Assessment of microstructure of alloy Inconel 686 dissimilar weld claddings

JOURNAL OF ALLOYS AND COMPOUNDS

卷:684

Article

Silva, Cleiton C.¹  Afonso, Conrado R. M.²  Ramirez, Antonio J.³  Motta, Marcelo F.¹  Miranda, Helio C.¹  Farias, Jesualdo P.¹ 

[1] Univ Fed Ceara, Dept Engn Met & Mat, Lab Engn Soldagem, Campus Pici,Bloco 715, Fortaleza, Ceara, Brazil

[2] Univ Fed Sao Carlos, Dept Engn Mat, Rodovia Washington Luis,Km 235, Sao Carlos, SP, Brazil

[3] Ohio State Univ, Dept Mat Sci & Engn, 1248 Arthur E Adams Dr, Columbus, OH 43221 USA

关键词: Microstructure;    Welding;    Dissimilar;    Cladding;    Inconel 686;    Microscopy;   

DOI  :  10.1016/j.jallcom.2016.05.231

来源: Elsevier

【 摘 要 】

Weld overlay with Ni-based superalloys is an important option for industrial applications. New alloys have been developed to assure desirable characteristics such as corrosion resistance. The Inconel 686 superalloy was developed with a higher Cr and Mo content in order to improve its resistance to corrosion. However, information in the literature about the solidification and weld microstructure of this alloy is very limited. This work, which presents important results concerning the microstructure of the Inconel 686 superalloy, focuses on a detailed analysis of the secondary phases formed during solidification using transmission electron microscopy. The results show that there are several Mo-rich precipitates of the P-phase type in the matrix, and the sigma-phase and mu-phase in minor amounts. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free