采用激光-TIG复合熔注工艺,在铝合金表面制备WCp/Al表而复合材料层.通过优化激光功率、TIG电流、扣描速度和送粉率等工艺参数,可以捩得0.5～4.3 mm厚的表面复合材料层.采用XRD、SEM、EDS等手段对表面颗粒强化层的微观组织和成分进行研究.结果表明:熔注层基体的微观组织为过共晶组织;熔注层不同位置的过共晶相具有不同的形貌,熔池上部主要为含有十字花状、鱼骨状、蝶状先共晶相(W1-xAlx)Cy的过共晶组织,而底部的先共晶相呈现块状形态.
参考文献
| [1] | 赵敏海,刘爱国,郭面焕.WC颗粒增强耐磨材料的研究现状[J].焊接,2006(11):26-29,47. |
| [2] | 许斌,项东.碳化钨颗粒增强表面复合材料的研究进展[J].铸造技术,2002(06):362-364. |
| [3] | 湛永钟,张国定,蔡宏伟.颗粒增强金属基复合材料的干摩擦性能与磨损机理[J].材料科学与工程学报,2003(05):748-752. |
| [4] | A. Yakovlev;Ph. Bertrand;I. Smurov .Laser cladding of wear resistant metal matrix composite coatings[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2004(4):133-138. |
| [5] | MCDANELS D L .Analysis of stress-strain,fracture,and ductility behavior of aluminum matrix composites containing discontinuous silicon carbide reinforcement[J].Metallurgical and Materials Transactions,1985,16(06):1105-1115. |
| [6] | IBRAHIM A;MOHAMED F A;LAVERNIA E J .Particulate reinforced metal matrix composites-A review[J].Journal of Materials Science,1991,26(05):1137-1156. |
| [7] | LLOYD D J .Particle reinforced aluminum and magnesium matrix composites[J].International Materials Reviews,1994,39(01):1-23. |
| [8] | D.B. Miracle .Metal matrix composites - From science to technological significance[J].Composites science and technology,2005(15/16):2526-2540. |
| [9] | Y.T. Pei;V. Ocelik;J.Th.M. De Hosson .SiC_P/Ti6Al4V functionally graded materials produced by laser melt injection[J].Acta materialia,2002(8):2035-2051. |
| [10] | J. A. Vreeling;V. Ocelik .Ti-6Al-4V strengthened by laser melt injection of WC_p particles[J].Acta materialia,2002(19):4913-4924. |
| [11] | Pei YT.;Ocelik V.;De Hosson JTM. .Interfacial adhesion of laser clad functionally graded materials[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):192-200. |
| [12] | Liu DJ;Li LQ;Li FQ;Chen YB .WCp/Fe metal matrix composites produced by laser melt injection[J].Surface & Coatings Technology,2008(9):1771-1777. |
| [13] | J.A.Vreeling;V.Ocelik;Y.T.Pei .LASER MELT INJECTION IN ALUMINUM ALLOYS: ON THE ROLE OF THE OXIDE SKIN[J].Acta materialia,2000(17):4225-4233. |
| [14] | STEEN W M .Arc augmented laser processing of materials[J].Journal of Applied Physics,1980,51(11):5636-5641. |
| [15] | U. Dilthey;F. Lueder;A. Wieschemann .Technical and economical advantages by synergies in laser arc hybrid welding[J].Welding in the World: Journal of the International Institute of Welding: Journal of the International Institute of Welding,1999(4 Suppl.):141-152. |
| [16] | DIEBOLD P;ALBRIGHT C E .Laser-GTA welding of aluminum alloy 5052[J].Welding Journal,1984,63(06):18-24. |
| [17] | 孟庆国,方洪渊,徐文立,姬书得.2219铝合金双丝焊热影响区组织及力学性能[J].焊接学报,2006(03):9-12. |
| [18] | Yan JM;Ma XF;Zhao W;Tang HG;Zhu CJ .Synthesis, crystal structure, and density of (W1-xAlx)C[J].International Journal of Quantum Chemistry,2004(7):2265-2270. |
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