skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modeling Long-term Creep Performance for Welded Nickel-base Superalloy Structures for Power Generation Systems

Abstract

The goal of this project is to model long-term creep performance for nickel-base superalloy weldments in high temperature power generation systems. The project uses physics-based modeling methodologies and algorithms for predicting alloy properties in heterogeneous material structures. The modeling methodology will be demonstrated on a gas turbine combustor liner weldment of Haynes 282 precipitate-strengthened nickel-base superalloy. The major developments are: (1) microstructure-property relationships under creep conditions and microstructure characterization (2) modeling inhomogeneous microstructure in superalloy weld (3) modeling mesoscale plastic deformation in superalloy weld and (4) a constitutive creep model that accounts for weld and base metal microstructure and their long term evolution. The developed modeling technology is aimed to provide a more efficient and accurate assessment of a material’s long-term performance compared with current testing and extrapolation methods. This modeling technology will also accelerate development and qualification of new materials in advanced power generation systems. This document is a final technical report for the project, covering efforts conducted from October 2014 to December 2016.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. GE Global Research, NIskayuna, NY (United States)
Publication Date:
Research Org.:
GE Global Research, NIskayuna, NY (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1345084
Report Number(s):
DOE-GE-FE24027
DUNS 08-6188401
DOE Contract Number:  
FE0024027
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 24 POWER TRANSMISSION AND DISTRIBUTION; Modeling; Creep; Haynes 282; Weldment

Citation Formats

Shen, Chen, Gupta, Vipul, Huang, Shenyan, Soare, Monica, Zhao, Pengyang, and Wang, Yunzhi. Modeling Long-term Creep Performance for Welded Nickel-base Superalloy Structures for Power Generation Systems. United States: N. p., 2017. Web. doi:10.2172/1345084.
Shen, Chen, Gupta, Vipul, Huang, Shenyan, Soare, Monica, Zhao, Pengyang, & Wang, Yunzhi. Modeling Long-term Creep Performance for Welded Nickel-base Superalloy Structures for Power Generation Systems. United States. doi:10.2172/1345084.
Shen, Chen, Gupta, Vipul, Huang, Shenyan, Soare, Monica, Zhao, Pengyang, and Wang, Yunzhi. Tue . "Modeling Long-term Creep Performance for Welded Nickel-base Superalloy Structures for Power Generation Systems". United States. doi:10.2172/1345084. https://www.osti.gov/servlets/purl/1345084.
@article{osti_1345084,
title = {Modeling Long-term Creep Performance for Welded Nickel-base Superalloy Structures for Power Generation Systems},
author = {Shen, Chen and Gupta, Vipul and Huang, Shenyan and Soare, Monica and Zhao, Pengyang and Wang, Yunzhi},
abstractNote = {The goal of this project is to model long-term creep performance for nickel-base superalloy weldments in high temperature power generation systems. The project uses physics-based modeling methodologies and algorithms for predicting alloy properties in heterogeneous material structures. The modeling methodology will be demonstrated on a gas turbine combustor liner weldment of Haynes 282 precipitate-strengthened nickel-base superalloy. The major developments are: (1) microstructure-property relationships under creep conditions and microstructure characterization (2) modeling inhomogeneous microstructure in superalloy weld (3) modeling mesoscale plastic deformation in superalloy weld and (4) a constitutive creep model that accounts for weld and base metal microstructure and their long term evolution. The developed modeling technology is aimed to provide a more efficient and accurate assessment of a material’s long-term performance compared with current testing and extrapolation methods. This modeling technology will also accelerate development and qualification of new materials in advanced power generation systems. This document is a final technical report for the project, covering efforts conducted from October 2014 to December 2016.},
doi = {10.2172/1345084},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 28 00:00:00 EST 2017},
month = {Tue Feb 28 00:00:00 EST 2017}
}

Technical Report:

Save / Share: