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Title: New Mechanistic Models of Long Term Evolution of Microstructure and Mechanical Properties of Nickel Based Alloys

Abstract

The report describes the development of a discrete element method (DEM) based modeling approach to quantitatively predict deformation and failure of typical nickel based superalloys. A series of experimental data, including microstructure and mechanical property characterization at 600°C, was collected for a relatively simple, model solid solution Ni-20Cr alloy (Nimonic 75) to determine inputs for the model and provide data for model validation. Nimonic 75 was considered ideal for this study because it is a certified tensile and creep reference material. A series of new DEM modeling approaches were developed to capture the complexity of metal deformation, including cubic elastic anisotropy and plastic deformation both with and without strain hardening. Our model approaches were implemented into a commercially available DEM code, PFC3D, that is commonly used by engineers. It is envisioned that once further developed, this new DEM modeling approach can be adapted to a wide range of engineering applications.

Authors:
 [1];  [1];  [2]
  1. Oregon State Univ., Corvallis, OR (United States)
  2. Univ. of California, Riverside, CA (United States)
Publication Date:
Research Org.:
Oregon State Univ., Corvallis, OR (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1437100
Report Number(s):
DOE-OR-OSU-FE24065
DOE Contract Number:  
FE0024065
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE; Discrete Element Method; Plastic Deformation; Elastic Deformation; Anisotropy

Citation Formats

Kruzic, Jamie J., Evans, T. Matthew, and Greaney, P. Alex. New Mechanistic Models of Long Term Evolution of Microstructure and Mechanical Properties of Nickel Based Alloys. United States: N. p., 2018. Web. doi:10.2172/1437100.
Kruzic, Jamie J., Evans, T. Matthew, & Greaney, P. Alex. New Mechanistic Models of Long Term Evolution of Microstructure and Mechanical Properties of Nickel Based Alloys. United States. doi:10.2172/1437100.
Kruzic, Jamie J., Evans, T. Matthew, and Greaney, P. Alex. Tue . "New Mechanistic Models of Long Term Evolution of Microstructure and Mechanical Properties of Nickel Based Alloys". United States. doi:10.2172/1437100. https://www.osti.gov/servlets/purl/1437100.
@article{osti_1437100,
title = {New Mechanistic Models of Long Term Evolution of Microstructure and Mechanical Properties of Nickel Based Alloys},
author = {Kruzic, Jamie J. and Evans, T. Matthew and Greaney, P. Alex},
abstractNote = {The report describes the development of a discrete element method (DEM) based modeling approach to quantitatively predict deformation and failure of typical nickel based superalloys. A series of experimental data, including microstructure and mechanical property characterization at 600°C, was collected for a relatively simple, model solid solution Ni-20Cr alloy (Nimonic 75) to determine inputs for the model and provide data for model validation. Nimonic 75 was considered ideal for this study because it is a certified tensile and creep reference material. A series of new DEM modeling approaches were developed to capture the complexity of metal deformation, including cubic elastic anisotropy and plastic deformation both with and without strain hardening. Our model approaches were implemented into a commercially available DEM code, PFC3D, that is commonly used by engineers. It is envisioned that once further developed, this new DEM modeling approach can be adapted to a wide range of engineering applications.},
doi = {10.2172/1437100},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2018},
month = {Tue May 15 00:00:00 EDT 2018}
}

Technical Report:

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