A facile method for producing porous parts with complex geometries from ferromagnetic Ni-Mn-Ga shape memory alloys
A facile method for producing porous parts with complex geometries from ferromagnetic Ni-Mn-Ga shape memory alloys
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DOI：
10.1016/j.matlet.2017.04.112
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发表时间：
2017-08-01
影响因子：
3
通讯作者：
Solomon, C. V.
中科院分区：
文献类型：
--
作者：
Caputo, M. P.;Solomon, C. V.
铁磁形状记忆合金因在磁场存在下产生大应变而闻名。由于外部磁场会产生巨大的应变，Ni-Mn-Ga 是研究最多的 FSMA 之一。最近据报道，多孔多晶 Ni-Mn-Ga 表现出与单晶相当的磁场诱发应变 (MFIS)。此外，Ni-Mn-Ga很脆，因此限制了其制造方法。迄今为止，还没有报道生产具有复杂几何形状的多孔多晶 Ni-Mn-Ga 的方法。本文报道了使用增材制造 (AM) 生产具有复杂几何形状和可逆马氏体转变的多孔 Ni-Mn-Ga。 (C) 2017 Elsevier B.V. 保留所有权利。
Ferromagnetic shape memory alloys are well known for producing large strains in the presence of magnetic fields. Ni-Mn-Ga is one of the most studied FSMA's due to giant strains induced by external magnetic fields. Recently porous polycrystalline Ni-Mn-Ga has been reported to demonstrate magnetic field induced strains (MFIS) comparable to single crystals. Moreover, Ni-Mn-Ga is brittle subsequently limiting the means by which it can be manufactured. To date, no methodologies are reported for producing porous polycrystalline Ni-Mn-Ga with convoluted geometries. This paper reports on the use of additive manufacturing (AM) to produce porous Ni-Mn-Ga with complex geometries and reversible martensitic transformations. (C) 2017 Elsevier B.V. All rights reserved.