Solid Silver Embrittlement of Ti-6Al-2Sn-4Zr-2Mo Alloy
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).
J. Qing 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, pp. 28-36, Curran Associates, Inc., Oct 2017.
The definitive version is available at https://doi.org/10.7449/2017/MST_2017_28_36
Materials Science and Technology Conference and Exhibition 2017, MS&T 2017 (2017: Oct. 8-12, Pittsburgh, PA)
Materials Science and Engineering
Peaslee Steel Manufacturing Research Center
Keywords and Phrases
Lifetime/stress/temperature curves; Silver; Solid metal embrittlement; Titanium alloy
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2017 Curran Associates, Inc., All rights reserved.
01 Oct 2017