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.
参考文献
| [1] | Eckelmeyer K H .[J].Scripta Metallurgica et Materialia,1976,10:667. |
| [2] | Hwang C M;Meichle M;Salamon M B et al.[J].Philosophical Magazine A:Physics of Condensed Matter:Structure,Defects and Mechanical Properties,1983,47:31. |
| [3] | Nam T H;Saburi T;Nakata Y et al.[J].Materials Transactions,1990,31:1050. |
| [4] | Meng X.L.;Zheng Y.F. .Shape memory properties of the Ti_(36)Ni_(49)Hf_(15) high temperature shape memory alloy[J].Materials Letters,2000(2):128-132. |
| [5] | Wei Cal,Kazuhiro Otsuka.Martensite Aging Effect and Thermal Cyclic Characteristics in Ti-Pd and Ti-Pd-Ni High Temperature Shape Memory Alloys[J].材料科学技术学报(英文版),2001(03):359-362. |
| [6] | Hsieh SF.;Wu SK. .Room-temperature phases observed in Ti53-xNi47Zrx high-temperature shape memory alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):276-282. |
| [7] | 刘震云;孙宝德;林俊良 .[J].金属热处理学报,1996,17(07) |
| [8] | Liu A L;Meng X L;Cai W.[A].北京,2004:1973. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%