Microstructural evolution and growth behavior of intermetallic compounds at the liquid Al/solid Fe interface by synchrotron X-ray radiography

Zongye Ding, Qiaodan Hu, Wenquan Lu, Xuan Ge, Sheng Cao, Siyu Sun, Tianxing Yang, Mingxu Xia, Jianguo Li

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24 Citations (Scopus)

Abstract

The growth of Inter-Metallic Compounds (IMCs) with dissolution was investigated on the liquid Al/solid Fe interconnection by using synchrotron radiation real-time imaging technology. At the initial stage of holding at 850 °C, a layer of the η-Fe2Al5 phase formed at the interface, and tongue-like η grew into α-Fe. The tongue-like η phase had a stronger (001) texture than the layered phase. The coalescence of tongue-like η started at the bottom, followed by the dissolution of IMCs, which leads to a further increase in its growth rate. During solidification stage, the dotted, needle-like and flake θ-FeAl3 phases were sequentially formed.

Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalMaterials Characterization
Volume136
DOIs
Publication statusPublished - 1 Feb 2018

Keywords

  • Growth behavior
  • Intermetallic compounds
  • Liquid Al/solid Fe interface
  • Solidification
  • Synchrotron radiation

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