Numerical Analysis and Experimental Validation of Temperature Induced Creep and Fatigue life of Inconel 740H and Haynes 282 Paper No.: 2023-JL-04 Section Research Papers

##plugins.themes.academic_pro.article.main##

RAMAKRISHNAN P A
AJITH RAMESH

Abstract

The Nickel based super-alloys have gained lot of importance in the last decade or so owing to their applications in areas like power generation, military aircrafts, marine propulsion and nuclear reactors. Utilities worldwide are facing increased demand for additional electricity, reduced plant emissions and greater plant efficiency. To meet this challenge, it requires materials with very high temperature creep and fatigue strength and better coal ash corrosion resistance. For the realization of advanced ultra-supercritical (A-USC) thermal plant operating at service temperature and pressure about 700oC to 760oC and 24 MPa respectively, the use of Nickel based super alloys are indispensable. The two A-USC qualified alloys include Inconel 740H and Haynes 282. This study focus on improving the creep and fatigue life of the A-USC qualified alloys by predicting the optimum operating parameters through finite element modeling for temperature induced creep and fatigue analysis of the said A-USC alloys. The influence of various operating parameters like temperature, machining induced residual stress, surface finish, creep duration and fatigue loadings on output parameters like creep strain, elongation, creep and fatigue life were studied. Abaqus/Standard was used for the numerical simulation. Using ANOVA, the most influencing operating parameters were identified. It was observed that the machining induced residual stress and surface finish have greater influence on creep and fatigue life of alloys. Alloy with lower value of machining induced residual stress and better surface finish will have better creep and fatigue life. The proper validation of model was performed by comparing the results with relevant literature.

##plugins.themes.academic_pro.article.details##

Author Biography

RAMAKRISHNAN P A, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India.

Corresponding Author: Mr. P.A. Ramakrishnan, Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India.
Email: sriram26may@gmail.com, r_ajith@cb.amrita.edu

How to Cite
P A, R., & AJITH RAMESH. (2023). Numerical Analysis and Experimental Validation of Temperature Induced Creep and Fatigue life of Inconel 740H and Haynes 282: Paper No.: 2023-JL-04. ARAI Journal of Mobility Technology, 3(4), pp.803–819. https://doi.org/10.37285/ajmt.3.4.4

References

  1. Robert Purgert et al, “Materials for Advanced Ultra-supercritical (A-USC) Steam Turbines”, US Department of Energy National Energy Technology, 2016, pp.8-40
  2. Ch. Visweswara Rao et.al., “Dynamic strain aging, deformation and fracture behaviour of the nickel base superalloy Inconel 617, Material Science and Engineering, Elsevier, 2018, pp. 1-20
  3. David A. Woodford, “Performance-based creep strength and intrinsic ductility for a cast nickel-based superalloy”, Mat. Hi. Temp., Taylor and Francis, 2018, pp. 1-12
  4. Sun. F et.al., “Creep deformation and rupture mechanism of an advanced wrought Ni-Fe based superalloy for 700 oC class A-USC steam turbine rotor application”, Elsevier, 2016, pp. 389-401
  5. Su Yong et.al., “Microstructure evolution and its effect on creep behavior of single crystal Ni-based superalloys with various orientations”, Elsevier, 2016, pp. 243-254
  6. Louis Thebaud et.al. “Is there an optimal grain size for creep resistance in Ni-based disk superalloys?”, Elsevier, 2016, pp. 2017, pp. 1-19
  7. Kyeong Yong Shin et.al, “Transition of creep damage region in dissimilar welds between Inconel 740H Ni-based superalloy and P92 ferritic/martensitic steel”, Elsevier, 2018, pp. 1-24
  8. Young-Kwang Kim et.al, “An Intermediate Temperature Creep Model for Ni-based Superalloys”, Int. J. Plasticity, Elsevier, 2015, pp. 1-20
  9. Ajith Ramesh, C.S. Sumesh, P.M. Abhilash (2015) Finite element modelling of orthogonal machining of hard to machine materials. Int. J. Machining and Machinability of Materials, Vol. 17:543-565.
  10. M. Demiral, T. Leemet, M. Hokka, V. T. Kuokkala, A. Roy, V.V. Silberschmidt (2011) Finite-Element Simulations of Split-Hopkinson Test of Ti-Based Alloy. Advanced Materials Research, 223: 296 – 303.
  11. Marcos Rodriguez-Millan, Jose Diaz-Alvarez, Richard Bernier, Jose Luis Cantero, Alexis Rusinek, Maria Henar Miguelez (2017) Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and its Application to Machining Simulation. MDPI 1 – 17.
  12. Josef Betten, “Creep Mechanics”, 2nd Ed., Springer, 2004
  13. INCONEL ALLOY 740H–Data sheet (2017) Special Metals – PCC Company Inc.
  14. HAYNES 282 ALLOY–Data Sheet (2017) Haynes International Inc.
  15. Bao and Wierzbicki (2004), On fracture locus in the equivalent strain and stress-triaxiality space. In. J. Mechanical Sciences 46:81–98.