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| Ni53Mn22Ga25磁性形状记忆合金的相变内耗 | |
| 引用本文： | 赵增祺,熊玮,吴双霞,王新林. Ni53Mn22Ga25磁性形状记忆合金的相变内耗[J]. 钢铁研究学报, 2004, 16(2): 63-66 |
| 作者姓名： | 赵增祺 熊玮 吴双霞 王新林 |
| 作者单位： | 1. 包头稀土研究院稀土冶金及功能材料国家工程研究中心,内蒙古,包头,014010;钢铁研究总院功能材料研究所,北京,100081 2. 包头稀土研究院稀土冶金及功能材料国家工程研究中心,内蒙古,包头,014010 3. 钢铁研究总院功能材料研究所,北京,100081 |
| 基金项目： | 国家"863"计划资助项目(AA200132722); 内蒙古自然科学基金资助项目(200308020214) |
| 摘 要： | 研究了Ni53Mn22Ga25磁性记忆合金在190～390K温度范围的内耗行为。结果表明．当合金发生正、逆马氏体相变时出现明显的内耗峰,并伴随模量变化出现极小值。马氏体相变后继续降温。在215K附近出现新的内耗峰,模量明显增高。合金在居里温度发生顺磁及铁磁正反转变时．内耗及模量均不发生变化。对上述现象进行了分析和讨论。 |
| 关 键 词： | 内耗 相变 Ni—Mn—Ga合金 磁性形状记忆合金 |
| 文章编号： | 1001-0963(2004)02-0063-04 |
| 修稿时间： | 2003-07-14 |
Internal Friction Associated with Phase Transformation in Ni53Mn22Ga25 Magnetic Shape Memory Alloy |
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| ZHAO Zeng-qi. Internal Friction Associated with Phase Transformation in Ni53Mn22Ga25 Magnetic Shape Memory Alloy[J]. Journal of Iron and Steel Research, 2004, 16(2): 63-66 | |
| Authors: | ZHAO Zeng-qi |
| Affiliation: | ZHAO Zeng-qi~ |
| Abstract: | The internal friction of Ni_(53)Mn_(22)Ga_(25) magnetic shape memory alloy have been studied in a temperature range of 190-390 K. It has been shown that a prominent internal friction maximum and modulus minimum are corresponding to martensitic transformation and the reverse transformation. After the martensitic transformation, another internal friction peak is appeared at about 215 K, with a increased modulus. There are no obvious changes in internal friction and modulus when the transformation between paramagnetism and ferromagnetism takes place at Curie temperature (T_c). Above mentioned phenomena have been discussed. |
| Keywords: | internal friction phase transformation Ni-Mn-Ga alloy magnetic shape memory alloy |
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