Microstructure development in laser forming of zirconium coatings on AZ91D magnesium alloy substrates

Tai Man Yue, H. Xie, X. Lin, H. O. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Zr-coatings were fabricated on AZ91D magnesium alloy substrates using laser forming by means of a blow powder technique. Multi-passes were required to form a pure Zr top coating layer on the AZ91D Mg substrate. The microstructure and phases of the coating were studied using XRD, EDS and SEM. The alloy element Al in AZ91 alloy was found to be important for the formation of a metallurgically bonded interface between the Zr coating and the matrix material. The coating can be classified as a three-layer structure with a pure Zr layer at the top surface. The development of the coating microstructure is explained with the aid of a schematic solidification scheme.
Original languageEnglish
Pages (from-to)328-331
Number of pages4
JournalJournal of Alloys and Compounds
Volume512
Issue number1
DOIs
Publication statusPublished - 25 Jan 2012

Keywords

  • Coating
  • Laser forming
  • Magnesium
  • Microstructure
  • Solidification
  • Zirconium

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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