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.

在这个项目中，多组分铜基形状记忆合金（SMA）将通过选择性激光熔化的相对较新的技术进行处理，这有望产生具有先进机械性能的部件。该制造工艺所需的合金粉末通过喷射成形合成。本课题的目的是研究两种快速凝固方法（喷射成形和SLM）对Cu-11.85Al-3.2Ni-3 Mn和Cu-11.35Al-3.2Ni-3 Mn-0.5Zr两种铜基形状记忆合金组织和形状记忆效应的影响。应分析机械性能，重点关注微观结构（例如，相形成、晶粒尺寸、第二相沉淀物等）以及马氏体转变的细节（即形状恢复、超弹性、强度等）。此外，应评估SLM是否是制造具有先进机械性能的形状记忆合金支架或致动器/传感器等产品的具有竞争力的成本效益的替代方案。考虑到该方法可以获得较高的冷却速度，本文将研究快速凝固对铜基形状记忆合金的相形成、晶粒尺寸、力学性能和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