研究了热变形对Ti-24Al-15Nb-1.5Mo/TC 11双合金焊接界面持久性能的影响.在梯度热处理条件下,变形量为40％的试样持久寿命优于其他试样.在持久试验过程中,焊缝以及合金的热影响区是薄弱区域,断裂多发生在此.当焊缝以及合金热影响区中含有晶界α相时会降低持久性能;同时,Ti-24Al-15Nb-1.5Mo合金基体中的粗大α2相也是导致持久性能降低的不利因素.由于在持久试验过程中元素继续扩散,可以发现持久试验后Nb元素在焊缝中的含量明显增加.
参考文献
| [1] | Christoph Leyens;Manfred Peters.Titanium and Titanium Alloys[M].Weinheim:Wiley-VCH Verlag GmbH & Co.KGaA,2003 |
| [2] | Cao Jingxia;Bai Fang;Li Zhenxi .[J].Materials Science and Engineering A,2006,424(1-2):47. |
| [3] | Feng Jicai;Wu Huiqiang;He Jingshan et al.[J].Materials Characterization,2005,54(02):99. |
| [4] | Zhang Yonggang;Han Yafang;Chen Guoliang.Structural Intermetallics(in Chinese)[M].北京:国防工业出版社,2001:785. |
| [5] | Huang, LJ;Geng, L;Li, AB;Cui, XP;Li, HZ;Wang, GS .Characteristics of hot compression behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with an equiaxed microstructure[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):136-143. |
| [6] | Sun Z;Karppi .[J].Journal of Materials Processing Technology,1996,59(03):257. |
| [7] | He Jingshan;Wu Qingsheng;Zhang Binggang et al.[J].Rare Metals,2007,26(Spec):242. |
| [8] | Liu Yingying;Yao Zekun;Yang Hanghang et al.[J].Rare Metal Materials and Engineering,2010,39(02):362. |
| [9] | 刘莹莹,姚泽坤,杨航航,秦春,郭鸿镇.热处理对Ti3 Al/TC11双合金盘拉伸性能与组织的影响[J].航空材料学报,2009(04):21-26. |
| [10] | Tan L J;Yao Z K;Wang T et al.[J].Materials Science and Technology,2011,27(08):1315. |
| [11] | Tan L J;Yao Z K;Ning Y Q et al.[J].Materials Science and Technology,2011,27(09):1469. |
| [12] | Mohandas T;Kutumbarao VV;Banerjee D .Elevated temperature properties of electron beam welds of an alpha + beta titanium alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(1/2):217-224. |
| [13] | Zhang Hongtao;He Peng;Feng Jicai et al.[J].Materials Science and Engineering A,2006,425(1-2):255. |
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%