Mechanical Properties of Martensitic Stainless Steel (AISI420) Subjected to Conventional and Cryogenic Treatments
Engineering and Technology Journal,
2020, Volume 38, Issue 8, Pages 1096-1105
AbstractMartensitic Stainless Steel (AISI420) MSS are vastly used because of their properties conventional which mix good mechanical and corrosion resistance. Cryogenic up to -196°C for different soaking time and heat treatments at (1000,500,200°C) for 15 minutes is one of the ways that used to enhance mechanical properties of these steels by means transformation of retained austenite, deformation regarding martensite then carbide refinement. the result showed an increase in tensile strength of samples that were treated cryogenically and tempered at 500°C was 933 (MPa) compared to samples that just treated conventionally in austenitizing and tempering at the same temperature that was 880 (MPa). The hardness values increased considerably to 414HV and 321 HV for the specimen that tempered at 200°C and 500°C respectively, precipitation of small carbides was observed that this is responsible for the improvement in the mechanical properties of the material.
 G. Prieto, J. Ipiña and W. Tuckart. “Cryogenic treatments on AISI 420 stainless steel: microstructure and mechanical properties,” Materials Science and Engineering, Vol. 605, pp.236-243, 2014.  G. Prieto, W. Tuckart and J. Ipiña, “Influence of a cryogenic treatment on the fracture toughness of an AISI 420 Martenstic,” Vol. 51, No. 4, pp. 591, 2016.
 L. Barlow and M. Du Toit, “Effect of austenitizing heat treatment on the microstructure and hardness of martensitic stainless steel AISI 420,” Journal of Materials Engineering and Performance, Vol. 21, No. 7, pp. 1327–1336, 2011
 A. Isfahany, H. Saghafian, and G. Borhani, “The effect of heat treatment on mechanical properties and corrosion behavior of AISI420 martensitic stainless steel,” Journal of Alloys and Compounds, Vol. 509, No. 9, pp.3931–3936, 2011.  A. Khazaei and A. Mollaahmadi, “Rapid tempering of martensitic stainless steel AISI420: microstructure, mechanical and corrosion properties,” Journal of Materials Engineering and Performance, Vol. 26, No. 4, pp. 1626–1633, 2017.  D. Nadig, P. Shivakumar, S. Anoop, K. Chinmay, P. Divine, and H.Harsha, “Effects of cryogenic treatment on the wear properties of brake discs,” IOP Conference Series: Materials Science and Engineering, Materials Science and Engineering. Vol. 171, 2017.
 V. Macro and C. Andrea, “Stainless steels,” Lucefin S.p.A. 1-25040 Italy, 2014.
 C. Scheuera, R. Fragaa, R. Cardosoa, S. Brunattoa, “Effects of heat treatment conditions on microstructure and mechanical properties of AISI 420 steel,” 21º CBECIMAT - Congresso Brasileiro de Engenharia e Ciência dos Materiais 09 a 13, Cuiabá, MT, Brasil, 2014.  L. Ramos, L. Simoni, R. Mielczarski, M. Vega, R. Schroeder, and C. Malfatti, “Tribocorrosion and electrochemical behavior of DIN 1.4110 martensitic stainless steels after cryogenic heat treatment,” Materials Research, Vol. 20, No. 2, pp.460–468, 2017.
 E. E. Reber, R .L. Michell, and C. J. Carter, “Oxygen absorption in the earth's atmosphere,” Aerospace Corp., Los. Angeles, CA, Tech. Rep. TR-0200 (4230-46-)-3, 1988.
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