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Superplasitic tensile behavior of in situ TiBw/Ti6Al4V composite with novel network microstructure

  • Harbin Institute of Technology

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

Abstract

In situ TiB whiskers reinforced Ti6Al4V (TiBw/Ti64) composites with a novel network microstructure were successfully fabricated by reaction hot pressing. The novel composites exhibited a superior combination of mechanical properties at room temperature and a superior strengthening effect at 400-600°C. In the present work, superplastic tensile behavior of the novel composite was carried out at 900-1000°C. The tensile elongation of the novel composite is always over 100% when the tensile temperature is over 900°C. The elongation of the composite firstly increases and then decreases with increasing tensile temperatures. In particular, the tensile elongation is up to 214% at 940°C, which can be viewed as the highest ductility for the assintered discontinuously reinforced titanium matrix composites (DRTMCs) fabricated by powder metallurgy (PM) process up to date. The superior ductility can be attributed to the novel network microstructure including the TiBw-lean region and the TiBw-rich network region.

Original languageEnglish
Title of host publication8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
PublisherJohn Wiley and Sons Inc
Pages1501-1506
Number of pages6
ISBN (Print)9781632660008
DOIs
StatePublished - 2013
Externally publishedYes
Event8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8 - Waikoloa, HI, United States
Duration: 4 Aug 20139 Aug 2013

Publication series

Name8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
Volume2

Conference

Conference8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
Country/TerritoryUnited States
CityWaikoloa, HI
Period4/08/139/08/13

Keywords

  • In situ
  • Network microstructure
  • Powder metallurgy
  • Superplastic tensile behaivior
  • Titanium matrix composites (TMCs)

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