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Title: A low-cost hierarchical nanostructured beta-titanium alloy with high strength

Abstract

Lightweighting of automobiles by use of novel low-cost, high strength-to-weight ratio structural materials can reduce the consumption of fossil fuels and in turn CO2 emission. Working towards this goal we achieved high strength in a low cost β-titanium alloy, Ti-1Al-8V-5Fe (Ti185), by hierarchical nanostructure consisting of homogenous distribution of micron-scale and nanoscale α-phase precipitates within the β-phase matrix. The sequence of phase transformation leading to this hierarchical nanostructure is explored using electron microscopy and atom probe tomography. Our results suggest that the high number density of nanoscale α-phase precipitates in the β-phase matrix is due to ω assisted nucleation of α resulting in high tensile strength, greater than any current commercial titanium alloy. Furthermore hierarchical nanostructured Ti185 serves as an excellent candidate for replacing costlier titanium alloys and other structural alloys for cost-effective lightweighting applications.

Authors:
 [1];  [1];  [2];  [1];  [3];  [3];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Texas A & M Univ., College Station, TX (United States)
  3. Advance Materials Products Inc. (ADMA), Hudson, OH (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1253835
Report Number(s):
PNNL-SA-116064
Journal ID: ISSN 2041-1723; ncomms11176
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; hierarchical nanostructure; β-titanium alloy; low-cost titanium alloy; atom probe tomography; Environmental Molecular Sciences Laboratory

Citation Formats

Devaraj, Arun, Joshi, Vineet V., Srivastava, Ankit, Manandhar, Sandeep, Moxson, Vladimir, Duz, Volodymyr A., and Lavender, Curt. A low-cost hierarchical nanostructured beta-titanium alloy with high strength. United States: N. p., 2016. Web. doi:10.1038/ncomms11176.
Devaraj, Arun, Joshi, Vineet V., Srivastava, Ankit, Manandhar, Sandeep, Moxson, Vladimir, Duz, Volodymyr A., & Lavender, Curt. A low-cost hierarchical nanostructured beta-titanium alloy with high strength. United States. doi:10.1038/ncomms11176.
Devaraj, Arun, Joshi, Vineet V., Srivastava, Ankit, Manandhar, Sandeep, Moxson, Vladimir, Duz, Volodymyr A., and Lavender, Curt. Fri . "A low-cost hierarchical nanostructured beta-titanium alloy with high strength". United States. doi:10.1038/ncomms11176. https://www.osti.gov/servlets/purl/1253835.
@article{osti_1253835,
title = {A low-cost hierarchical nanostructured beta-titanium alloy with high strength},
author = {Devaraj, Arun and Joshi, Vineet V. and Srivastava, Ankit and Manandhar, Sandeep and Moxson, Vladimir and Duz, Volodymyr A. and Lavender, Curt},
abstractNote = {Lightweighting of automobiles by use of novel low-cost, high strength-to-weight ratio structural materials can reduce the consumption of fossil fuels and in turn CO2 emission. Working towards this goal we achieved high strength in a low cost β-titanium alloy, Ti-1Al-8V-5Fe (Ti185), by hierarchical nanostructure consisting of homogenous distribution of micron-scale and nanoscale α-phase precipitates within the β-phase matrix. The sequence of phase transformation leading to this hierarchical nanostructure is explored using electron microscopy and atom probe tomography. Our results suggest that the high number density of nanoscale α-phase precipitates in the β-phase matrix is due to ω assisted nucleation of α resulting in high tensile strength, greater than any current commercial titanium alloy. Furthermore hierarchical nanostructured Ti185 serves as an excellent candidate for replacing costlier titanium alloys and other structural alloys for cost-effective lightweighting applications.},
doi = {10.1038/ncomms11176},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {2016},
month = {4}
}

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    Works referencing / citing this record:

    Low-cost and high-strength powder metallurgy Ti–Al–Mo–Fe alloy and its application
    journal, June 2019


    Low-cost and high-strength powder metallurgy Ti–Al–Mo–Fe alloy and its application
    journal, June 2019


    Friction and wear on titanium alloy surface machined by ultrasonic vibration-assisted milling
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    • Zheng, Kan; Liao, Wenhe; Dong, Qi
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    Three-dimensional nanoscale characterisation of materials by atom probe tomography
    journal, November 2016