Effects of Fe addition on tensile deformation mode and crevice corrosion resistance in Ti-15Mo alloy

X. H. Min, S. Emura, N. Sekido, T. Nishimura, K. Tsuchiya, K. Tsuzaki

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The tensile deformation mode at ambient temperature and the crevice corrosion resistance at a high temperature of 373 K were investigated in Ti-15Mo and Ti-15Mo-1Fe (mass%) alloys. The β phase stability increased, and the formation of an athermal ω phase was suppressed by the Fe addition. EBSD and TEM observations showed that the deformation mode in the Ti-15Mo alloy changed from a {3 3 2}〈1 1 3〉 twinning to a slip by the Fe addition, which coincided with the predictions from the electron/atom (e/a) ratio and the Mo equivalency. EPMA examinations indicated that the existence of twins in a few regions in the Ti-15Mo-1Fe alloy was caused by the solidification segregation of Mo and Fe atoms. The yield strength of the Ti-15Mo-1Fe alloy of 837 MPa was much higher than that of the Ti-15Mo alloy of 439 MPa due to the change in the deformation mode. The Ti-15Mo-1Fe alloy maintained an extremely high crevice corrosion resistance in a 10% NaCl water solution with a pH value of 0.5 at 373 K since there was no significant decrease in the average value of the bond order (Bo). A good combination of tensile properties, crevice corrosion resistance and cost is thought to be obtainable through further optimization of the chemical compositions by the e/a ratio, the Mo equivalency and the Bo.

Original languageEnglish
Pages (from-to)2693-2701
Number of pages9
JournalMaterials Science and Engineering A
Volume527
Issue number10-11
DOIs
Publication statusPublished - Apr 25 2010
Externally publishedYes

Fingerprint

tensile deformation
corrosion resistance
Corrosion resistance
cracks
Atoms
Phase stability
Electrons
Twinning
Electron probe microanalysis
Tensile properties
Yield stress
atoms
Solidification
tensile properties
yield strength
twinning
Transmission electron microscopy
Temperature
solidification
ambient temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Effects of Fe addition on tensile deformation mode and crevice corrosion resistance in Ti-15Mo alloy. / Min, X. H.; Emura, S.; Sekido, N.; Nishimura, T.; Tsuchiya, K.; Tsuzaki, K.

In: Materials Science and Engineering A, Vol. 527, No. 10-11, 25.04.2010, p. 2693-2701.

Research output: Contribution to journalArticle

Min, X. H. ; Emura, S. ; Sekido, N. ; Nishimura, T. ; Tsuchiya, K. ; Tsuzaki, K. / Effects of Fe addition on tensile deformation mode and crevice corrosion resistance in Ti-15Mo alloy. In: Materials Science and Engineering A. 2010 ; Vol. 527, No. 10-11. pp. 2693-2701.
@article{d0e8f15cdf6748abab02243f1639c385,
title = "Effects of Fe addition on tensile deformation mode and crevice corrosion resistance in Ti-15Mo alloy",
abstract = "The tensile deformation mode at ambient temperature and the crevice corrosion resistance at a high temperature of 373 K were investigated in Ti-15Mo and Ti-15Mo-1Fe (mass{\%}) alloys. The β phase stability increased, and the formation of an athermal ω phase was suppressed by the Fe addition. EBSD and TEM observations showed that the deformation mode in the Ti-15Mo alloy changed from a {3 3 2}〈1 1 3〉 twinning to a slip by the Fe addition, which coincided with the predictions from the electron/atom (e/a) ratio and the Mo equivalency. EPMA examinations indicated that the existence of twins in a few regions in the Ti-15Mo-1Fe alloy was caused by the solidification segregation of Mo and Fe atoms. The yield strength of the Ti-15Mo-1Fe alloy of 837 MPa was much higher than that of the Ti-15Mo alloy of 439 MPa due to the change in the deformation mode. The Ti-15Mo-1Fe alloy maintained an extremely high crevice corrosion resistance in a 10{\%} NaCl water solution with a pH value of 0.5 at 373 K since there was no significant decrease in the average value of the bond order (Bo). A good combination of tensile properties, crevice corrosion resistance and cost is thought to be obtainable through further optimization of the chemical compositions by the e/a ratio, the Mo equivalency and the Bo.",
author = "Min, {X. H.} and S. Emura and N. Sekido and T. Nishimura and K. Tsuchiya and K. Tsuzaki",
year = "2010",
month = "4",
day = "25",
doi = "10.1016/j.msea.2009.12.050",
language = "English",
volume = "527",
pages = "2693--2701",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "10-11",

