Influence of microstructure on fatigue crack propagation and fracture toughness of large Ti-6Al-4V cast structure

Xin Feng, Anqi Wang, Yingjie Ma, Xinhua Wu, Jiafeng Lei, Yuyou Cui, Rui Yang

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

The study is part of research activities for EU-China FP7 collaborative project (FP7-AAT-2010-RTD-CHINA): Casting of Large Ti Structures (COLTS) and has been carried out in order to investigate the influence of microstructure of cast Ti-6Al-4V large thin wall structure on fatigue crack propagation and fracture toughness. Some samples were post HIPped (hot isostatic pressed). The effects of grain morphology on fracture and fatigue crack propagation mechanism have also been studied. The fracture surface has been examined using scanning electron microscopy (SEM). The relationships between microstructure and fatigue crack propagation rate and fracture toughness were established and comparison has been made between the as-cast and post HIPped conditions.

Original languageEnglish
Title of host publication13th International Congress on Fracture 2013 (ICF 2013)
Subtitle of host publicationBeijing, China, 16-21 June 2013 [proceedings]
Place of PublicationBeijing, China
PublisherThe Chinese Society of Theoretical and Applied Mechanics (CSTAM)
Pages1032-1038
Number of pages7
Volume2
ISBN (Print)9781629933696
Publication statusPublished - 2013
EventInternational Congress on Fracture 2013 - Beijing, China
Duration: 1 Jan 201321 Jun 2013
Conference number: 13th
http://www.proceedings.com/20290.html
http://www.icf13.org/

Conference

ConferenceInternational Congress on Fracture 2013
Abbreviated titleICF 2013
CountryChina
CityBeijing
Period1/01/1321/06/13
Internet address

Keywords

  • Fatigue crack growth
  • Fracture toughness
  • Hot isostatic pressing
  • Ti-6Al-4V alloy

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