| Large magnetic-field-induced strains in rare earth polycrystalline Ni-Mn-Ga |
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| 作者姓名： | ZHAOZengqi WUShuangxia WANGFangshu WANGQiang JIANGLiping WANGXinlin |
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| 作者单位： | [1]BaotouResearchInstituteofRareEarth,Baotou014010,China [2]DepartmentofFunctionalMaterials,CentralIronandSteelResearchInstitute,Beijing100081,China |
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| 基金项目： | This work was financially supported by the 863 Program of China (No. 2001AA327022)，the Natural Science Foundation of Inner Mongolia (No. 200308020214) |
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| 摘 要： | The magnetic-field-induced strains (MFIS) of polycrystalline Ni50Mn29Ga21 alloys containing Tb were studied. A large MFIS of-1.10% was obtained under compressive prestress conditions. The addition of Tb can fine the crystal grains, enhance the bending strength obviously, and make MFIS increase further, indicating that a moderate amount of Tb does not hinder twin boundary motion and it conversely makes the material more practical.
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| 关 键 词： | 稀土元素晶体 镍合金 锰 镓 磁场感应变形 |
Large magnetic-field-induced strains in rare earth polycrystalline Ni-Mn-Ga |
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| ZHAOZengqi WUShuangxia WANGFangshu WANGQiang JIANGLiping WANGXinlin.Large magnetic-field-induced strains in rare earth polycrystalline Ni-Mn-Ga[J].Rare Metals,2004,23(3):241-245. |
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| Authors: | ZHAO Zengqi WU Shuangxia WANG Fangshu WANG Qiang JIANG Liping WANG Xinlin |
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| Affiliation: | 1. Baotou Research Institute of Rare Earth, B aotou 014010, China
2. Department of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, China |
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| Abstract: | The magnetic-field-induced strains (MFIS) of polycrystalline Ni_(50)Mn_(29)Ga_(21) alloys containing Tb were studied. A large MFIS of-1.10% was obtained under compressive prestress conditions. The addition of Tb can fine the crystal grains, enhance the bending strength obviously, and make MFIS increase further, indicating that a moderate amount of Tb does not hinder twin boundary motion and it conversely makes the material more practical. |
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| Keywords: | metal materials magnetic-field-induced strain rare earths Ni-Mn-Ga alloy |
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