The as-forged Ti3Al-based alloy and TC11 titanium alloy were welded by electron beams in vacuum, and then they were processed using near isothermal forging and gradient heat treatment. The experimental results show that the near isothermal forging processing parameters have little effect on the phase constitution of the weld. The weld consists of Ti2AlNb, MoNb, Nb3Al, and TiAl3 phases as well as the two main phases of α and α2. However, the near isothermal forging processing parameters have significant effect on the shape, size, and volume fraction of α and α2 phases of the welding interface. The sizes of the α and α2 phases increase as the strain rate decreases. Because the distor-tion energy of the lattice and the volume fraction of the grains occurring in dynamic recrystallization increase with an increase in deformation,the sizes of the α and α2 phases of the welding interface decrease.
参考文献
| [1] | Mudali UK.;Rao BMA.;Shanmugam K.;Natarajan R.;Raj B. .Corrosion and microstructural aspects of dissimilar joints of titanium and type 304L stainless steel[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2003(1):40-48. |
| [2] | 姚泽坤,张梅琳,梁新民,郭鸿镇.热力耦合作用对TAC-1B和TC11合金焊接界面硬度和显微组织的影响[J].焊接学报,2004(02):125-128. |
| [3] | Yao Z K;Guo H Z;Cui Z S;Zhang M L.The influence of hot working process on mechanical properties of Ti3Al-Ti dual alloy welded by electron beam welding in vacuum[A].Hamburg,2004:715. |
| [4] | Yao Z K;Liang X L;Guo H Z;Cheng S K,and Zhang H .Effect of hot and force factors on the microhardness and elements diffusion at Ti3Al/TC4 seam[J].Rare Met Mater Eng(in Chinese),2005,34:907. |
| [5] | Yao Z K;Liang X M;Guo H Z;Wang B,Li G H,Qiao Z Q,and Zhang H.The influence of processing parameters on mechanical properties and microstructure of welding zone for Ti3Al-TC4 dual alloy[A].北京,2004:445. |
| [6] | Zhang H T;He P;Feng J C;Wu H Q .Interracial microstructure and strength of the dissimilar joint Ti3Al/TC4 welded by the electron beam process[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2006,425:255. |
| [7] | Ma H;Li Y;Wang J;Yin Y .Analysis of the microstructure and phase constitution of the Fe3Al/18-8 diffusion interface after re-heating[J].Materials Chemistry and Physics,2006(2/3):319-323. |
| [8] | Wang J;Li Y J;Liu P;Wu H Q .Microstructure and performance in diffusion-welded joints of Fe3Al/Q235 carbon steel[J].Journal of Materials Processing Technology,2004,145:294. |
| [9] | Regev M;Berger S B;Weiss Z .Investigation of microstructure,mechanical and creep properties of weldments between T91and T22 stresses[J].Welding Journal,1996,75(08):261s. |
| [10] | Liu P S;Baeslack W A Ⅲ;Hurley J .Dissimilar alloy laser beam welding of titanium:Ti-6Al-4V to beta-CTM[J].Welding Journal,1994,73(07):175s. |
| [11] | Lee HT;Jeng SL;Yen CH;Kuo TY .Dissimilar welding of nickel-based alloy 690 to SUS 304L with Ti addition[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(1):59-69. |
| [12] | Jeng SL;Lee H;Rehbach WP;Kuo TY;Weirich TE;Mayer JP .Effects of Nb on the microstructure and corrosive property in the Alloy 690-SUS 304L weldment[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):229-238. |
| [13] | Mourer D P;Raymond E;Ganesh S;Hyzak J.Dual alloy development[A].Philadelphia Pennsylvania,1996:637. |
| [14] | Klotz U E;Henderson M B;Wilcock I M;Davies S,Janschek P,Roth M,Gasser P,and McColvin .Manufacture and microstructural characterisation of bumetallic gas turbine discs[J].Materials Science and Technology,2005,21(02):218. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%