of CU-9NI-3SN ALLOY,” Int. J. Appl. Eng. Res., vol. 13, no. 7, pp. 5120–5126, 2018.
M. K. Pham, D. N. Nguyen, and A. T. Hoang, “Influence of Vanadium Content on the Microstructure and Mechanical Properties of High-Manganese Steel,” Int. J. Mech. Mechatronics Eng., vol. 18, no. 2, pp. 141–147, 2018.
T. N. Le, M. K. Pham, A. T. Hoang, and D. N. Nguyen, “Microstructures and elements distribution in the transition zone of carbon steel and stainless steel welds,” J. Mech. Eng. Res. Dev., vol. 41, no. 3, pp. 27–31, 2018.
X. D. Pham, A. T. Hoang, and D. N. Nguyen, “A Study on the Effect of the Change of Tempering Temperature on the Microstructure Transformation of Cu-Ni-Sn Alloy,” Int. J. Mech. Mechatronics Eng., vol. 18, no. 4, pp. 27–34, 2018.
D. N. Nguyen, A. T. Hoang, M. T. Sai, M. Q. Chau, and V. V. Pham, “Effect of Sn component on properties and microstructure Cu-Ni-Sn alloys,” J. Teknol., vol. 80, no. 6, pp. 43–51, 2018.
A. T. Hoang, V. V. Le, A. X. Nguyen, and D. N. Nguyen, “A STUDY ON THE CHANGES IN MICROSTRUCTURE AND MECHANICAL PROPERTIES OF MULTI-PASS WELDING BETWEEN 316 STAINLESS STEEL AND LOW-CARBON STEEL,” J. Adv. Manuf. Technol., vol. 12, no. 02, 2018.
T.Nhung Le, M.Khanh Pham, A. Tuan Hoang, T.N.Mai Bui, D.Nam Nguyen; Microstructure change for multi-pass welding between austenitic stainless steel and carbon steel; Journal of Mechanical Engineering Research & Develoments, 41(2) (2018) 97-102.
X. D. Pham, A. T. Hoang, D. N. Nguyen, and V. V Le, “Effect of Factors on the Hydrogen Composition in the Carburizing Process,” Int. J. Appl. Eng. Res., vol. 12, no. 19, pp. 8238–8244, 2017.
Alharbi, F., Gazder, A. A., Kostryzhev, A., De Cooman, B. C. & Pereloma, E., “The effect of processing parameters on the microstructure and mechanical properties of low-Si transformation-induced plasticity steels”, Journal of Materials Science, 49 (7), 2960-2974, 2014.
Antonio Augusto Gorni, “Steel forming and heat treating Handbook”, São Vicente SP-Brazil, 2015.
Ashok Kumar Srivastava, G. Jha, N. Gope, S.B. Singh, “Effect of heat treatment on microstructure and mechanical properties of cold rolled C–Mn–Si TRIP-aided steel”, Materials Characterization 57 (2006) 127–135.
ASTM A1079-13: “Standard Specification for Steel Sheet, Complex Phase (CP), Dual Phase (DP) and Transformation Induced Plasticity (TRIP), Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
Blanka Gajda, Andrzej K. Lis, “Thermal processing of CMnAlSi steel at (α+γ) temperature range”, Journal of Achievements in Materials and Manufacturing Engineering - Volume 18 - Issue 1-2, Setember-October 2006.
Mahmoud Y. Demeri, “Advanced High Strength Steels: Science, Technology, and Applications”, ASM International, 2013, page 117.
Padmanava Sadhukhan, “Computational Design and Analysis of High Strength Austenitic TRIP Steels for Blast Protection Applications”, A Dissertation for the Degree “Doctor of Philosophy”, Field of Materials Science and Engineering, Northwestern University, December 2008.
S. Chatterjee and H. K. D. H. Bhadeshia, “Transformation-induced plasticity assisted steels: stress or strain affected martensitic transformation?”, Materials Science and Technology, No 9 - Vol 23, 2007.
Zicheng Zhang, Yanmei Li, Ken-ichi Manabe, and Fuxian Zhu, “Effect of Heat Treatment on Microstructure and Mechanical Propertiesof TRIP Seamless Steel Tube”, Materials Transactions, Vol. 53, No. 5 (2012) pp. 833- 837.
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