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Title: Tailoring the Properties of a Ni-Based Superalloy via Modification of the Forging Process: an ICME Approach to Fatigue Performance

Journal Article · · Integrating Materials and Manufacturing Innovation
 [1];  [2];  [3];  [4]; ORCiD logo [2]
  1. Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States); National Energy Technology Lab. (NETL), Albany, OR (United States)
  2. Purdue Univ., West Lafayette, IN (United States)
  3. Rolls-Royce plc, Derby (United Kingdom)
  4. Illinois Inst. of Technology, Chicago, IL (United States)

Traditionally, material design and property modifications are usually associated with compositional changes. Yet, subtle changes in the manufacturing process parameters can also have a dramatic effect on the resulting material properties. In this work, an integrated computational materials engineering (ICME) framework is adopted to tailor the fatigue performance of a Ni-based superalloy, RR1000. An existing fatigue model is used to identify microstructural features that promote enhanced fatigue life, namely a uniform, fine grain size distribution, random orientation, a distinct grain boundary distribution (specifically high twin boundary density and limited low-angle grain boundaries). A deformation mechanism map and process models for grain boundary engineering of RR1000 are used to identify the optimal thermo-mechanical processing parameters to realize these desirable microstructural features. For validation, small-scale forgings of RR1000 were produced and heat-treated to attain fine grain and coarse grain microstructures that represent the conventionally processed and grain boundary engineered (GBE) conditions, respectively. For each of the four microstructural variants of RR1000, the twin density and grain size were characterized and were in agreement with the desired microstructural attributes. In order to validate the deformation mechanisms and fatigue behavior of the material, high-resolution digital image correlation was performed to generate strain maps relative to the microstructural features. The high density of twin boundaries was confirmed to inhibit the length of slip bands, which is directly attributed to extended fatigue life. Thus, this study demonstrated the successful role of models, both process and performance, in the design and manufacture of Ni-based superalloy disk forgings.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE); National Science Foundation (NSF); Rolls-Royce Corporation
Grant/Contract Number:
CMMI 13-34664; 13-34998
OSTI ID:
1765264
Alternate ID(s):
OSTI ID: 1784734
Report Number(s):
NA
Journal Information:
Integrating Materials and Manufacturing Innovation, Vol. 6, Issue 4; ISSN 2193-9764
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (68)

