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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12734
Title: Effect of germanium and silicon additions on the mechanical properties of a near-α titanium alloy
Authors: Kitashima T.
Suresh, K. S.
Yamabe-Mitarai Y.
Published in: Materials Science and Engineering A
Abstract: The effect of Germanium (Ge) addition and simultaneous addition of Ge and Silicon (Si) on the tensile properties, impact toughness, and fracture behavior of the near-α alloy Ti-5Al-2Sn-4Zr-2Mo has been investigated at room temperature and at 650. °C. Addition of Ge monotonically increases the 0.2% yield stress (YS) and ultimate tensile stress (UTS) at both temperatures, and increases the rupture elongation at 650. °C; however, the Charpy impact toughness at both temperatures decreased. At 650. °C, this alloy ruptured in a hybrid manner, showing cracking at the germanide precipitates and plastic deformation in the surrounding matrix forming equiaxed dimples. The effect of simultaneous addition of 1. wt% Ge and 0.1. wt% Si on the mechanical properties is also discussed in relation to the effect of precipitate volume fraction and solid solution strengthening. © 2014 Elsevier B.V.
Citation: Materials Science and Engineering A (2014), 597(): 212-218
URI: https://doi.org/10.1016/j.msea.2013.12.099
http://repository.iitr.ac.in/handle/123456789/12734
Issue Date: 2014
Keywords: Germanium
Mechanical property
Phase transformation
Precipitation
Titanium alloys
ISSN: 9215093
Author Scopus IDs: 12807889100
54882593400
7006561531
Author Affiliations: Kitashima, T., High Temperature Materials Unit, National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
Suresh, K.S., High Temperature Materials Unit, National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
Yamabe-Mitarai, Y., High Temperature Materials Unit, National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
Funding Details: The authors gratefully acknowledge the support of the following staff members: Mr. Satoshi Iwasaki, Mr. Shuji Kuroda, Mr. Yasushi Taniuchi, and Ms. Hong Gao of NIMS.
Corresponding Author: Kitashima, T.; High Temperature Materials Unit, National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan; email: Kitashima.Tomonori@nims.go.jp
Appears in Collections:Journal Publications [MT]

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