Optimum Heat Treatment Processes of SiCp/Al-20Si-4.5Cu Gradient Composites Prepared by Spray Deposition
摘 要
采用喷射沉积技术制备了SiCp/Al-20Si-4.5Cu梯度复合材料, 并对其进行致密化和不同温度、时间的固溶、时效热处理, 通过对比硬度得出优化的热处理工艺参数; 然后对热处理前后的试样进行拉伸试验, 并观察拉伸断口形貌。结果表明: 该复合材料优化的固溶温度为485 ℃, 固溶时间为1.5 h, 时效温度为175 ℃, 时效时间为7 h; SiC颗粒含量的梯度变化导致复合材料时效速度呈梯度变化; 高SiC含量的表层峰值时效后的抗拉强度最高, 为432 MPa, 其伸长率为5.8%, 此时沿SiC颗粒含量梯度降低方向上的复合材料则处于欠时效状态, 塑性较好; 梯度复合材料中高SiC含量表层的脆性断裂特征明显, 沿梯度方向上随SiC含量的降低, 复合材料拉伸断口上的韧窝增多, 韧性断裂趋势增强。
Abstract
A SiCp/Al-20Si-4.5Cu gradient composite was prepared by spray deposition and densification technologies, and different solid solution and aging heat treatments were completed. The optimum heat treatment process was obtained by hardness comparing, and then the samples before and after heat treatment were tested by tensile testing and tensile fracture morphology was observed. The results show that the optimum solution temperature of the composite was 485 ℃, the solution time was 1.5 h, the aging temperature was 175 ℃ and the aging time was 7 h. The gradient change of aging rate for the composite was resulted from that of SiC content. The surface layer with the high SiC content exhibited the highest strength of 432 MPa and the elongation of 5.8% in the peak-aged state, and the composite along SiC content gradient lower direction was in under-aged state and exhibited better plasticity. The surface layer with high SiC content exhibited obvious brittle fracture feature, while the layer with the lower SiC content along the gradient direction demonstrated more dimples, enhanced the trend of ductile fracture characteristic.
中图分类号 TG142.73
所属栏目 新材料 新工艺
基金项目 国家高技术研究发展计划项目(2009AA03Z111)
收稿日期 2013/1/22
修改稿日期 2013/11/15
网络出版日期
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备注申继忍(1987-), 男, 河南周口人, 硕士研究生。
引用该论文: SHEN Ji-ren,YAN Hong-ge,SU Bin,CHEN Ji-hua. Optimum Heat Treatment Processes of SiCp/Al-20Si-4.5Cu Gradient Composites Prepared by Spray Deposition[J]. Materials for mechancial engineering, 2014, 38(3): 39~43
申继忍,严红革,苏斌,陈吉华. 喷射沉积SiCp/Al-20Si-4.5Cu梯度复合材料的优化热处理工艺[J]. 机械工程材料, 2014, 38(3): 39~43
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参考文献
【1】李耀天.梯度功能材料的研究与应用[J].金属功能材料,2000,7(4):15-23.
【2】袁秦鲁,胡锐,李金山.梯度复合材料制备技术研究进展[J].兵器材料科学与工程,2003,26(6):68-71.
【3】许富民,齐民,李守新.SiC颗粒增强铝基梯度复合材料的制备与性能[J].金属学报,2002,38(9):998-1001.
【4】VELHINHO A, SEQUEIRA P D, MARTINS R, et al. X-ray tomographic imaging of Al/SiCp functionally graded composites fabricated by centrifugal casting [J]. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003, 200:295-302.
【5】KYUNG M C, IK M P. Thermal properties and fracture behavior of compositionally graded Al-SiCp composites [J].Materials Science Forum,2004,52:621-624.
【6】SRIVATSAN T S, SUDARSHAN T S, LAVERNIA E J.Processing of discontinuously-reinforced metal matrix composites by rapid solidification[J].Prog Mater Sci,1995,39(5):317-409.
【7】严红革,陈刚,陈吉华,等.陶瓷颗粒增强铝基梯度复合材料及其制备方法和用于制备该材料的喷射沉积装置:中国,201010122076.3[P].2010-10-12.
