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Effect of intermetallics on the low cyclic fatigue crack growth behavior of a heavily alloyed Al-Si piston alloy

  • Guo hua Zhang
  • , Bing chao Li
  • , Jian xin Zhang
  • , Zeng jian Feng
  • , Zuo shan Wei
  • , Wei Cai*
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Shandong Binzhou Bohai Piston Co., Ltd
  • Shandong University

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

Abstract

This paper focuses on a typical automotive piston material to characterize its fractographic appearance after low cyclic fatigue test. The fatigue fracture of this heavily alloyed Al-Si alloy takes place in a brittle manner. The crack nucleated from a large intermetallic colony close to the specimen surface. When the crack encountered the intermetallics, it might progress along the interface among the intermetallics or the interface between the intermetallics and the eutectic. The debonded Al-Si eutectic region and intermetallics provided a weak material path for the crack propagation. A fatigue fracture mechanism in the heavily alloyed Al-Si alloy is elucidated.

Original languageEnglish
Title of host publicationMaterials Engineering and Automatic Control
Pages281-285
Number of pages5
DOIs
StatePublished - 2012
Externally publishedYes
Event2012 International Conference on Materials Engineering and Automatic Control, ICMEAC 2012 - Jinan, China
Duration: 27 Apr 201229 Apr 2012

Publication series

NameAdvanced Materials Research
Volume562-564
ISSN (Print)1022-6680

Conference

Conference2012 International Conference on Materials Engineering and Automatic Control, ICMEAC 2012
Country/TerritoryChina
CityJinan
Period27/04/1229/04/12

Keywords

  • Aluminum alloys
  • Crack growth
  • Fracture
  • Intermetallics
  • Low cyclic fatigue

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