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

机译:电子束熔化制备的低碳NiTi形状记忆合金

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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.
机译:早期的工作表明,使用电子束熔化技术是生产NiTi形状记忆合金的可行方法。在那些作品中,静态和半动态过程分别用于生产小壳形和圆柱形锭。这些样品的主要特征是低碳浓度和整个样品中良好的组成均匀性。本文介绍了使用连续进料和连续铸造扩大铸锭尺寸和加工程序的结果。马氏体转变温度的微小变化证明了组成的均质性,碳含量约为0.013wt%,而市售产品的含量为0.04至0.06wt%。

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