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| 稀土元素对富Ni的Ti-Ni形状记忆合金马氏体相变的影响 | |
| 引用本文： | 徐家文,刘爱莲,蔡伟.稀土元素对富Ni的Ti-Ni形状记忆合金马氏体相变的影响[J].材料科学与工程学报,2007,25(6):958-960. |
| 作者姓名： | 徐家文 刘爱莲 蔡伟 |
| 作者单位： | 1. 黑龙江科技学院,材料科学与工程学院,黑龙江,哈尔滨,150027 2. 黑龙江科技学院,材料科学与工程学院,黑龙江,哈尔滨,150027;哈尔滨工业大学,材料科学与工程学院,材料物理与化学系,黑龙江,哈尔滨,150001 3. 哈尔滨工业大学,材料科学与工程学院,材料物理与化学系,黑龙江,哈尔滨,150001 |
| 摘 要： | 在本文中,向Ti-50.7at.%Ni合金分别加入1at.%的稀土元素Ce、Dy、Gd和Y,并利用X射线和示差扫描热分析研究了稀土掺杂对富Ni的Ti-Ni合金马氏体相变行为的影响.结果表明:向富Ni的Ti-Ni合金中添加稀土元素能使合金的马氏体相变温度显著增加,且添加稀土Ce使合金相变温度的增幅最大.此外,Ti-50.2Ni-1Gd和Ti-50.2Ni-1Y合金中发生两步马氏体相变,而添加Ce和Dy的Ti-Ni合金中仍只发生一步马氏体相变. |
| 关 键 词： | Ti-Ni合金 马氏体相变 稀土元素 martensitic transformation Ti-Ni shape memory alloy rare earth element |
| 文章编号： | 1673-2812（2007）06-0958-03 |
| 收稿时间： | 2006-06-11 |
| 修稿时间： | 2007-07-18 |
Effect of Rare Earth Element Addition on Martensitic Transformation of a Ni-rich Ti-Ni Shape Memory Alloy |
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| XU Jia-wen,LIU Aian-lian,CAI Wei.Effect of Rare Earth Element Addition on Martensitic Transformation of a Ni-rich Ti-Ni Shape Memory Alloy[J].Journal of Materials Science and Engineering,2007,25(6):958-960. | |
| Authors: | XU Jia-wen LIU Aian-lian CAI Wei |
| Abstract: | 1at% Ce, Dy, Gd and Y are added to Ti-50.7at% Ni alloy individually and the effect of rare earth additions on martensitic transformation of the TiNi alloy are investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results show that rare earth additions can increase martensitic transformation temperatures obviously. Especially the effect of Ce addition in Ms is noticeable. Two-step martensitic transformation is observed in Ti-50.2Ni-1Gd and Ti-50.2Ni-1Y alloys, and one-step martensitic transformation is in TiNiRE(RE = Ce, Dy) alloy. |
| Keywords: | martensitic transformation Ti-Ni shape memory alloy rare earth element |
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