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Optimum design, microstructure and mechanical properties of Ti/Ti 3Al multi-layered materials

  • L. Ma*
  • , X. D. He
  • , Z. H. Hu
  • , Y. Sun
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study concerned with the optimum design, microstructure and mechanical properties analysis of a multi-layered metal/intermetallic materials consisting of Ti and Ti3Al prepared by the electron beam physical vapor deposition (EB-PVD) technology. Based on fracture mechanics and numerical simulation method, the optimized microstructure of Ti-Ti3Al multi-layered materials has been obtained by analyzing the relation curve between structural parameters and work of fracture of materials, then dual-target evaporating method was used to evaporate Ti and Ti3-47A1 bar alternately to form Ti/Ti3Al thin sheet about 0.12mm thickness. Pattern and phase analysis by SEM and XRD showed that there was homogeneous and continuous interface between layers and the intermetallic layers were made up of α2 phase alloy. The tensile curve of Ti/Ti3Al microlaminates represented the characteristic of multi-layered materials and the maximal extensibility of sample as deposited reached 5.83% and the fracture appearance showed ductile rupture feature.

Original languageEnglish
Title of host publicationProgress in Light Metals, Aerospace Materials and Superconductors
PublisherTrans Tech Publications Ltd
Pages1575-1580
Number of pages6
EditionPART 3
ISBN (Print)0878494324, 9780878494323
DOIs
StatePublished - 2007
Event2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006 - Beijing, China
Duration: 25 Jun 200630 Jun 2006

Publication series

NameMaterials Science Forum
NumberPART 3
Volume546-549
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006
Country/TerritoryChina
CityBeijing
Period25/06/0630/06/06

Keywords

  • Mechanical property
  • Microlaminate
  • Microstructure
  • Optimum design
  • Ti/TiAl

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