采用光学显微镜、X射线衍射、DSC、弯曲试验等方法研究了Co-Fe合金的微观组织结构、马氏体相变特性及形状记忆效应.结果表明:Co-Fe合金的记忆效应源自合金中的fcc/hcp马氏体相变;Co-xFe(x=2%～6%,质量分数)合金在x≥5.65%时为单一fcc结构的y相,在x≤5.6时为含有ε马氏体相和γ相的双相组织;该合金的马氏体相变温度随着Fe含量的增加而线性降低,之间关系为:Ms(℃)=417-69.97x(Fe%);Co-4Fe合金的形状记忆可回复应变最大为0.86%,相信通过进一步的热处理和记忆训练,该合金会表现出更好的记忆效应.
参考文献
| [1] | Ullakko K;Huang J K;Kantner C et al.[J].Appl ehys Lett,1996,69:1966. |
| [2] | 刘岩,江伯鸿,周伟敏,王锦昌,冯楚德,谢华清,倪沛汶.一种新型功能晶体Ni2MnGa[J].无机材料学报,2000(06):961-967. |
| [3] | 高志勇.中频发电机组的并车改造[J].轴承技术,2001(01):22. |
| [4] | 柳祝红,吴光恒,王文洪,陈京兰,敖玲,金重勋.内应力对铁磁性形状记忆合金Ni-Mn-Ga马氏体相变路径的影响[J].物理学报,2002(03):640-644. |
| [5] | Wada T;Liang Y C;Kato I H et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2003,361:75. |
| [6] | Kakeshita T;Takeuehi T;Fukuda T et al.[J].Applied Physics Letters,2000,77:1502. |
| [7] | Wuttig M;Li J;Craciunescu C et al.[J].Scripta Materialia,2001,44:2393. |
| [8] | Morito H;Fujita A;Fukamichi K et al.[J].Appl ehys Lett,2002,81:1657. |
| [9] | Li Yan;Jiang Chengbao;Liang Ting et al.[J].Scripta Materialia,2003,48:1255. |
| [10] | Sutou Y;Imano Y;Koeda N et al.[J].Applied Physics Letters,2004,85:4358. |
| [11] | Sozinov A;Likhachev A A;Lanska N et al.[J].Applied Physics Letters,2002,80:1746. |
| [12] | Liu Yan;Zhou Weiming;Qi Xuan et al.[J].Applied Physics Letters,2001,78:3660. |
| [13] | Omori T;Sutou Y;Oikawa K et al.[J].Scripta Materialia,2005,52:565. |
| [14] | Omori T;Ito w;Ando K et al.[J].Materials Transactions,2006,47:2377. |
| [15] | Toshihiro Omori;Yuji Sutou;Katsunari Oikawa .Shape Memory Effect Associated with FCC-HCP Martensitic Transformation in Co-Al Alloys[J].Materials transactions,2003(12):2732-2735. |
| [16] | Liu Yinong;Yang Hong;Liu Yan .[J].ACTA MATERIALIA,2005,53:3625. |
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%