The creep behavior of powder-metallurgy processed Ti-6Al-4V-1B(wt.%)

Research output: Contribution to journalArticle

  • 12 Citations

Abstract

The elevated-temperature (400-455 °C) tensile-creep deformation behavior of a powder-metallurgy processed Ti-6Al-4V-1B(wt.%) alloy was evaluated for applied stresses between 400 MPa and 450 MPa. The extruded alloy exhibited aligned TiB whiskers along with a lenticular α+β phase morphology. In situ tensile-creep observations indicated that the TiB whisker cracking occurred prior to crack formation in the α and β phases. The extent of surface cracking within the secondary creep stage was significant. Post-mortem analysis revealed that TiB cracking was also observed within the bulk of the sample though the extent of cracking within the bulk was not as severe as at the surface. Overall, the secondary creep rates were similar to that for a Ti-6Al-4V-1B(wt.%) cast alloy and significantly lower than those for Ti-6Al-4V(wt.%). Thus, 1 wt.%B improved the creep resistance of Ti-6Al-4V(wt.%).

LanguageEnglish (US)
Pages434-439
Number of pages6
JournalMaterials Science and Engineering A
Volume510-511
Issue numberC
DOIs
StatePublished - Jun 15 2009

Profile

tensile creep
powder metallurgy
Powder metallurgy
Creep
creep strength
cast alloys
crack initiation
Creep resistance
Crack initiation
temperature
Temperature

Keywords

  • Boron
  • Creep
  • Microstructure
  • Powder metallurgy
  • Titanium

ASJC Scopus subject areas

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

Cite this

The creep behavior of powder-metallurgy processed Ti-6Al-4V-1B(wt.%). / Boehlert, C. J.

In: Materials Science and Engineering A, Vol. 510-511, No. C, 15.06.2009, p. 434-439.

Research output: Contribution to journalArticle

@article{5d42fcdcb16a4b23862924ed7e367676,
title = "The creep behavior of powder-metallurgy processed Ti-6Al-4V-1B(wt.{\%})",
abstract = "The elevated-temperature (400-455 °C) tensile-creep deformation behavior of a powder-metallurgy processed Ti-6Al-4V-1B(wt.{\%}) alloy was evaluated for applied stresses between 400 MPa and 450 MPa. The extruded alloy exhibited aligned TiB whiskers along with a lenticular α+β phase morphology. In situ tensile-creep observations indicated that the TiB whisker cracking occurred prior to crack formation in the α and β phases. The extent of surface cracking within the secondary creep stage was significant. Post-mortem analysis revealed that TiB cracking was also observed within the bulk of the sample though the extent of cracking within the bulk was not as severe as at the surface. Overall, the secondary creep rates were similar to that for a Ti-6Al-4V-1B(wt.{\%}) cast alloy and significantly lower than those for Ti-6Al-4V(wt.{\%}). Thus, 1 wt.{\%}B improved the creep resistance of Ti-6Al-4V(wt.{\%}).",
keywords = "Boron, Creep, Microstructure, Powder metallurgy, Titanium",
author = "Boehlert, {C. J.}",
year = "2009",
month = "6",
day = "15",
doi = "10.1016/j.msea.2008.04.111",
language = "English (US)",
volume = "510-511",
pages = "434--439",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "C",

}

TY - JOUR

T1 - The creep behavior of powder-metallurgy processed Ti-6Al-4V-1B(wt.%)

AU - Boehlert,C. J.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - The elevated-temperature (400-455 °C) tensile-creep deformation behavior of a powder-metallurgy processed Ti-6Al-4V-1B(wt.%) alloy was evaluated for applied stresses between 400 MPa and 450 MPa. The extruded alloy exhibited aligned TiB whiskers along with a lenticular α+β phase morphology. In situ tensile-creep observations indicated that the TiB whisker cracking occurred prior to crack formation in the α and β phases. The extent of surface cracking within the secondary creep stage was significant. Post-mortem analysis revealed that TiB cracking was also observed within the bulk of the sample though the extent of cracking within the bulk was not as severe as at the surface. Overall, the secondary creep rates were similar to that for a Ti-6Al-4V-1B(wt.%) cast alloy and significantly lower than those for Ti-6Al-4V(wt.%). Thus, 1 wt.%B improved the creep resistance of Ti-6Al-4V(wt.%).

AB - The elevated-temperature (400-455 °C) tensile-creep deformation behavior of a powder-metallurgy processed Ti-6Al-4V-1B(wt.%) alloy was evaluated for applied stresses between 400 MPa and 450 MPa. The extruded alloy exhibited aligned TiB whiskers along with a lenticular α+β phase morphology. In situ tensile-creep observations indicated that the TiB whisker cracking occurred prior to crack formation in the α and β phases. The extent of surface cracking within the secondary creep stage was significant. Post-mortem analysis revealed that TiB cracking was also observed within the bulk of the sample though the extent of cracking within the bulk was not as severe as at the surface. Overall, the secondary creep rates were similar to that for a Ti-6Al-4V-1B(wt.%) cast alloy and significantly lower than those for Ti-6Al-4V(wt.%). Thus, 1 wt.%B improved the creep resistance of Ti-6Al-4V(wt.%).

KW - Boron

KW - Creep

KW - Microstructure

KW - Powder metallurgy

KW - Titanium

UR - http://www.scopus.com/inward/record.url?scp=65049088862&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65049088862&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2008.04.111

DO - 10.1016/j.msea.2008.04.111

M3 - Article

VL - 510-511

SP - 434

EP - 439

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

T2 - 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 - C

ER -