Low carbon content NiTi shape memory alloy produced by electron beam melting

Materials Research

Jorge Otubo²  Odair Doná Rigo¹  Carlos De Moura Neto²  Michael Joseph Kaufman¹  Paulo Roberto Mei¹ 

[1] ,Instituto Tecnológico de AeronáuticaS. J. dos Campos SP ,Brazil

关键词: NiTi;    Shape Memory;    Electron Beam Melting;    Martensitic Transformation;   

DOI  :  10.1590/S1516-14392004000200008

来源: SciELO

【 摘 要 】

Earlier works showed that the use of electron beam melting is a viable process to produce NiTi shape memory alloy. In those works a static and a semi-dynamic processes were used producing small shell-shaped and cylindrical ingots respectively. The main characteristics of those samples were low carbon concentration and good composition homogeneity throughout the samples. This paper presents the results of scaling up the ingot size and processing procedure using continuous charge feeding and continuous casting. The composition homogeneity was very good demonstrated by small variation in martensitic transformation temperatures with carbon content around 0.013wt% compared to 0.04 to 0.06wt% of commercial products.

【 授权许可】

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