}

TY - JOUR

T1 - Effects of Fe addition on tensile deformation mode and crevice corrosion resistance in Ti-15Mo alloy

AU - Min, X. H.

AU - Emura, S.

AU - Sekido, N.

AU - Nishimura, T.

AU - Tsuchiya, K.

AU - Tsuzaki, K.

PY - 2010/4/25

Y1 - 2010/4/25

N2 - The tensile deformation mode at ambient temperature and the crevice corrosion resistance at a high temperature of 373 K were investigated in Ti-15Mo and Ti-15Mo-1Fe (mass%) alloys. The β phase stability increased, and the formation of an athermal ω phase was suppressed by the Fe addition. EBSD and TEM observations showed that the deformation mode in the Ti-15Mo alloy changed from a {3 3 2}〈1 1 3〉 twinning to a slip by the Fe addition, which coincided with the predictions from the electron/atom (e/a) ratio and the Mo equivalency. EPMA examinations indicated that the existence of twins in a few regions in the Ti-15Mo-1Fe alloy was caused by the solidification segregation of Mo and Fe atoms. The yield strength of the Ti-15Mo-1Fe alloy of 837 MPa was much higher than that of the Ti-15Mo alloy of 439 MPa due to the change in the deformation mode. The Ti-15Mo-1Fe alloy maintained an extremely high crevice corrosion resistance in a 10% NaCl water solution with a pH value of 0.5 at 373 K since there was no significant decrease in the average value of the bond order (Bo). A good combination of tensile properties, crevice corrosion resistance and cost is thought to be obtainable through further optimization of the chemical compositions by the e/a ratio, the Mo equivalency and the Bo.

AB - The tensile deformation mode at ambient temperature and the crevice corrosion resistance at a high temperature of 373 K were investigated in Ti-15Mo and Ti-15Mo-1Fe (mass%) alloys. The β phase stability increased, and the formation of an athermal ω phase was suppressed by the Fe addition. EBSD and TEM observations showed that the deformation mode in the Ti-15Mo alloy changed from a {3 3 2}〈1 1 3〉 twinning to a slip by the Fe addition, which coincided with the predictions from the electron/atom (e/a) ratio and the Mo equivalency. EPMA examinations indicated that the existence of twins in a few regions in the Ti-15Mo-1Fe alloy was caused by the solidification segregation of Mo and Fe atoms. The yield strength of the Ti-15Mo-1Fe alloy of 837 MPa was much higher than that of the Ti-15Mo alloy of 439 MPa due to the change in the deformation mode. The Ti-15Mo-1Fe alloy maintained an extremely high crevice corrosion resistance in a 10% NaCl water solution with a pH value of 0.5 at 373 K since there was no significant decrease in the average value of the bond order (Bo). A good combination of tensile properties, crevice corrosion resistance and cost is thought to be obtainable through further optimization of the chemical compositions by the e/a ratio, the Mo equivalency and the Bo.

UR - http://www.scopus.com/inward/record.url?scp=77349089484&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77349089484&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2009.12.050

DO - 10.1016/j.msea.2009.12.050

M3 - Article

AN - SCOPUS:77349089484

VL - 527

SP - 2693

EP - 2701

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 10-11

ER -