Isothermal fatigue and in-phase thermo-mechanical fatigue of a 6061Al/SiCw

Lihe Qian, Zhong Guang Wang, Hiroyuki Toda, Toshiro Kobayashi

Research output: Contribution to journalArticlepeer-review

Abstract

The isothermal low cycle fatigue (IF) at 300°C and in-phase thermo-mechanical fatigue (IP-TMF) with temperature cycling between 150-300°C of a 6061 Al alloy reinforced with 28 vol % SICw were studied. Experimental results indicate that IP-TMF shows continuous cyclic softening until failure, while IF loading initially shows several cycles of cyclic hardening followed by cyclic softening till final fracture. A comparison of IF and IP-TMF lives has been made and various damage mechanisms operative under different strain ranges and loading conditions have been explained. SEM micrographs show that the damage processes under both IF and IP-TMF conditions consist of initiation, growth and coalescence of voids in the matrix around whiskers.

Original languageEnglish
Pages (from-to)799-804
Number of pages6
JournalInternational Journal of Materials and Product Technology
Issue numberSPEC ISS. VOL.2
Publication statusPublished - 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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