Effect of precipitates on static and fatigue strength of a severely forged aluminum alloy 1570C

Open School-Conference of NIS Countries Ultrafine Grained and Nanostructured Materials

Avtokratova, E.V.^1 ; Sitdikov, Oleg^1 ; Latypova, O.E.^1 ; Markushev, M.V.^1 ; Linderov, M.L.^2 ; Merson, D.L.^2 ; Vinogradov, Yu A.^2,3

Institute for Metals Superplasticity Problems, Russian Academy of Sciences, 39 Khalturin st., Ufa

450001, Russia^1

Institute of Advanced Technologies, Togliatti State University, 14 Belorusskaya st., Togliatti

445020, Russia^2

Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology - NTNU, Trondheim

N-7491, Norway^3

关键词: Different sizes;    Equivalent strains;    Fatigue properties;    Fatigue strength;    Forged aluminum;    Isothermal forging;    Severe Deformation;    Temperature decrease;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012038/pdf
DOI  :  10.1088/1757-899X/447/1/012038

来源: IOP

【 摘 要 】

Bulk billets from commercial ingots of the alloy 1570C with different size of aluminides of transition metals were subjected to severe deformation up to the equivalent strain e∼24 via multi-step isothermal forging (MIF) with an inter-step temperature decrease from 325 to 175 °C. The high potential of MIF to produce UFG billets with enhanced balance of static and fatigue properties has been demonstrated. The role of precipitates of aluminides of transition metals and regimes of the MIF in the structure of the alloy and for the control of properties is discussed.