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Tb对Ni₅₀Mn₂₉Ga₂₁合金的组织和磁感生应变的影响

Effect of terbium on structure and magnetostriction strain of Ni-Mn-Ga

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【Author】 WANG Zhi-cheng~(1,2),ZHAO Zeng-qi~2,FEN Yan~3,WU Shuang-xia~2,JIANG Li-peing~2 (1.Materials Science and Engineering School, UST Inner Mongolia, Baotou 014010,China;2.Baotou Research Instiute of Rare Earth,Baotou 014010,China;3.Seamless steel Tubing Mill,Baotou Iron and Steel(Group)Co.,Baotou 014010,China)

【机构】内蒙古科技大学材料科学与工程学院；包头稀土研究院；包头钢铁(集团)公司无缝钢管厂；包头稀土研究院内蒙古包头014010包头稀土研究院；内蒙古包头014010；内蒙古包头； 014010； 014010；

【摘要】运用X光衍射的方法研究了稀土元素Tb对形状记忆合金Ni50Mn29Ga21金相组织的影响.结果表明,稀土元素Tb的加入可以明显地减小合金的晶粒尺寸,提高马氏体在合金中的含量,但是也使得合金的磁感生应变在经历一段上升后发生回落.更多还原

【Abstract】 Effect of terbium on the metallographic structure of Ni₅₀Mn₂₉Ga₂₁ magnetic memory alloy was investigated by means of XRD,which showed that the grain size of the alloy decreased dramatically and the content of martensite in the alloy increased with increasing the addition of Tb.Resultant force of grain size and content of martensite made the magnetostriction strain of alloys increasing（x<0.1%）and then decreasing.更多还原