用差式扫描热分析和X射线衍射方法,研究了Zr41Ti14Cu12.5Ni10Be22.5块状非晶合金的相变动力学.结果表明:在温度低于500 ℃的范围内,Zr41Ti14Cu12.5Ni10Be22.5块状非晶合金中的晶化相可大体分为α相和β相(主要为Ti2Ni和Zr2Cu等).在晶化 初期α相的激活能较小 , 为159 kJ/mol,它随着晶化分数X的增加而提高,在X为90 %时达到最大值220 kJ/mol;β相的晶化激活能在X为5 %～60 %的范围内变化不大,然后随晶化分数X的增加而提高,X为65 %时达到最大值257.35 kJ/mol.
参考文献
| [1] | Wang W K;Yan Z H .Amorphous Cooling of Metal by Solid- State Reaction[J].Journal of Materials Science Letters,1989,8(06):817-820. |
| [2] | Wang WH.;Friedrich S.;Wei Q. .Microstructure, decomposition, and crystallization in Zr41Ti14Cu12.5Ni10Be22.5 bulk metallic glass[J].Physical Review.B.Condensed Matter,1998(14):8211-8217. |
| [3] | Tao Zhang;Akihisa Inoue .Density, thermal stability and mechanical properties of Zr-Ti-Al-Cu-Ni bulk amorphous alloys with high Al plus Ti concentrations[J].Materials transactions,1998(8):857-862. |
| [4] | Yan Xin Zhuang;Wei Hua Wang .Effects of relaxation on glass transition and crystallization of ZrTiCuNiBe bulk metallic glass[J].Journal of Applied Physics,2000(11):8209-8211. |
| [5] | Peker A;Johnson W L .Highly processable metallic gla-ss:Zr41.2Ti31.8Cu12.5Ni10.0Be22.5[J].Applied Physics Letters,1993,63(09):2342-2344. |
| [6] | Akihisa Inoue;Tao Zhang .Fabrication of Bulky Zr-Based Glassy Alloys by Suction Casting into Copper Mold[J].Materials Transactions, JIM,1995(9):1184-1187. |
| [7] | Inoue A .High Strength Bulk Alloys with Low Critical Cooling Rates[J].Materials Transactions,1995,36(09):866-875. |
| [8] | HaysCC;Kim C P;Johnson W L .Large Supercooled Liquid Re- gion and Phase Separation in the Zr-Ti-Cu-Ni-Be Bulk Metallic Glass[J].Applied Physics Letters,1999,75(16):1089-1091. |
| [9] | Yoshihito Kawamura;Akihisa Inoue .Newtonian viscosity of supercooled liquid in a Pd_(40)Ni_(40)P_(20) metallic glass[J].Applied physics letters,2000(8):1114-1116. |
| [10] | ZHANG J W;Zhang X Y;Xiao F R .Influences of Additive Ele- ments Nb and Mo on the Crystallization Process of Amorphous Alloy Fe76.5Cu1Si13.5B9[J].Materials Letters,1998,36(03):223-228. |
| [11] | 刘建华,张静武,张瑞军,张湘义.Sm8Fe85Si2C5非晶合金的晶化动力学[J].特殊钢,1999(05):29-31. |
| [12] | Zhang X Y;Zheng Y Z .The Ordering of the α-Fe(Si) Phase in Fe73.5Cu1Nb3Si13.5B9 Annealed Alloy[J].Journal of Materials Research,1995,9(04):294-296. |
| [13] | Wang W H .Role of Small Atoms in the Formation and Proper- ties of Zr-Ti-Cu-Ni-B Bulk Amorphous Alloys[J].Journal of Applied Physics,1999,84(06):8820-8827. |
| [14] | Jorg F. Loffler;Sven Bossuyt;Stephen C. Glade .Crystallization of bulk amorphous Zr-Ti(Nb)-Cu-Ni-Al[J].Applied physics letters,2000(4):525-527. |
| [15] | 李余增.热分析[M].北京:清华大学出版社,1987 |
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%