Abstract
The structure and mechanical properties of austenitic 08KhN10T steel subjected to equal-channel angular pressing (ECAP) at room temperature (ɛ = 3.2) and subsequent heating are studied. In the course of ECAP, the steel undergoes a martensitic transformation; the martensite content reaches 45%. Upon heating, martensite (ferrite) transforms into austenite. The partly submicrocrystalline oriented structure of the 08Kh18N10T steel in the austenitic (55%)-martensitic (45%) state (formed upon ECAP) provides its high strain hardening (σ0.2 = 1315 N/mm2), as compared to the initial state (σ0.2 = 250 N/mm2), and high plasticity δ = 11%. After heating to 550°C, the steel has a predominantly submicrocrystalline austenitic (80%)-ferritic (20%) structure, σ0.2 = 1090 N/mm2, and δ = 11%.
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Original Russian Text © S.V. Dobatkin, O.V. Rybal’chenko, G.I. Raab, 2006, published in Metally, 2006, No. 1, pp. 48–54.
This work was reported at the First All-Russia Conference on Nanomaterials held in Moscow at the Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, in December 2004.
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Dobatkin, S.V., Rybal’chenko, O.V. & Raab, G.I. Formation of a submicrocrystalline structure in austenitic 08Kh18N10T steel during equal-channel angular pressing followed by heating. Russ. Metall. 2006, 42–48 (2006). https://doi.org/10.1134/S0036029506010083
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DOI: https://doi.org/10.1134/S0036029506010083