This paper presents a review of creep deformation and rupture mechanisms of low Cr-Mo alloy for the development of its creep damage constitutive equations under lower stress. The most popular KRH (Kachanov-Robatnov-Hayhurst) formulation was not necessarily developed and calibrated for low stress and can not depict the creep strain accurately under multi-axial state of stress due to the three-dimensional generalization method used. This paper summarizes a critical analysis on the cavity nucleation and growth, and the deformation mechanisms and creep damage evolution characteristics at the temperature ranging for 723 K to 923 K (450 °C to 650 °C), particularly under low stress level (0.2-0.4ογ) in order to form the physical base for the development of creep damage constitutive equation. Moreover, it covers the influence of the stress level, states of stress, and the failure criterion.
|Number of pages||10|
|Journal||Journal of communication and computer|
|Publication status||Published - 30 Sep 2013|
Xu, Q., Xu, Q., Lou, Z., & Barrans, S. (2013). A Review of Creep Deformation and Rupture Mechanisms of Cr-Mo Alloy for the Development of Creep Damage Constitutive Equations under Lower Stress. Journal of communication and computer , 2013(9), 1219-1228. http://www.davidpublisher.org/index.php/Home/Article/index?id=6828.html