采用粉末冶金和压力加工方法制备了不同La2O3含量Mo-La2O3板材.Mo-La2O3板材和纯钼(PMo)板材经高温热处理后在室温下进行静态拉伸试验.结果表明,La2O3的添加不仅提高了钼板的强度,而且对钼板的延性具有显著的改善作用,Mo-La2O3板材的纵向塑性在20%以上,最高达到46%.采用SEM和TEM的观察结果对钼板的拉伸行为进行了解释.
参考文献
| [1] | Falbriard P .Mo and Mo Alloy for the First Wall of Nuclear Reactor[J].International Journal of Refractory Metals and Hard Materials,1991,10(01):37-42. |
| [2] | Endo M;Kimura K;Udagawaetal T .The Effects of Doping Molybdenum Wire with Rare-Earth Elements[J].High Temperature and High Pressure,1990,21:129-137. |
| [3] | Zhang Jiuxing;Zhou Meiling;Liu Danmin et al.Fracture Toughness of Sintered Mo-La2O3 Alloy and the Toughening Mechanisms[J].International Journal of Refractory Metals and Hard Materials,1999,17:405-409. |
| [4] | 周美玲;李竣;左铁镛 et al.Microstucture and Properties of Molybdenum Wires Doped with La[J].中国有色金属学报,1994,4(03):57-62. |
| [5] | 罗丰华,周美玲,左铁镛.6T51高频加热电子管用碳化La2O3-Mo阴极的研究[J].稀有金属材料与工程,2003(01):58-62. |
| [6] | Scibetta M;Chaouadi R;Puzzolante J L .High Temperature Fatigue Behaviour of TZM Molybdenum Alloy under Mechanical and Thermomechanical Cyclic Loads[J].Journal of Nuclear Materials,2000,283/287:455-460. |
| [7] | M. K. Miller;E. A. Kenik;M. S. Mousa .Improvement in the ductility of molybdenum alloys due to grain boundary segregation[J].Scripta materialia,2002(4):299-303. |
| [8] | 张久兴;周美玲 et al.Effect of La2O3 on the Recystallization of Molybdenum Wires[J].金属学报,1996,9(02):94-98. |
| [9] | MYOUNG KI YOO;YUTAKA HIRAOKA;JU CHOI .Recrystallization of Molybdenum Wire Doped with Lanthanum Oxide[J].International Journal of Refractory Metals & Hard Materials,1995(4):221-227. |
| [10] | 张家扬 .The Effect of Temperature on Ductility of Molybdenum[J].钨钼材料,1981,6:9-15. |
| [11] | 肖纪美.金属的韧性与韧化[M].上海:上海科学技术出版社,1982:220-226. |
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%