SiC-Al_3Ti协同增强7075铝基复合材料搅拌工艺优化研究
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摘要
采用液态搅拌铸造法制备Si C-Al_3Ti协同增强7075铝基复合材料。利用OM、XRD、SEM、直读光谱仪和布氏硬度计,通过正交试验分析了搅拌温度、搅拌速度和搅拌时间等对复合材料中Si C和Al_3Ti分布、收得率及复合材料硬度的影响。结果表明,Si C-Al_3Ti协同增强7075铝基复合材料的最佳搅拌温度为800℃,搅拌速度为450 r/min,搅拌时间为20 min。
The Si C-Al_3Ti co-enhanced 7075 aluminum matrix composites were prepared by liquid stirring casting method.The effect of stirring temperature, stirring speed and stirring time on distribution and yielding rate of Si C and Al_3Ti and the hardness of composites were analyzed by using OM, XRD, SEM, direct reading spectrometer and bush hardness tester. The results show that the optimum stirring temperature, stirring speed, and stirring time are 800 ℃, 450 r/min, and 20 min,respectively.
The Si C-Al_3Ti co-enhanced 7075 aluminum matrix composites were prepared by liquid stirring casting method.The effect of stirring temperature, stirring speed and stirring time on distribution and yielding rate of Si C and Al_3Ti and the hardness of composites were analyzed by using OM, XRD, SEM, direct reading spectrometer and bush hardness tester. The results show that the optimum stirring temperature, stirring speed, and stirring time are 800 ℃, 450 r/min, and 20 min,respectively.
引文
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[2]Jiang J F,Gang E.Compression Mechanical Behaviour of 7075 A-luminium Matrix Composite Reinforced with Nano-sized SiC Particles in Semisolid State[J].Journal of Materials Science&Technology,2016,32(11):1197-1203.
[3]Pugalethi P,Jayaraman M,Natarajan A.Evaluation of Mechanical Properties of Aluminium Alloy 7075 Reinforced with SiC and Al2O3Hybrid Metal Matrix Composites[J].Applied Mechanics&Materials,2015,766-767:246-251.
[4]Ashwath P,Xavior M A.Processing methods and property evaluation of Al2O3and SiC reinforced metal matrix composites based on aluminium 2xxx alloys[J].Journal of Materials Research,2016,31(9):1201-1219.
[5]杨森,张瑞英,刘欢,等.铸造工艺对ZL102-20%SiCp复合材料耐蚀性能的影响[J].铸造技术,2018,39(10):2167-2172,2175.
[6]Moses J J,Dinaharan I,Sekhar S J.Characterization of Silicon Carbide Particulate Reinforced AA6061 Aluminum Alloy Composites Produced via Stir Casting[J].Procedia Materials Science,2014,5:106-112.
[7]岑晓倩.热处理对SiC颗粒增强铝基复合材料组织及力学性能的影响[J].铸造技术,2017,38(5):1051-1053.
[8]Shen R,Wang H U,Guo B,et al.Microstructures and mechanical properties of nano-sized SiC particle reinforced pure Al based composites[J].Materials Science&Engineering of Powder Metallurgy,2016,667:332-339.
[9]Sudarshan,Surappa M K.Synthesis of fly ash particle reinforced A356 Al composites and their characterization[J].Materials Science&Engineering A,2008,480(1-2):117-124.
[10]苏海,高文理,毛成,等.搅拌铸造SiCp/2024铝基复合材料的显微组织与力学性能[J].中国有色金属学报,2010,20(2):217-225.
[11]刘玫潭,蔡旭升,李国强.高性能SiC增强Al基复合材料的显微组织和热性能[J].中国有色金属学报,2013(4):1040-1046.
[12]Gui M C,Wang D B,Wu J J,et al.Microstructure and mechanical properties of cast(Al-Si)/SiCpcomposites produced by liquid and semisolid double stirring process[J].Metal Science Journal,2013,16(5):556-563.
[13]吴星平,石锦罡,吴昊,等.真空搅拌铸造制备SiC颗粒增强ADC12铝基复合材料及其力学性能表征[J].材料工程,2014(1):6-11.
[14]Wang X J,Wang N Z,Wang L Y,et al.Processing,microstructure and mechanical properties of micro-SiC particles reinforced magnesium matrix composites fabricated by stir casting assisted by ultrasonic treatment processing[J].Materials&Design,2014,57(5):638-645.
[15]Qu S G,Lou H S,Li X Q.Influence of particle size distribution on properties of SiC particles reinforced aluminum matrix composites with high SiC particle content[J].Journal of Composite Materials,2016,50(8):1049-1058.