借助力学性能实验、金相显微镜和透射电镜等手段研究了纯钽的加工硬化速率.研究结果表明:纯钽的宏观加工硬化速率比较低.通过TEM观察,发现变形95%后,纯钽的位错密度都不是很高,存在有位错胞亚结构.其原因可能是因为钽的层错能高,位错容易交滑移,使位错密度降低.根据林位错硬化理论,也可以认为,钽在室温下塑性变形时,滑移系主要为{110}〈111〉,次滑移系的激活比较少,因此穿过主滑移系的林位错密度比较低,位错之间相互作用少,导致钽的加工硬化速率低.
参考文献
| [1] | 刘世友 .钽在高新技术中的应用[J].稀有金属与硬质合金,1998,133(06):55-57. |
| [2] | Γ·В·沙穆素诺夫;В·И·康士坦丁诺夫;卜宝林;刘恩鸿.钽与铌[M].北京:中国工业出版社,1962 |
| [3] | S. M. CARDONNE;P. KUMAR;C. A. MICHALUK .Tantalum and its Alloys[J].International Journal of Refractory Metals & Hard Materials,1995(4):187-194. |
| [4] | 娄燕雄;刘贵材.钽铌译文集[M].长沙:中南工业大学出版社,1987 |
| [5] | Kurt D. Moser .The manufacture and fabrication of tantalum[J].JOM,1999(4):29-31. |
| [6] | Rowe C E D .The use of tantalum in the process industry[J].Journal of The Minerals,Metals & Materials Society,1997,49(01):26-28. |
| [7] | R. W. Buckman Jr. .New applications for tantalum and tantalum alloys[J].JOM,2000(3):40-41. |
| [8] | 吴全兴.钽及其合金的用途[J].稀有金属快报,2002(3):23-24. |
| [9] | Kock W;Paschen P .Tantalum processing properties and application[J].Journal of Metals,1989,12(01):33-40. |
| [10] | Clark J B;Garrett R K Jr;Jungling T L et al.Influence of initial ingot breakdown on the microstructural and textural development of high-purity tantalum[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1991,22A(12):2959-2968. |
| [11] | Zerilli F J;Armstrong R W .Description of tantalum deformation behavior by dislocation mechanics based constitutive relations[J].Journal of Applied Physics,1990,68(04):1580-1591. |
| [12] | M.A. MEYERS;Y.-J. CHEN;F.D.S. MARQUIS .High Strain, -High-Strain-Rate Behavior of Tantalum[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1995(10):2493-2501. |
| [13] | 张新明,张少睿,周卓平,舒永春.钽丝的拉拔及退火织构[J].中国有色金属学报,1999(04):774-778. |
| [14] | 张新明,袁韧,周卓平.硅元素对钽丝再结晶行为的影响[J].中国有色金属学报,2002(06):1104-1108. |
| [15] | 哈宽富.金属力学性质的微观理论[M].北京:科学出版社,1983 |
| [16] | 冯端;王业宁;丘第荣.金属物理[M].北京:科学出版社,1975 |
| [17] | Hupalo M F;Sandim H R Z .The annealing behavior of oligocrystalline tantalum deformed by cold swaging[J].Materials Science and Engineering,2001,318(11):216-223. |
| [18] | 吴斌;杨恒;刘礼华.镍钛合金材料加工硬化的力学性能和机制[J].江苏冶金,1997(04):26-30. |
| [19] | 赖祖涵.金属的晶体缺陷与力学性质[M].北京:冶金工业出版社,1988 |
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%