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

This content will become publicly available on January 1, 2020

Title: Crystal Viscoplasticity Model of Molybdenum Including the Influence of Silicon in Solid Solution [Crystal Viscoplasticity Model of Mo Including the Influence of Si in Solid Solution]

Abstract

Molybdenum (Mo)-based alloys offer higher temperature capability than nickel-based superalloys. The challenge of designing these alloys is tailoring the chemistry and microstructure to achieve high-temperature strength, creep and fatigue resistance, and oxidation resistance while maintaining lower-temperature ductility and damage tolerance. Structure-properties modeling tools can be used to identify optimum microstructures. However, one missing element in this tool set is a constitutive model for the more ductile α-Mo phase over the entire temperature range from room temperature to 1,400°C. A crystal viscoplasticity model is developed for α-Mo, including the influence of varying amounts of silicon (Si) in solid solution. As a result, the temperature, strain rate, and Si dependence of the deformation behavior needed to determine the model parameters are obtained from new compression experiments.

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
Universities/Institutions; USDOE
OSTI Identifier:
1542817
Report Number(s):
LA-UR-18-21658
Journal ID: ISSN 2379-1365; MPCACD
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Materials Performance and Characterization
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2379-1365
Publisher:
ASTM International
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ICME; Intermetallics; Plasticity; constitutive model

Citation Formats

Brindley, Kyle Andrew, and Neu, Richard W. Crystal Viscoplasticity Model of Molybdenum Including the Influence of Silicon in Solid Solution [Crystal Viscoplasticity Model of Mo Including the Influence of Si in Solid Solution]. United States: N. p., 2019. Web. doi:10.1520/MPC20190040.
Brindley, Kyle Andrew, & Neu, Richard W. Crystal Viscoplasticity Model of Molybdenum Including the Influence of Silicon in Solid Solution [Crystal Viscoplasticity Model of Mo Including the Influence of Si in Solid Solution]. United States. doi:10.1520/MPC20190040.
Brindley, Kyle Andrew, and Neu, Richard W. Tue . "Crystal Viscoplasticity Model of Molybdenum Including the Influence of Silicon in Solid Solution [Crystal Viscoplasticity Model of Mo Including the Influence of Si in Solid Solution]". United States. doi:10.1520/MPC20190040.
@article{osti_1542817,
title = {Crystal Viscoplasticity Model of Molybdenum Including the Influence of Silicon in Solid Solution [Crystal Viscoplasticity Model of Mo Including the Influence of Si in Solid Solution]},
author = {Brindley, Kyle Andrew and Neu, Richard W.},
abstractNote = {Molybdenum (Mo)-based alloys offer higher temperature capability than nickel-based superalloys. The challenge of designing these alloys is tailoring the chemistry and microstructure to achieve high-temperature strength, creep and fatigue resistance, and oxidation resistance while maintaining lower-temperature ductility and damage tolerance. Structure-properties modeling tools can be used to identify optimum microstructures. However, one missing element in this tool set is a constitutive model for the more ductile α-Mo phase over the entire temperature range from room temperature to 1,400°C. A crystal viscoplasticity model is developed for α-Mo, including the influence of varying amounts of silicon (Si) in solid solution. As a result, the temperature, strain rate, and Si dependence of the deformation behavior needed to determine the model parameters are obtained from new compression experiments.},
doi = {10.1520/MPC20190040},
journal = {Materials Performance and Characterization},
number = 1,
volume = 8,
place = {United States},
year = {2019},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on January 1, 2020
Publisher's Version of Record

Save / Share: