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Journal of Materials Science

, Volume 43, Issue 4, pp 1480–1485 | Cite as

A study of microstructure and phase constitutions of the Cr–Ni surfacing layers deposited on Fe3Al intermetallic by SMAW

  • Haijun Ma
  • Yajiang Li
  • S. A. Gerasimov
  • Juan Wang
Article
  • 119 Downloads

Abstract

Three different Cr–Ni alloys were deposited on the surface of Fe3Al intermetallic by shielded metal arc welding (SMAW) to investigate the weldability of this material. The microstructure, phase constitutions, and fine structures of Cr–Ni surfacing layers were analyzed via metalloscope, SEM, XRD, and TEM. The results indicated that the Fe3Al/Cr–Ni joint shows no cracks when Cr25–Ni13 alloy was deposited. The surfacing layer consisted of austenite (A), pro-eutectoid ferrite (PF), carbide-free bainite (CFB), lath martensite (LM), and little acicular ferrite (AF). Phase constitutions of the joint included Fe3Al, FeAl, γ-(Fe,C), γ-(Fe,Ni), NiAl, and Ni3Al. The lattice orientation for CFB between α and γ phases was (110)α//(111) γ . Typical LM was composed of interlayer-carbide and α ferrite of 400 nm in length and 40 nm in width.

Keywords

Welding Austenite Bainite Ni3Al Fusion Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This project was sponsored by the National Natural Science Foundation of China (50375088) and Doctoral Foundation of Shandong Province (2006BS04004) and Development project of Science and Technology of Shandong Province (2007GG10004016).

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Haijun Ma
    • 1
  • Yajiang Li
    • 1
    • 2
  • S. A. Gerasimov
    • 2
  • Juan Wang
    • 1
  1. 1.Key Lab of Liquid Structure and Heredity of Materials, Ministry of EducationShandong University (South Campus)JinanP.R. China
  2. 2.Material Science DepartmentBauman Moscow State Technical UniversityMoscowRussia

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