Laser shock processing of polycrystalline alumina ceramics

Fei Wang, Chenfei Zhang, Yongfeng Lu, Michael Nastasi, Bai Cui

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Laser shock processing (LSP) has been applied to polycrystalline α-Al2O3 ceramics. X-ray characterizations have revealed that LSP results in significant compressive residual stresses which can extend to a depth of more than 1.2 mm from the surface. The presence of compressive residual stresses improves the resistance of α-Al2O3 ceramics to indentation cracking. Microstructural characterization suggests that the majority of α-Al2O3 grains on the surface remains intact after LSP. However, damaged regions are occasionally present, which shows intergranular fractures and a limited plastic deformation in the vicinity of grain boundaries.

Original languageEnglish (US)
Pages (from-to)911-919
Number of pages9
JournalJournal of the American Ceramic Society
Volume100
Issue number3
DOIs
StatePublished - Mar 1 2017

Keywords

  • alumina
  • lasers
  • mechanical properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Laser shock processing of polycrystalline alumina ceramics'. Together they form a unique fingerprint.

Cite this