利用真空电子束焊机对TC11钛合金进行试验研究.采用光学显微镜及扫描电镜观察并分析接头不同区域的组织特征,并对焊接接头进行了显微硬度和力学性能测试,同时采用盲孔法对试样的残余应力进行测试.结果表明:TC11钛合金电子束焊接头焊缝区的组织特征为典型的柱状晶,晶粒内为交错排列细密的α’相,而热影响区组织为均匀的α'相和原始α+β转相的混合物.显微硬度与组织呈现较好的对应关系,即焊缝及热影响区的显微硬度高于母材.接头的冲击韧性比母材提高了20％,而抗拉强度为母材的98％左右.残余应力为以纵向应力为主的单向拉伸应力状态,横向残余应力数值则较小.
参考文献
| [1] | Irisarri A M;Barreda J L;Azpiroz X .[J].Vacuum,2010,84(03):393. |
| [2] | Saresh N;Gopalakrishna Pillai M;Jose Mathew .[J].Journal of Materials Processing Technology,2007,192:83. |
| [3] | Zhang Jing;Tan Chengwen;Ren Yu .[J].Transactions of Nonferrous Metals Society of China,2011,21:39. |
| [4] | Sun Z;Karppi R .[J].Journal of Materials Processing Technology,1996,59(03):257. |
| [5] | Barreda, J.L.;Azpiroz, X.;Irisarri, A.M. .Influence of the filler metal on the mechanical properties of Ti-6Al-4V electron beam weldments[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2010(1):10-15. |
| [6] | Barreda J L;Santamaria F;Azpiroz X .[J].Vacuum,2001,62(02):143. |
| [7] | Balasubramanian T S;Balasubramanian V;Muthumanickam M A .[J].Materials & Design,2011,32(08):4509. |
| [8] | Qi Yunlian;Deng Ju;Hong Quan .[J].Materials Science and Engineering,2000,280(01):177. |
| [9] | Mohandas T;Banerjee D;Kutumba Rao V V .[J].Materials Science and Engineering,1998,254(01):147. |
| [10] | Tan Lijun;Yao Zekun;Zhou Wei et al.[J].Aerospace Science and Technology,2010,14(05):302. |
| [11] | 杨航航,姚泽坤,高峻,郭鸿镇,刘莹莹,王敏.梯度热处理对Ti_3Al/TC11双合金焊接界面组织和显微硬度的影响[J].稀有金属材料与工程,2010(01):22-26. |
| [12] | 陈勇;高德平;陈士煊 .[J].物理测试,2001,37(10):427. |
| [13] | HU Mei-juan,LIU Jin-he.Effects of zonal heat treatment on residual stresses and mechanical properties of electron beam welded TC4 alloy plates[J].中国有色金属学会会刊（英文版）,2009(02):324-329. |
| [14] | 吴会强,冯吉才,何景山,张秉刚.电子束焊接热输入对Ti-6Al-4V组织结构的影响[J].焊接学报,2004(05):41-44. |
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%