搅拌摩擦焊的旋转速度对接头焊缝形貌、微观组织和力学性能均有较大的影响.采用搅拌摩擦焊方法对5 mm厚的(WC+ B4C)p/6063Al复合材料进行焊接试验,固定焊接速度为100 mm·min -1,旋转速度分别为900,1100,1300和1500 r·min -1,焊后观察焊缝宏观形貌和各种缺陷,并对接头的微观组织和力学性能进行了分析.焊缝宏观缺陷研究结果表明,随着旋转速度的升高,焊接热输入量增大,金属流动性得到改善,飞边、沟槽等宏观缺陷显著增多,焊缝形貌越来越粗糙；接头微观组织研究表明,由于搅拌头的搅拌作用,相比于母材,在焊核区增强相颗粒分布更加均匀,更多增强相颗粒发生破碎,且随着旋转速度的增加,这种趋势增强.对接头的抗拉强度研究表明,在1300 r·min-1以内时,随着旋转速度增加,接头抗拉强度随之增加,最大值为166 MPa,进一步增加到1500 r·min -1时,强度又有所降低,为154 MPa.
参考文献
| [1] | Lioyd D J .Particle reinforced aluminium and magnesium matrix composites[J].International Materials Reviews,1994,39(01):1. |
| [2] | Geiger A L;Walker J A .The processing and properties of discontinuously reinforced aluminum composites[J].JOM-Journal of the Minerals Metals and Materials Society,1991,8:8. |
| [3] | Harrigan W C .Commercial processing of metal matrix composites[J].JOM-Journal of the Minerals Metals and Materials Society,1991,8:32. |
| [4] | Zedalis M S .Aluminum based metal matrix composites[J].JOM-Journal of the Minerals Metals and Materials Society,1991,8:29. |
| [5] | Klmowicz T F .The large-scale commercialization of aluminum matrix composites[J].JOM-Journal of the Minerals Metals and Materials Society,1994,46:49. |
| [6] | Devletian J H .SiC/Al MMC welding by a capactor discharge process[J].Welding Journal,1987,66(07):34. |
| [7] | 唐逸民;陈茂爱 .金属基复合材料焊接的研究问题及对策[J].焊接研究与生产,1998,1:5. |
| [8] | 张华,林三宝,吴林,冯吉才,栾国红.搅拌摩擦焊研究进展及前景展望[J].焊接学报,2003(03):91-96. |
| [9] | 栾国红,郭德伦,张田仓,孙成彬.铝合金的搅拌摩擦焊[J].焊接技术,2003(01):1-4. |
| [10] | Thomas W M .Friction stir butt welding.International Patent Application[P].United States of America,1995. |
| [11] | C J Dawes .An introduction to friction stir welding and its development[J].Welding & Metal Fabrication: Welding and Joining Practice and Technology,1995(1):13-14,16-0. |
| [12] | Murr L E;Liu G;Mcclure J C .A TEM study of precipitation and related microstructures in friction stir welded 6061 aluminum[J].Journal of Materials Science,1998,33(10):1234. |
| [13] | Valerio Olga Flores;Kennedy Christine;Murr L E;Brown D,Pappu S,Nowak B M,McClure J C .Microetructural issues in a friction stir welded aluminum alloy[J].Scripta Materialia,1998,38(05):703. |
| [14] | Oosterkamp L D;Jemmerhoff O.Friction stir welding of aluminum extrusions[A].Trowbridge,Wiltshire,UK,2000:120. |
| [15] | 王海艳,戚文军,农登,郑飞燕.6061铝合金搅拌摩擦焊接头组织与性能研究[J].稀有金属,2010(05):638-642. |
| [16] | Huseyin Uzun .Friction stir welding of SiC particulate reinforced AA2124 aluminium alloy matrix composite[J].Materials & Design,2007,28(05):1440. |
| [17] | Chen X G;da Silva M;Gongeon P;St-Georges L .Microstructure and mechanical properties of friction stir welded AA6063-B4C metal matrix composites[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2009,518:174. |
| [18] | Nami H;Adgi H;Sharifitabar M .Microstructure and mechanical properties of Al/Mg2Si metal matrix cast composite[J].Materials & Design,2011,32(02):976. |
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