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Solid Silver Embrittlement of Ti-6Al-2Sn-4Zr-2Mo Alloy
Proceedings of the Materials Science and Technology Conference and Exhibition 2017 (2017, Pittsburgh, PA)
  • Jingjing Qing
  • David C. Van Aken, Missouri University of Science and Technology
  • Mario F. Buchely, Missouri University of Science and Technology
  • Michael A. Walker
  • Royle W. Juusola
  • John E. Goethe
Abstract

Embrittlement of Ti alloy due to surface contact with solid silver metal was reported. Tensile failure of Ti-6Al-2Sn-4Zr-2Mo alloy in contact with silver was investigated at 450⁰C and 500⁰C in this study. Experiments were designed and performed to obtain lifetime/stress/temperature curves for Ti-6-2-4-2 alloy. The transverse and the longitudinal rolling directions of Ti alloy were compared. High purity silver was pressed against the Ti specimen using two steel plates clamped with two bolts. Effect of the torque applied on two bolts on failure time was studied. Intergranular grain boundary decohesion was observed next to the silver contact side on the fracture surface, indicating brittle failure of the Ti-6-2-4-2 alloy. Microvoids observed in the area away from silver contact side on the fracture surface indicate ductile failure of the alloy. Silver was found on the facture surface of specimen after failure using energy dispersive X-ray (EDX).

Meeting Name
Materials Science and Technology Conference and Exhibition 2017, MS&T 2017 (2017: Oct. 8-12, Pittsburgh, PA)
Department(s)
Materials Science and Engineering
Research Center/Lab(s)
Peaslee Steel Manufacturing Research Center
Keywords and Phrases
  • Lifetime/stress/temperature curves,
  • Silver,
  • Solid metal embrittlement,
  • Titanium alloy
International Standard Book Number (ISBN)
978-151085058-3
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2017 Curran Associates, Inc., All rights reserved.
Publication Date
10-1-2017
Publication Date
01 Oct 2017
Disciplines
Citation Information
Jingjing Qing, David C. Van Aken, Mario F. Buchely, Michael A. Walker, et al.. "Solid Silver Embrittlement of Ti-6Al-2Sn-4Zr-2Mo Alloy" Proceedings of the Materials Science and Technology Conference and Exhibition 2017 (2017, Pittsburgh, PA) Vol. 1 (2017) p. 28 - 36
Available at: http://works.bepress.com/david-vanaken/107/