Influence of processing parameters on the fabrication of a Cu-Al-Ni-Mn shape-memory alloy by selective laser melting
Influence of processing parameters on the fabrication of a Cu-Al-Ni-Mn shape-memory alloy by selective laser melting
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DOI：
10.1016/j.addma.2016.04.003
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发表时间：
2016-07-01
影响因子：
11
通讯作者：
Pauly, S.
中科院分区：
文献类型：
--
作者：
Gustmann, T.;Neves, A.;Pauly, S.
该铜基形状记忆合金81.95Cu-11.85Al-3.2Ni-3 Mn（wt.%）的选择性激光熔化（SLM）和参数进行了优化，以获得紧凑，完全马氏体样品与高达99%的高相对密度。除了材料中耗散的能量之外，改变扫描策略并施加额外的重熔步骤。分析了不同工艺参数对整体密度、缺陷分布以及晶粒尺寸的影响。加工工艺对多孔陶瓷的孔隙度、孔隙分布、晶粒尺寸和晶粒形貌有很大的影响。因此，SLM允许在制造期间有针对性地操纵微结构。同时，这项工作强调的重要性，建立适当的工艺参数，生产高质量的样品。(C)2016爱思唯尔B. V.保留所有权利。
The Cu-based shape-memory alloy 81.95Cu-11.85Al-3.2Ni-3Mn (wt.%) was processed by selective laser melting (SLM) and the parameters were optimised to obtain compact, fully martensitic samples with a high relative density of up to 99%. Next to the energy dissipated in the material, the scanning strategy was varied and an additional remelting step was applied. The influence of the different processing parameters on the overall density, the defect distribution as well as the grain sizes was then analysed. The processing technique has a strong influence on the degree of porosity and the distribution of the pores, the grain size as well as the grain morphology. SLM thus allows the targeted manipulation of microstructures during manufacturing. Simultaneously, this work stresses the importance of establishing the proper processing parameters for producing high-quality samples. (C) 2016 Elsevier B.V. All rights reserved.