研究了C24S-T8铝锂合金搅拌摩擦焊接头力学性能及微观组织.通过焊接工艺参数的优化,获得了无孔洞缺陷、焊缝质量优异的接头,强度系数约82％.拉伸时塑性变形及断裂集中于焊缝处.基材晶粒呈薄饼状,沿轧制方向拉长；焊核区为细小等轴的再结晶晶粒,平均晶粒尺寸约2.3 μm,大部分晶界是大于15°的大角度晶界；热机影响区的晶粒在焊接过程中发生了偏转和变形.C24S-T8铝锂合金基材强化相包括T1相(Al2CuLi)、θ'相(Al2Cu)和S'相(Al2CuMg)；热机影响区及焊核区内强化相完全溶解,造成硬度下降.
参考文献
| [1] | 傅志红,黄明辉,周鹏展,贺地求.搅拌摩擦焊及其研究现状[J].焊接,2002(11):6-10. |
| [2] | Mishra RS;Ma ZY .Friction stir welding and processing[J].Materials Science & Engineering, R. Reports: A Review Journal,2005(1/2):III-0. |
| [3] | M.P. MILES;B.J. DECKER;T.W. NELSON .Formability and Strength of Friction-Stir-Welded Aluminum Sheets[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(11):3461-3468. |
| [4] | Won-Bae Lee;Seung-Boo Jung .The joint properties of copper by friction stir welding[J].Materials Letters,2004(6):1041-1046. |
| [5] | Sakthivel T;Mukhopadhyay J .Microstructure and mechanical properties of friction stir welded copper[J].Journal of Materials Science,2007(19):8126-8129. |
| [6] | J. A. Esparza;W. C. Davis;E. A. Trillo;L. E. Murr .Friction-stir welding of magnesium alloy AZ31B[J].Journal of Materials Science Letters,2002(12):917-920. |
| [7] | Xie GM;Ma ZY;Geng L;Chen RS .Microstructural evolution and mechanical properties of friction stir welded Mg-Zn-Y-Zr alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1-2):63-68. |
| [8] | Won-Bae Lee;Chang-Yong Lee;Myoung-Kyun Kim .Microstructures and wear property of friction stir welded AZ91 Mg/SiC particle reinforced composite[J].Composites science and technology,2006(11/12):1513-1520. |
| [9] | Lee W B;Lee C Y;Chang W S et al.Jung Microstructural investigation of friction stir welded pure titanium[J].Materials Letters,2005,59(26):3315-3318. |
| [10] | Zhang Y;Sato YS;Kokawa H;Park SHC;Hirano S .Microstructural characteristics and mechanical properties of Ti-6Al-4V friction stir welds[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):448-455. |
| [11] | Mironov S;Zhang Y;Sato YS;Kokawa H .Development of grain structure in beta-phase field during friction stir welding of Ti-6Al-4V alloy[J].Scripta materialia,2008(1):27-30. |
| [12] | Thomas W;Threadgill P;Nicholas E .Feasibility of friction stir welding steel[J].Science and Technology of Welding and Joining,1999,4(06):365-372. |
| [13] | Fujii H;Cui L;Tsuji N;Maeda M;Nakata K;Nogi K .Friction stir welding of carbon steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1-2):50-57. |
| [14] | Takehiko Watanabe;Hirofumi Takayama;Atsushi Yanagisawa .Joining of aluminum alloy to steel by friction stir welding[J].Journal of Materials Processing Technology,2006(1/3):342-349. |
| [15] | Bhadeshia H;DebRoy T .Critical assessment:friction stir welding of steels[J].Science and Technology of Welding and Joining,2009,14(03):193-196. |
| [16] | R. Nandan;T. DebRoy;H.K.D.H. Bhadeshia .Recent advances in friction-stir welding - Process, weldment structure and properties[J].Progress in materials science,2008(6):980-1023. |
| [17] | I. Shigematsu;Y.-J. Kwon;K. Suzuki;T. Imal;N. Saito .Joining of 5083 and 6061 aluminum alloys by friction stir welding[J].Journal of Materials Science Letters,2003(5):353-356. |
| [18] | Sang-Woo Song;Byung-Chul Kim;Tae-Jin Yoon;Nam-Kyu Kim;In-Bae Kim;Chung-Yun Kang .Effect of Welding Parameters on Weld Formation and Mechanical Properties in Dissimilar Al Alloy Joints by FSW[J].Materials transactions,2010(7):1319-1325. |
| [19] | Lee WB.;Yeon YM.;Jung SB. .The mechanical properties related to the dominant microstructure in the weld zone of dissimilar formed Al alloy joints by friction stir welding[J].Journal of Materials Science,2003(20):4183-4191. |
| [20] | Yutaka S. Sato;Seung Hwan C. Park;Masato Michiuchi;Hiroyuki Kokawa .Constitutional liquation during dissimilar friction stir welding of Al and Mg alloys[J].Scripta materialia,2004(9):1233-1236. |
| [21] | L. E. Murr;Ying Li;R. D. Flores;Elizabeth A. Trillo;J. C. McClure .Intercalation vortices and related microstructural features in the friction-stir welding of dissimilar metals[J].Materials research innovations,1998(3):150-163. |
| [22] | L. E. Murr .A Review of FSW Research on Dissimilar Metal and Alloy Systems[J].Journal of Materials Engineering and Performance,2010(8):1071-1089. |
| [23] | P. L Threadgill;A. J. Leonard;H. R. Shercliff .Friction stir welding of aluminium alloys[J].International Materials Reviews,2009(2):49-93. |
| [24] | Shukla A;Baeslack W .Study of process/structure/ property relationships in friction stir welded thin sheet Al & # 8211;Cu & # 8211;Li alloy[J].Science and Technology of Welding and Joining,2009,14(04):376-387. |
| [25] | Rao J;Payton E J;Somsen C et al.Where does the lithium go a study of the precipitates in the stir zone of a friction stir weld in a Li-containing 2 ×××series Al alloy[J].Advances in Engineering Materials,2010,12(04):298-303. |
| [26] | Potter D M;Takeshita J A;Holguin M J.Friction stir welded thin wall cryogenic tank skins[A].,2007:736-741. |
| [27] | Lertora E;Gambaro C.AA8090 Al-Li Alloy FSW parameters to minimize defects and increase fatigue life[J].International Journal of Material Forming,2010(03):1003-1006. |
| [28] | Loftus Z;Arbegast W;Hartley P.Friction stir weld tooling development for application on the 2195 Al-Ci-Cu space transportation system external tank[J].ASM International Trends in Welding Research(USA),1999:580-584. |
| [29] | R.W. FONDA;J.F. BINGERT .Precipitation and Grain Refinement in a 2195 Al Friction Stir Weld[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2006(12):3593-3604. |
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