喷射沉积6061Al/SiC_p复合材料的组织与性能

来源期刊：中国有色金属学报1998年第3期

论文作者：张豪 陈振华 孙亦 陈刚 黄培云

文章页码：369 - 374

关键词：喷射沉积； 复合材料 ； 铝合金 ； 碳化硅

Key words：spray deposition ； composites； mechanical properties ； silicon carbide

摘    要：研究了6061Al/SiC_p颗粒增强复合材料的喷射沉积+热挤压工艺及材料的组织特征与力学性能。喷射沉积工艺可以获得增强颗粒均匀分布，无界面反应的大尺寸复合材料锭坯，实验锭坯尺寸达d200 mm×250 mm，热挤压工艺进一步使锭坯致密，增强颗粒分布改善。挤压材料组织细小，过饱和度大，析出相细小、分布弥散，峰时效时间 约为传统制度的一半, 且力学性能极大地改善，可达σ_b=439 MPa,σ_0.2=409 MPa，δ=10.4%。

Abstract: Spray deposition and hot extrusion process for producing 6061Al/SiC_p composites and the material's microstructure feature and mechanical properties were studied. As-sprayed large scale composites have uniformly distributed reinforcing particles, and there is no apparent interface reaction. Hot extrusion can densify billets and improve the distribution of particles. As-extruded microstructure is fine and of excess solution, with fine and discattered precipitates. The peak aging time is half that of traditional ones. The mechanical properties improve greatly, and are up to σ_b=439 MPa, σ_0.2=409 MPa, δ=10.4%.