为了研究微米级碳化硅颗粒(SiCp)尺寸对中体积分数SiCp增强铝基复合材料的拉伸性能与强化机制的影响,用粉末冶金工艺制备体积分数为30％的SiCp/2024Al复合材料,利用OM,SEM,万能材料试验机等对材料微观结构和拉伸性能进行了研究.结果表明,复合材料的拉伸强度随着SiCp尺寸的减小而增大.当SiCp尺寸为3μm时,复合材料的断裂主要以界面处的基体合金撕裂为主;当SiCp尺寸为25μm和40 μm时,复合材料的断裂以SiCp解理断裂为主;当SiCp尺寸为8μm和15μm时,复合材料的断裂方式是以界面处的基体合金撕裂和SiCp的断裂共同作用.3μm SiCp增强复合材料相对密度不高、SiCp分布不均匀但其拉伸强度最大,主要原因为受力时小SiCp极少断裂和小颗粒效应导致基体的显微组织强化.
参考文献
| [1] | Geiger A L;Walker J A .The processing and properties of discontinuously reinforced aluminum composites[J].Journal of the Minerals Metals and Materials Society,1991,43(08):8-15. |
| [2] | Evans A;Marchi C S;Martensen A.Metal Matrix Composites in Industry:an Introduction and a Survey[M].Norwell:Kluwer Academic Publishers,2003 |
| [3] | Benji Maruyama;Warren H. Hunt Jr. .Discontinuously reinforced aluminum: current status and future direction[J].JOM,1999(11):59-61. |
| [4] | Mark Hull .Commercial success for MMCs[J].Powder Metallurgy,1998(1):25-26. |
| [5] | Mark Hull .AMC: leading edge MMCs and powder materials[J].Powder Metallurgy,1997(2):102-103. |
| [6] | Cui Yan,Wang Lifeng,Ren Jianyue.Multi-functional SiC/AI Composites for Aerospace Applications[J].中国航空学报（英文版）,2008(06):578-584. |
| [7] | 郦定强,洪淳亨.增强体颗粒尺寸对SiCp/2124Al复合材料变形行为的影响[J].上海交通大学学报,2000(03):342-346. |
| [8] | 金鹏,刘越,李曙,肖伯律.碳化硅增强铝基复合材料的力学性能和断裂机制[J].材料研究学报,2009(02):211-214. |
| [9] | 肖伯律,毕敬,赵明久,马宗义.SiCp尺寸对铝基复合材料拉伸性能和断裂机制的影响[J].金属学报,2002(09):1006-1008. |
| [10] | Doel T J A;Bowen P .Tensile properties of particulate-reinforced metal matrix composites[J].Composites Part A:Applied Science and Manufacturing,1996,27(08):655-665. |
| [11] | Yang J;Cady C;Hu M S et al.Effects of damage on the flow strength and ductility of a ductile Al alloy reinforced with SiC particulates[J].ACTA METALLURGICA ET MATERIALIA,1990,38(12):2613-2619. |
| [12] | V.C. Srivastava;A. Schneider;V. Uhlenwinkel;K. Bauckhage .Spray processing of 2014-Al + SiCp composites and their property evaluation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):19-26. |
| [13] | 刘君武,李青鑫,吴金方,丁锋,郑治祥.粒度组成对高体积分数SiCp/Al复合材料性能的影响[J].材料热处理学报,2011(03):14-18. |
| [14] | Lewandowski J J;Liu D S;Liu C .Observations on the effects of particulate size and superposed pressure on deformation of metal matrix composites[J].Scripta Metallurgica et Materialia,1991,25:21-26. |
| [15] | A. Sipenyuk;V. Kuprin;Yu. Milman .Properties of P/M processed particle reinforced metal matrix composites specified by reinforcement concentration and matrix-to-reinforcement particle size ratio[J].Acta materialia,2006(1):157-166. |
| [16] | Miller W S;Humphreys F J .Strengthening mechanisms in particulate metal-matrix composites:reply to comments by Arsenault[J].Scripta Metallurgica et Materialia,1991,25(11):2623-2626. |
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