采用搅拌摩擦焊方法对8mm厚的2014Al合金进行了焊接,焊后对接头的微观组织和力学性能及断裂特性进行了分析.研究结果表明,焊核区和轴肩影响区由细小的等轴再结晶组织构成;热机影响区受机械和热的双重作用组织发生了较大程度的变形,在热循环的作用下发生回复反应;热影响区仅受热循环的作用,组织稍微有粗化现象.力学试验表明:焊接速度为150mm/min时,接头的抗拉强度可以达到361MPa,为母材的78%,抗弯强度达到母材的76%.断口形貌分析显示,接头断裂模式为韧性和脆性的混合型断裂.
参考文献
| [1] | MAHONEY M W;RHODES C G .Properties of friction stir welded 7075 T651 aluminum[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,28(07):1955-1964. |
| [2] | Y.S.Sato;H.Kodawa .Microstructural evolution of 6063 aluminum during friction-stir welding[J].Metallurgical and materials transactions. A, physical metallurgy and materials science,1999(9):2429-2437. |
| [3] | LIU G;MURR L E;NIOU C S .Microstructural aspects of the friction stir welding of 60612T6 aluminum[J].Scripta Materialia,1997,37(03):355-361. |
| [4] | Sutton MA.;Yang B.;Reynolds AP.;Taylor R. .Microstructural studies of friction stir welds in 2024-T3 aluminum[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):160-166. |
| [5] | Hanadi G. Salem;Anthony P. Reynolds;Jed S. Lyons .Microstructure and retention of superplasticity of friction stir welded superplastic 2095 sheet[J].Scripta materialia,2002(5):337-342. |
| [6] | Jata K.V.;Semiatin S.L. .Continuous dynamic recrystallization during friction stir welding of high strength aluminum alloys[J].Scripta materialia,2000(8):743-749. |
| [7] | Yutaka S. Sato;Mitsunori Urata;Hiroyuki Kokawa .Retention of fine grained microstructure of equal channel angular pressed aluminum alloy 1050 by friction stir welding[J].Scripta materialia,2001(1):109-114. |
| [8] | Olga Valerio Flores;Christine Kennedy;L. E. Murr;David Brown;Sridhar Pappu;Brook M. Nowak;J. C. McClure .Microstructural issues in a friction-stir-welded aluminum alloy[J].Scripta materialia,1998(5):703-708. |
| [9] | S.Benavides;Y.Li;L.E.Murr;D.Brown;J.C.McClure .Low-temperature friction-stir welding of 2024 aluminum[J].Scripta materialia,1999(8):809-815. |
| [10] | 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. |
| [11] | Seung Hwan C. Park;Yutaka S. Sato;Hiroyuki Kokawa .Effect of micro-texture on fracture location in friction stir weld of Mg alloy AZ61 during tensile test[J].Scripta materialia,2003(2):161-166. |
| [12] | R.S.Mishra;M.W.Mahoney .High strain rate superplasticity in a friction strip processed 7075 Al alloy[J].Scripta materialia,1999(2):163-168. |
| [13] | RHODES C G;MAHONEY M W;BINGEL W H et al.Effect of friction stir welding on microstructure of 7075 aluminum[J].Scripta Materialia,1997,36(01):69-75. |
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%