| Ti-Ni-Gd形状记忆合金的马氏体相变 |
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| 引用本文： | 刘爱莲,吴冶,蔡伟,李民.Ti-Ni-Gd形状记忆合金的马氏体相变[J].功能材料,2006,37(11):1765-1767. |
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| 作者姓名： | 刘爱莲 吴冶 蔡伟 李民 |
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| 作者单位： | 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;驻黎明公司军代表室,辽宁,沈阳,110000 |
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| 摘 要： | 采用电弧炉制备了添加不同Gd含量的Ti-Ni-Gd三元合金,利用DSC、X射线衍射仪研究了重稀土元素Gd对Ti-50.7Ni合金的马氏体相变的影响.结果表明添加重稀土元素Gd后,Gd含量不超过2%(原子分数)时,淬火态的Ti-Ni-Gd三元合金中分别发生两步马氏体相变,Gd含量为10%(原子分数)时,合金中发生了一步马氏体相变,同时稀土元素Gd的加入能明显提高Ti-Ni合金的相变温度.Ti-Ni-Gd合金中马氏体仍为B19'单斜结构,而且马氏体的点阵参数随Gd的加入发生明显变化,晶胞产生畸变.
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| 关 键 词： | Ti-Ni形状记忆合金 稀土元素Gd 马氏体相变 |
| 文章编号： | 1001-9731(2006)11-1765-03 |
| 收稿时间： | 2006-04-25 |
| 修稿时间： | 2006-08-21 |
Martensitic transformation of Ti-Ni-Gd shape memory alloy |
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| LIU Ai-lian,WU Ye,CAI Wei,LI Min.Martensitic transformation of Ti-Ni-Gd shape memory alloy[J].Journal of Functional Materials,2006,37(11):1765-1767. |
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| Authors: | LIU Ai-lian WU Ye CAI Wei LI Min |
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| Affiliation: | 1. Department of Material Physics and Chemistry,School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001,China; 2. Commissary of the PLA in Shenyang Liming Aero-Engine Group Corporation,Shenyang 110000,China |
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| Abstract: | Martensitic transformation of (Ti_(49.3)Ni_(50.7))_(1-x)Gd_x(x=0,1at%,2at%,10at%) shape memory alloys are investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC).The results show that the martensitic transformation type differs with different content of Gd adding to Ti-Ni alloys.In the alloy con- taining 2at% Gd,a two-step martensitic transformation is observed,whereas a one-step martensitic transforma- tion is observed in the alloy containing 10at% Gd.The martensitic transformation temperatures increase rapidly with increasing Gd content to 2at%,and then tend to be stable when the Gd content is further increased.B19' martensite is observed in Ti-Ni-Gd alloys and its lattice is distorted with Gd addition. |
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| Keywords: | TiNi shape memory alloys rare earth Gd martensitic transformation |
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