Experimental investigation on selective laser melting additive manufacturing of non-ferromagnetic heterogeneous material based on TiNi alloy with Ta coating

IF 1.9 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Hui Long, Weihui Wu, Di Wang, Linqing Liu
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引用次数: 0

Abstract

In order to manufacture non-ferromagnetic heterogeneous material by Selective Laser Melting (SLM), it is necessary to solve the separation problem of non-ferromagnetic mixed powders after SLM forming. This research presents how to resolve this problem using TiNi/Ta mixed powders by ultrasonic vibration screening method and the analysis of SLM manufacturing experiment for non-ferromagnetic heterogeneous material. The purity of TiNi and Ta powders after separation could reach 99.7087%wt% and 98.8501wt% respectively, which both reached a relatively high purity. A TiNi alloy sample with Ta coating and TiNi/Ta gradient transition was manufactured successfully by SLM. The material interface of the sample achieves metallurgical bonding, and the color of the sample profile shows a gradient transition. The EDS analysis shows that the material composition changes from Ta ->Ta/TiNi gradient ->TiNi from surface to inside of the sample. The Ta coating contains over 92.5wt% Ta, and the TiNi matrix contains over 98.69wt% TiNi. Along the powder laying direction, it is difficult to clean the small powder near the solid-powder or solid-solid interfaces made of two different materials, which causes micro polluted areas near the interfaces. This study also provides a new method for integrated manufacturing of TiNi alloy part with Ta coating.
TiNi合金Ta涂层非铁磁非均相材料选择性激光熔化增材制造实验研究
为了制备非铁磁性非均相材料,必须解决选择性激光熔化成形后非铁磁性混合粉末的分离问题。本文介绍了如何利用超声振动筛分方法,利用TiNi/Ta混合粉末解决这一问题,并对非铁磁非均质材料的SLM制造实验进行了分析。分离后的TiNi和Ta粉体的纯度分别可达99.7087%wt%和98.8501wt%,均达到较高的纯度。采用激光激光加工(SLM)成功制备了具有Ta涂层和TiNi/Ta梯度转变的TiNi合金样品。样品的材料界面实现了冶金结合,样品轮廓的颜色呈现梯度转变。EDS分析表明,材料成分由表面到内部由Ta ->Ta/TiNi梯度变化。Ta涂层含有超过92.5wt%的Ta, TiNi基体含有超过98.69wt%的TiNi。沿铺粉方向,两种不同材料制成的固体-粉末或固体-固体界面附近的小粉末难以清洗,造成界面附近的微污染区域。该研究也为镀Ta涂层的TiNi合金零件的集成制造提供了一种新的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Advances in Mechanical Engineering
Advances in Mechanical Engineering 工程技术-机械工程
CiteScore
3.60
自引率
4.80%
发文量
353
审稿时长
6-12 weeks
期刊介绍: Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering
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