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Effect of microstructures on fatigue property of TC18 titanium alloy with equal strength

  • Chenglong Shi
  • , Guoqing Wu*
  • , Aixue Sha
  • , Huiren Jiang
  • *Corresponding author for this work
  • Beihang University
  • Beijing Institute of Aeronautical Materials

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

Abstract

Mechanical properties including fatigue property and microhardness of pre and post fatiguing, have been investigated for four different microstructures (near bi-model, lamellar and basketweave) of TC18 titanium alloys. The correlation of condition fatigue strength and microhardness decreasing among different microstructures have been discussed. On the condition of equal strength and after 107 cycles, it was found that the near bi-model and fine basketweave microstructure have superior fatigue property compared with the lamellar and coarse basetweave microstructure, respectively. The decrease amplitudes of pre and post fatiguing for different microstructures were different. The near bi-model microstructure, which had high fatigue strength has almost the same microhardness of pre and post fatiguing. But the microhardness of lamellar and basketweave microstructures, which had inferior fatigue strengths decreased significantly.

Original languageEnglish
Title of host publication2011 Chinese Materials Conference
PublisherElsevier Ltd
Pages1209-1215
Number of pages7
ISBN (Print)9781627485838
DOIs
StatePublished - 2012

Publication series

NameProcedia Engineering
Volume27
ISSN (Print)1877-7058

Keywords

  • Basketweave microstructure
  • Lamellar microstructure
  • Microhardness
  • Near bi-model microstructure
  • TC18 titanium alloy

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