Strengthening Materials by Engineering Coherent Internal Boundaries at the Nanoscale journal April 2009
Fatigue strain mapping via digital image correlation for Ni-based superalloys: The role of thermal activation on cube slip journal May 2017
Plastic strain localization and fatigue micro-crack formation in Hastelloy X journal January 2013
Twinning-related grain boundary engineering journal August 2004
Twin boundaries as crack nucleation sites journal January 2005
High-cycle fatigue of nickel-based superalloy ME3 at ambient and elevated temperatures: Role of grain-boundary engineering journal December 2005
A physically based fatigue model for prediction of crack initiation from persistent slip bands in polycrystals journal January 2011
Creep deformation of single crystal superalloys—modelling the crystallographic anisotropy journal October 1990
Microstructure based fatigue life prediction framework for polycrystalline nickel-base superalloys with emphasis on the role played by twin boundaries in crack initiation journal April 2016
Analysis of grain boundary networks and their evolution during grain boundary engineering journal February 2003
Energy of slip transmission and nucleation at grain boundaries journal January 2011
The relation between polycrystal deformation and single-crystal deformation journal May 1970
A new class of metrics for the macroscopic crystallographic space of grain boundaries journal May 2009
The influence of grain and tlin boundaries in fatigue cracking journal September 1972
The role of texturing and recrystallization during grain boundary engineering of Ni-based superalloy RR1000 journal February 2016
Grain boundary characterization and energetics of superalloys journal October 2010
The Mechanism of Plastic Deformation of Crystals. Part I. Theoretical journal July 1934
DREAM.3D: A Digital Representation Environment for the Analysis of Microstructure in 3D journal April 2014
Lifing the thermo-mechanical fatigue (TMF) behaviour of the polycrystalline nickel-based superalloy RR1000 journal January 2014
A theory of the fracture of metals journal October 1957
NIH Image to ImageJ: 25 years of image analysis journal June 2012
Metrology in a scanning electron microscope: theoretical developments and experimental validation journal August 2006
Crack nucleation using combined crystal plasticity modelling, high-resolution digital image correlation and high-resolution electron backscatter diffraction in a superalloy containing non-metallic inclusions under fatigue journal May 2016
Applications of digital-image-correlation techniques to experimental mechanics journal September 1985
Ni-based superalloys for turbine discs journal January 1999
A model of extrusions and intrusions in fatigued metals I. Point-defect production and the growth of extrusions journal August 1981
Modeling the effect of thermal–mechanical processing parameters on the density and length fraction of twin boundaries in Ni-base superalloy RR1000 journal October 2015
Modelling and prediction of the stress rupture behaviour of single crystal superalloys journal April 2001
Microstructure-sensitive modeling of polycrystalline IN 100 journal October 2008
Grain growth behaviour during near-γ′ solvus thermal exposures in a polycrystalline nickel-base superalloy journal May 2013
On the unified view of the contribution of plastic strain to cyclic crack initiation: Impact of the progressive transformation of shear bands to persistent slip bands journal February 2015
The stress field of an array of parallel dislocation pile-ups: Implications for grain boundary hardening and excess dislocation distributions journal August 2010
Modifications to the microstructural topology in f.c.c. materials through thermomechanical processing journal May 2000
Microstructural and processing factors influencing the formation of annealing twins journal November 2009
Effects of thermo-mechanical processing parameters on the special boundary configurations of commercially pure nickel journal December 2009
Secondary Recrystallization in Copper journal August 1949
A stored energy criterion for fatigue crack nucleation in polycrystals journal November 2014
Mechanism of twinning-induced grain boundary engineering in low stacking-fault energy materials journal November 1999
Effect of annealing twins on crack initiation under high cycle fatigue conditions journal December 2012
High-cycle fatigue of nickel-base superalloy René 104 (ME3): Interaction of microstructurally small cracks with grain boundaries of known character journal May 2007
Crystallographic fatigue crack initiation in nickel-based superalloy René 88DT at elevated temperature journal December 2009
A Dislocation Model for Fatigue Crack Initiation journal March 1981
Applications for grain boundary engineered materials journal February 1998
Comparative study of high-temperature grain boundary engineering of two powder-processed low stacking-fault energy Ni-base superalloys journal April 2016
Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties journal March 2006
An investigation of the failure mechanisms in high temperature materials subjected to isothermal and anisothermal fatigue and creep conditions journal January 2011
Deformation from twin-boundary stresses and the role of texture: Application to fatigue journal July 1994
A model of extrusions and intrusions in fatigued metals II. Surface roughening by random irreversible slip journal August 1986
Dependence of intergranular fatigue cracking on the interactions of persistent slip bands with grain boundaries journal January 2003
The role of grain boundaries on fatigue crack initiation – An energy approach journal May 2011
Distortion Correction Protocol for Digital Image Correlation after Scanning Electron Microscopy: Emphasis on Long Duration and Ex-Situ Experiments journal July 2017
The Deformation and Ageing of Mild Steel: III Discussion of Results journal September 1951
Effects of deformation behavior on fatigue fracture surface morphology in a nickel-base superalloy journal April 2004
On the formation of fatigue cracks at twin boundaries journal July 1964
Microstructure-sensitive extreme value probabilities for high cycle fatigue of Ni-base superalloy IN100 journal March 2010
Implementation and verification of a microstructure-based capability for modeling microcrack nucleation in LSHR at room temperature journal March 2015
Grain boundary engineering of powder processed Ni-base superalloy RR1000: Influence of the deformation parameters journal March 2015
Study of annealing twins in fcc metals and alloys journal November 1990
Survey of computed grain boundary properties in face-centered cubic metals: I. Grain boundary energy journal August 2009
Bayesian uncertainty quantification and propagation for validation of a microstructure sensitive model for prediction of fatigue crack initiation journal August 2017
Fatigue Crack Initiation In WASPALOY at 20 °C journal May 2007
An energy-based microstructure model to account for fatigue scatter in polycrystals journal March 2011
Hierarchical crystal plasticity FE model for nickel-based superalloys: Sub-grain microstructures to polycrystalline aggregates journal March 2015
Twin boundaries: Strong or weak? journal November 2008
Self-Assembled Nanoparticle Surface Patterning for Improved Digital Image Correlation in a Scanning Electron Microscope journal March 2013
Slip transfer and plastic strain accumulation across grain boundaries in Hastelloy X journal June 2012
High resolution mapping of strain localization near twin boundaries in a nickel-based superalloy journal October 2015
The Influence of the Starting Grain Size during High-Temperature Grain Boundary Engineering of Ni-Base Superalloy RR1000 conference January 2016