Constitutive modeling for predicting peak stress characteristics during hot deformation of hot isostatically processed nickel-base superalloy

Hot flow behavior of hot isostatically processed experimental nickel-based superalloy is investigated over temperature and strain rate ranging from 1000–1200 °C and 0.001–1 s−1, respectively by carrying out constant true strain rate isothermal compression tests up to true strain of 0.69. True stress–true strain curves corrected for adiabatic temperature rise exhibited rapid strain hardening followed by flow softening behavior irrespective of temperature and strain rate regimes investigated, although anomalous flow behavior is observed at 1200 °C. Variation of peak flow stress with temperature is corroborated to the microstructural changes pertaining to the morphology and relative volume fraction of the phases present. From the experimental results, constitutive model incorporating the effects of strain rate, strain, and temperature is established to describe the hot flow behavior of investigated alloy. Dependence of peak flow stress on strain rate and temperature described by Zener–Hollomon (Z) parameter indicated increase in peak flow stress with Z. Additionally Cingara-Queen equation is employed to predict flow curve up to peak stress. The reliability of developed constitutive models is validated statistically and the results indicate reasonable agreement with experimental findings.

[1]  Y. Lin,et al.  Study of microstructural evolution during static recrystallization in a low alloy steel , 2009, Journal of Materials Science.

[2]  R. J.,et al.  I Strain Localization in Ductile Single Crystals , 1977 .

[3]  J. K. Chakravartty,et al.  Dynamic Recrystallization during Hot Deformation of 304 Austenitic Stainless Steel , 2013, Journal of Materials Engineering and Performance.

[4]  R. Singer,et al.  Creep properties of different γ′-strengthened Co-base superalloys , 2012 .

[5]  Y. Lin,et al.  Prediction of metadynamic softening in a multi-pass hot deformed low alloy steel using artificial neural network , 2008 .

[6]  T. Pollock,et al.  Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties , 2006 .

[7]  J. Jonas,et al.  Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions , 2014 .

[8]  H. Y. Li,et al.  Constitutive modeling for hot deformation behavior of ZA27 alloy , 2012, Journal of Materials Science.

[9]  Yu-hao Cao,et al.  Hot deformation behavior of Ti-15-3 titanium alloy: a study using processing maps, activation energy map, and Zener–Hollomon parameter map , 2012, Journal of Materials Science.

[10]  J. Jonas,et al.  Predicting the Critical Stress for Initiation of Dynamic Recrystallization , 2006 .

[11]  M. Aghaie-Khafri,et al.  Dynamic and metadynamic recrystallization of Hastelloy X superalloy , 2008, Journal of Materials Science.

[12]  Y. Honnorat,et al.  N18, Powder metallurgy superalloy for disks: Development and applications , 1993, Journal of Materials Engineering and Performance.

[13]  T. Byun,et al.  Temperature dependence of strain hardening and plastic instability behaviors in austenitic stainless steels , 2004 .

[14]  Akhtar S. Khan,et al.  A critical review of experimental results and constitutive models for BCC and FCC metals over a wide range of strain rates and temperatures , 1999 .

[15]  M. Jahazi,et al.  Deformation characteristics of isothermally forged UDIMET 720 nickel-base superalloy , 2005 .

[16]  Xishan Xie,et al.  Hot working characteristics of nickel-base superalloy 740H during compression , 2013 .

[17]  Woei-Ren Wang,et al.  Hot deformation characteristics and strain-dependent constitutive analysis of Inconel 600 superalloy , 2012, Journal of Materials Science.

[18]  M. Fu,et al.  Hot deformation behavior of the post-cogging FGH4096 superalloy with fine equiaxed microstructure , 2011 .

[19]  Z. Gao,et al.  Mathematical modeling of the hot-deformation behavior of superalloy IN718 , 1999 .

[20]  Wei Xu,et al.  Constitutive Modeling of Dynamic Recrystallization Kinetics and Processing Maps of Solution and Aging FGH96 Superalloy , 2013, Journal of Materials Engineering and Performance.

[21]  Xianghua Liu,et al.  Processing map for hot working of Inconel 718 alloy , 2011 .

[22]  Raghavan Srinivasan,et al.  Microstructural modeling of metadynamic recrystallization in hot working of IN 718 superalloy , 2000 .

[23]  M. Faccoli,et al.  Study of hot deformation behaviour of 2205 duplex stainless steel through hot tension tests , 2013, Journal of Materials Science.

[24]  H. Mcqueen,et al.  Dynamic Softening Mechanisms in 304 Austenitic Stainless Steel , 1990 .

[25]  Zhigang Wu,et al.  Investigation on hot workability characteristics of Inconel 625 superalloy using processing maps , 2012, Journal of Materials Science.

[26]  Zhengyi Jiang,et al.  Modelling of the hot deformation behaviour of a titanium alloy using constitutive equations and artificial neural network , 2014 .

[27]  Jiao Deng,et al.  Hot deformation behavior and processing map of a typical Ni-based superalloy , 2014 .

[28]  Jian-xin Dong,et al.  A new prediction model of steady state stress based on the influence of the chemical composition for nickel-base superalloys , 2010 .

[29]  Amit Kumar Maheshwari,et al.  Modified Johnson–Cook material flow model for hot deformation processing , 2010 .

[30]  B. Tang,et al.  Static recrystallization simulations by coupling cellular automata and crystal plasticity finite element method using a physically based model for nucleation , 2014, Journal of Materials Science.

[31]  Y. Lin,et al.  A critical review of experimental results and constitutive descriptions for metals and alloys in hot working , 2011 .

[32]  John J. Jonas,et al.  A one-parameter approach to determining the critical conditions for the initiation of dynamic recrystallization , 1996 .

[33]  B. Tang,et al.  Cellular automata modeling of static recrystallization based on the curvature driven subgrain growth mechanism , 2013, Journal of Materials Science.

[34]  H. Fu,et al.  Characterization of hot deformation behavior of Haynes230 by using processing maps , 2009 .

[35]  T. Sheppard,et al.  Modelling of static recrystallisation by the combination of empirical models with the finite element method , 2003 .

[36]  H. Mcqueen,et al.  New formula for calculating flow curves from high temperature constitutive data for 300 austenitic steels , 1992 .

[37]  Y. Lin,et al.  Constitutive models for high-temperature flow behaviors of a Ni-based superalloy , 2014 .

[38]  K. Dehghani,et al.  Modeling the initiation of dynamic recrystallization using a dynamic recovery model , 2011 .

[39]  Zhen Lu,et al.  Hot deformation behavior and processing map of a γ′-hardened nickel-based superalloy , 2014 .