Phase Transformation and Magnetic-Field-Induced Strain in Ni50-xMn29+xGa21(x=0-4) Alloys

被引：0

作者：

Xue Shuangxi ^{[1
]}

Feng Shangshen ^{[1
]}

Cai Peiyang ^{[1
]}

Li Qintao ^{[1
]}

Wu Jianbo ^{[1
]}

Zhou Ying ^{[1
]}

Chen Weiping ^{[1
]}

机构：

[1] Taizhou Univ, Fac Phys & Elect Engn, Taizhou 318000, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2010年 / 39卷 / 10期

关键词：

Ni-Mn-Ga alloy; directional solidification; martensitic transformation; magnetic-induced strains; SHAPE-MEMORY; MARTENSITIC-TRANSFORMATION; SINGLE-CRYSTAL;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ni50-xMn29+xGa21(x=0-4) polycrystalline alloys were prepared by the technique of directional solidification and the effect of the component on the martensitic transformation temperature and magnetic properties of the alloys was analyzed. The results show that the martensitic transformation temperatures (M-s) increase and the martensitic transformation hysteresis (Delta T) decrease with increasing of x when x <= 3. When x=3, M-s is increased to 309.6 K and the Curie temperature T-c is 360 K. But with x increasing continuously to 4, M-s decreases to 283.2 K and T-c is 362 K. The Ni47Mn32Ga21 alloy exhibits a large saturated magnetic-induced strain of -700x10(-6) without stress at room temperature, whose corresponding magnetization intensity is 4.5x10(5) A/m.

引用

页码：1764 / 1768

页数：5

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