Microstructural, phase transformation and magnetic properties of Ni—Mn—Ga alloy fabricated by spark plasma sintering
Microstructural, phase transformation and magnetic properties of Ni—Mn—Ga alloy fabricated by spark plasma sintering
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DOI：
10.1088/1674-1056/20/4/047503
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发表时间：
2011-04
影响因子：
1.7
通讯作者：
田晓华;隋解和;张欣;冯雪;蔡伟
中科院分区：
文献类型：
--
作者：
田晓华;隋解和;张欣;冯雪;蔡伟
研究了放电等离子烧结制备的Ni-Mn-Ga合金的显微组织、相变和磁性能。结果表明，烧结态和退火态都表现出典型的马氏体相变行为。烧结样品经退火后的马氏体具铁磁性。此外，对断口的研究表明，穿晶断裂有助于提高烧结态Ni-Mn-Ga合金的塑性。此外，还首次研究了烧结Ni-Mn-Ga合金的相变应变。
The microstructural, phase transformation and magnetic properties of Ni—Mn—Ga alloy fabricated using the spark plasma sintering method have been investigated. The results show that both the as-sintered and annealed sintered specimens exhibit typical martensitic transformation behaviours. The martensite of the sintered specimen after annealing exhibits a ferromagnetic nature. Moreover, study of the fracture surface indicates that the transgranular fracture contributes to the higher ductility of sintered Ni—Mn—Ga alloy. In addition, the transformation strain in sintered Ni—Mn—Ga alloy is studied for the first time.