Effect of Tempering on Phase Transformations in Low-Alloy Steel with 1.6%Si

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Аннотация

Low temperature tempering of a 0.53%C–1.6%Si–0.9%Mn–0.76%Cr–0.14%V–0.05%Nb steel provides combination of high yield stress σ0.2=1890 MPa with elongation-to-failure δ=6% and Charpy V-notch (CVN) impact energy of 11 J/cm2 due to precipitation of non-stoichiometric η-carbide Fe2C. Silicon suppresses precipitation of para-equilibrium cementite both from martensite and retained austenite. Orthoequilibrium cementite precipitate upon tempering at 500°С providing combination of σ0.2=1360 MPa with δ=9% and CVN impact energy of 18 J/cm2.

Авторлар туралы

V. Dudko

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy; Belgorod State University

Хат алмасуға жауапты Автор.
Email: dudko@bsu.edu.ru
Ресей, Moscow; Belgorod

D. Yuzbekova

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy; Belgorod State University

Email: dudko@bsu.edu.ru
Ресей, Moscow; Belgorod

M. Erokhin

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy

Email: dudko@bsu.edu.ru

Academician of the RAS

Ресей, Moscow

S. Gaidar

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy

Email: dudko@bsu.edu.ru
Ресей, Moscow

R. Kaibyshev

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy

Email: dudko@bsu.edu.ru
Ресей, Moscow

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