Enhanced densification of Ti-6Al-4V/TiC powder blends by transformation mismatch plasticity

Bing Ye, Marc R. Matsen, David C. Dunand*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Ti-6Al-4V alloy with attractive properties such as corrosion resistance and high specific strength has a broad impact on daily life in the field of aerospace and medicine. The addition of TiC to Ti-6Al-4V is to further improve abrasion resistance and hardness. To have a low processing cost and precise control of the TiC volume fraction and distribution, the composite is densified with a blend of Ti-6Al-4V and TiC powders through a powder metallurgy route. The densification kinetics of the blend is studied for uniaxial die pressing (i) under isothermal conditions at 1020 °C, where β-Ti-6Al-4V deforms by creep and (ii) upon thermal cycling from 860 to 1020 °C, where the α-β transformation leads to transformation superplasticity. Densification curves for both isothermal and thermal cycling for various applied stresses and TiC fractions are in general agreement with predictions from continuum models and finite element simulation models performed at the powder level.

Original languageEnglish (US)
Pages (from-to)2520-2527
Number of pages8
JournalJournal of Materials Research
Volume28
Issue number17
DOIs
StatePublished - Sep 14 2013

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Enhanced densification of Ti-6Al-4V/TiC powder blends by transformation mismatch plasticity'. Together they form a unique fingerprint.

Cite this