Rapid solidification and advanced manufacturing of Cu-based shape memory alloys with complex geometries

复杂几何形状铜基形状记忆合金的快速凝固与先进制造

• 批准号: 223525886
• 负责人: Professor Dr.-Ing. Jürgen Eckert
• 金额: --
• 依托单位: Lehrstuhl für Materialphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/223525886?language=en
• 关键词: Rapid; solidification; advanced; manufacturing; Cu

In this project, multicomponent Cu-based shape memory alloys (SMAs) shall be processed by the relatively new technique of selective laser melting, which is expected to result in components with advanced mechanical properties. The alloy powder required for this manufacturing process is synthesised by spray forming. The goals of this project are to study the influence of two rapid solidification methods (spray forming and SLM) on the microstructure and the shape memory effect of two Cu-based SMAs, viz. Cu-11.85Al-3.2Ni-3Mn and Cu-11.35Al-3.2Ni-3Mn-0.5Zr. The mechanical properties shall be analysed with focus on the interrelation between the microstructure (e.g. phase formation, grain sizes, second phase precipitates etc.) and the details of the martensitic transformation (i.e. shape recovery, superelasticity, strength etc.). Moreover, it shall be evaluated whether or not SLM is a competitive costefficient alternative for manufacturing products like stents or actuators/sensors of shape memory alloys with advanced mechanical properties. Considering that high cooling rates can be reached by this method, the influence of rapid solidification on phase formation and grain size, mechanical properties and shape memory effect of Cu-based shape memory alloys will be studied.

在此项目中，基于多组分的CU形状存储合金（SMA）应通过相对较新的选择性激光熔化技术来处理，这有望导致具有先进的机械性能的组件。该制造过程所需的合金粉是通过喷雾形成合成的。该项目的目标是研究两种快速固化方法（喷雾和SLM）对微观结构的影响以及两个基于Cu的SMA的形状记忆效应，即。 CU-11.85AL-3.2NI-3MN和CU-11.35AL-3.2NI-3MN-0.5ZR。应重点分析机械性能（例如相形成，晶粒大小，第二相沉淀等）以及马氏体转化的细节（即形状恢复，超弹性，强度等）。此外，应评估SLM是否是具有先进机械性能的形状内存合金等制造产品的竞争成本效益替代方案。考虑到可以通过这种方法达到高冷却速率，将研究快速凝固对相位形成和晶粒尺寸，机械性能以及基于Cu的形状记忆合金的形状记忆效应的影响。

项目成果

Atomization and Selective Laser Melting of a Cu-Al-Ni-Mn Shape Memory Alloy

• DOI: 10.4028/www.scientific.net/msf.802.343
• 发表时间: 2014-12
• 期刊: Materials Science Forum
• 作者: E. M. Mazzer;C. S. Kiminami;P. Gargarella;R. D. Cava;L. Basilio;C. Bolfarini;W. Botta;J. Eckert;T. Gustmann;S. Pauly

Phase Formation, Thermal Stability and Mechanical Properties of a Cu-Al-Ni-Mn Shape Memory Alloy Prepared by Selective Laser Melting

选择性激光熔化制备Cu-Al-Ni-Mn形状记忆合金的相形成、热稳定性和力学性能

• DOI: 10.1590/1516-1439.338914
• 发表时间: 2015
• 期刊: Materials Research-ibero-american Journal of Materials
• 影响因子: 1.7
• 作者: P. Gargarella;C.S. Kiminami;E.M. Mazzer;R.D. Cava;L.A. Basilio;C. Bolfarini;W. Botta;J. Eckert;T. Gustmann;S. Pauly
• 通讯作者: S. Pauly

Influence of processing parameters on the fabrication of a Cu-Al-Ni-Mn shape-memory alloy by selective laser melting

• DOI: 10.1016/j.addma.2016.04.003
• 发表时间: 2016-07-01
• 期刊: ADDITIVE MANUFACTURING
• 影响因子: 11
• 作者: Gustmann, T.;Neves, A.;Pauly, S.
• 通讯作者: Pauly, S.

Laser surface remelting of a Cu-Al-Ni-Mn shape memory alloy

• DOI: 10.1016/j.msea.2016.03.021
• 发表时间: 2016-04-20
• 期刊: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
• 影响因子: 6.4
• 作者: da Silva, Murillo Romero;Gargarella, Piter;Bolfarini, Claudemiro
• 通讯作者: Bolfarini, Claudemiro