Mechanical and shape memory properties of Ni43Co7Mn39Sn11 alloy compacts fabricated by pressureless sintering
Mechanical and shape memory properties of Ni43Co7Mn39Sn11 alloy compacts fabricated by pressureless sintering
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DOI：
10.1016/j.scriptamat.2010.08.046
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发表时间：
2010-12
影响因子：
6
通讯作者：
K. Ito;W. Ito;R. Umetsu;I. Karaman;K. Ishida;R. Kainuma
中科院分区：
文献类型：
--
作者：
K. Ito;W. Ito;R. Umetsu;I. Karaman;K. Ishida;R. Kainuma
研究了通过无压烧结制备的 Ni43Co7Mn39Sn11 变磁形状记忆烧结体的机械和形状记忆性能。与传统感应熔炼获得的样品相比，随着烧结时间的推移，孔隙率急剧下降，延展性显着增强。此外，在1173K下烧结144h的试样的断裂应变与放电等离子烧结高密度烧结体的断裂应变几乎相同。有趣的是，形状记忆效应随着孔隙率的降低而降低。
Mechanical and shape memory properties of Ni43Co7Mn39Sn11metamagnetic shape memory sintering compacts, fabricated by pressureless sintering, were investigated. With sintering time the porosity drastically decreases and the ductility is significantly enhanced compared to the samples obtained by conventional induction melting. Moreover, the fracture strain in the specimen sintered at 1173K for 144h is almost the same as that in the high density sintering compacts by spark plasma sintering. Interestingly, the shape memory effect decreases with decreasing porosity.