【8】SU B, YAN H G, CHEN G, et al. Study on the preparation of the SiCp/Al-20Si-3Cu functionally graded material using spray depositions [J].Mater Sci Eng: A,2010,527:6660-6665.
【9】ZHOU J, DUSZCZYK J. Structural characteristics of a nickel-modified Al-20Si-3Cu-1Mg alloy powder[J] .Jouranl of Materials Science,1992,27:3341-3352.
【10】SHARMILEE P, MITRA R, BHANUPRASAD V. Aging behaviour of Al-Cu-Mg alloy-SiC composites[J].Mater Sci Eng:A,2008,480(1/2):496-505.
【11】DIKICI B,GAVGALI M, TEKMEN C. Corrosion behavior of an artificially aged Al-Si-Mg-based metal matrix composite[J].Journal of Composite Materials,2006,40(14):1259-1269.
【12】AIGBODION V S, HASSAN S B. Effect of thermal ageing characteristics of Al-Si-Fe/SiC particulate composite synthesized by double stir casting[J].Journal of Engineering Research,2010,7(1):53-61.
【13】陈振华,滕杰,严红革,等.T6热处理对A359/SiC复合材料摩擦磨损性能的影响[J].材料导报,2004,18(12):88-90.
【14】柏振海.6066Al/SiCP复合材料弹性模量内耗及加工制备的研究[D].长沙:中南大学,2006:1-131.
【15】龚浩然,黎文献.喷射沉积SiC/6066铝基复合材料的固溶温度[J].金属热处理,2000(6):15-16.
【2】袁秦鲁,胡锐,李金山.梯度复合材料制备技术研究进展[J].兵器材料科学与工程,2003,26(6):68-71.
【3】许富民,齐民,李守新.SiC颗粒增强铝基梯度复合材料的制备与性能[J].金属学报,2002,38(9):998-1001.
【4】VELHINHO A, SEQUEIRA P D, MARTINS R, et al. X-ray tomographic imaging of Al/SiCp functionally graded composites fabricated by centrifugal casting [J]. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003, 200:295-302.
【5】KYUNG M C, IK M P. Thermal properties and fracture behavior of compositionally graded Al-SiCp composites [J].Materials Science Forum,2004,52:621-624.
【6】SRIVATSAN T S, SUDARSHAN T S, LAVERNIA E J.Processing of discontinuously-reinforced metal matrix composites by rapid solidification[J].Prog Mater Sci,1995,39(5):317-409.
【7】严红革,陈刚,陈吉华,等.陶瓷颗粒增强铝基梯度复合材料及其制备方法和用于制备该材料的喷射沉积装置:中国,201010122076.3[P].2010-10-12.
【8】SU B, YAN H G, CHEN G, et al. Study on the preparation of the SiCp/Al-20Si-3Cu functionally graded material using spray depositions [J].Mater Sci Eng: A,2010,527:6660-6665.
【9】ZHOU J, DUSZCZYK J. Structural characteristics of a nickel-modified Al-20Si-3Cu-1Mg alloy powder[J] .Jouranl of Materials Science,1992,27:3341-3352.
【10】SHARMILEE P, MITRA R, BHANUPRASAD V. Aging behaviour of Al-Cu-Mg alloy-SiC composites[J].Mater Sci Eng:A,2008,480(1/2):496-505.
【11】DIKICI B,GAVGALI M, TEKMEN C. Corrosion behavior of an artificially aged Al-Si-Mg-based metal matrix composite[J].Journal of Composite Materials,2006,40(14):1259-1269.
【12】AIGBODION V S, HASSAN S B. Effect of thermal ageing characteristics of Al-Si-Fe/SiC particulate composite synthesized by double stir casting[J].Journal of Engineering Research,2010,7(1):53-61.
【13】陈振华,滕杰,严红革,等.T6热处理对A359/SiC复合材料摩擦磨损性能的影响[J].材料导报,2004,18(12):88-90.
【14】柏振海.6066Al/SiCP复合材料弹性模量内耗及加工制备的研究[D].长沙:中南大学,2006:1-131.
【15】龚浩然,黎文献.喷射沉积SiC/6066铝基复合材料的固溶温度[J].金属热处理,2000(6):15-16.
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