Uniaxial creep behavior of V-4Cr-4Ti alloy

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We are undertaking a systematic study at Argonne National Laboratory to evaluate the uniaxial creep behavior of V-Cr-Ti alloys in a vacuum environment as a function of temperature in the range of 650-800 °C and at applied stress levels of 75-380 MPa. Creep strain in the specimens is measured by a linear-variable-differential transducer, which is attached between the fixed and movable pull rods of the creep assembly. Strain is measured at sufficiently frequent intervals during testing to define the creep strain/time curve. A linear least-squares analysis function is used to ensure consistent extraction of minimum creep rate, onset of tertiary creep and creep strain at the onset of tertiary creep. Creep test data, obtained at 650, 700, 725 and 800 °C, showed power-law creep behavior. Extensive analysis of the tested specimens is conducted to establish hardness profiles, oxygen content and microstructural characteristics. The data are also quantified by the Larson-Miller approach, and correlations are developed to relate time to rupture, onset of tertiary creep, times for 1% and 2% strain, exposure temperature and applied stress. © 2002 Elsevier Science B.V. All rights reserved.




Natesan, K., Soppet, W. K., & Purohit, A. (2002). Uniaxial creep behavior of V-4Cr-4Ti alloy. Journal of Nuclear Materials, 307311(1 SUPPL.), 585–590. https://doi.org/10.1016/S0022-3115(02)01014-0

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