PSI - Issue 14

K.C. Sahoo et al. / Procedia Structural Integrity 14 (2019) 60–67 K. C. Sahoo et.al./ Structural Integrity Procedia 00 (2018) 000 – 000 K. C. Sahoo et.al./ Structural Integrity Procedia 00 (2018) 000 – 000 K. C. Sahoo et.al./ Structural Integrity Procedia 00 (2018) 000 – 000 K. C. Sahoo et.al./ Structural Integrity Procedia 00 (2018) 000 – 000

(2) (2) (2) (2)

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Where Where is the steady state creep rate and A, n are the Norton’s law is the steady state creep rate and A, n are the Norton’s law is the steady state cre p rat and A, n are the Norton’s law is th steady state cre p rate and A, n are the Norton’s law coefficient of stress vs. rupture life plot. The details for evaluating the different parameters and their physical significance has already been described by Goyal etal .[ S. Goyal., 2014]. The equation used for calculating creep strain based on continuum damage mechanics. (3) coefficient of stress vs. rupture life plot. The etails for valuating the different parameters and their physical significance has already been escribed by Goyal etal .[ S. Goyal., 2014]. The equation used for calculating creep strain based on continuum damage mechanics. (3) Wher coeff ci nt of stress vs. rupture life plot. The details for evaluating the different parameters and their physical significance has already been described by Goyal etal .[ S. Goyal., 2014]. The equation used for calculating creep strain based on continuum damage mechanics. (3) Where coefficient of stress vs. r pture lif plot. The etails for evaluating the different parameters and their physical significance has already been escribed by Goyal etal .[ S. Goyal., 2014]. The equation used for calculating creep strain based on continuum damage mechanics. (3) coefficient. , , are the coefficient. , , are the coefficient. , , are the coefficient. , , are the

Fig.2 Geometry of smooth specimen used for FE-analysis along with specified boundary condition Fig.2 Geometry of smooth specimen used for FE-analysis along with specified boundary condition Fig.2 Geometry of smooth specimen used for FE-analysis along with specified boundary condition Fig.2 Geometry of smooth specimen used for FE-analysis along with specified boundary condition

3.0 RESULTS AND DISCUSSION: 3.1 Creep deformation: 3.0 RESULTS AND DISCUSSION: 3.1 Creep deformation: 0 RESULTS AND DISCUSSION: 3.1 Creep deformation: 3.0 RESULTS AND DISCUSSION: 3.1 Creep deformation:

Creep tests were conducted at 923 K, 973 K and 1023 K over a wide range of stresses. Fig.3 shows the variations of creep strain% with creep exposure of the material at three different temperatures. Creep deformation consists of a short instantaneous strain on loading, a short transient stage and a marginal stationary stage and followed by prolonged tertiary stage. Creep tests were conducted at 923 K, 973 K and 1023 K over a wide range of stress s. Fig.3 shows the variations of creep str in% with creep exposure of the material at thr e diff re t te peratures. Creep deformation consists of a short instantaneous strain on loading, a short transient stage and a marginal stationary stage and followed by prolonged tertiary stage. Creep tests were conducted at 923 K, 973 K and 1023 K over a wide range of stresses. Fig.3 shows the variations of creep strain% with creep exposure of the material at three different temperatures. Creep deformation consists of a short instantaneous strain on loading, a short transient stage and a marginal stationary stage and followed by prolonged tertiary stage. Creep tests were conducted at 923 K, 973 K and 1023 K over a wide range of stresses. Fig.3 shows the variations of creep strain% with creep exposure of the material at three diff re t te peratures. Creep deformation consists of a short instantaneous strain on loading, a short transient stage and a marginal stationary stage and followed by prolonged tertiary stage.

Fig.3 Uniaxial creep curves at different temperatures (a) 923 K, (b) 973 K, (c) 1023 K Fig.3 Uniaxial creep curves at different temperatures (a) 923 K, (b) 973 K, (c) 1023 K

Fig.3 Uniaxial creep curves at different temperatures (a) 923 K, (b) 973 K, (c) 1023 K