|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||I-6: Influence of Reinforcement Particle Size and Spatial Distribution on Microstructure and Mechanical Behavior of Precipitation Strengthened Al Matrix Composites
||Chuandong Wu, Kaka Ma, Enrique Lavernia, Guoqiang Luo, Fei Chen, Qiang Shen, lianmeng Zhang
|On-Site Speaker (Planned)
We report on an investigation of the influence of reinforcement particle size on microstructure and mechanical behavior of precipitation strengthened Al alloy matrix composites. Al 7075 alloy composites reinforced with B4C particles were selected as a model system in the present study. The bulk composites containing three types of B4C with different particle sizes were synthesized via plasma activated sintering and followed heat treatment. For a constant value of weight fraction of B4C, the composite with coarse reinforcement particles exhibited a relatively homogeneous and discrete distribution of the B4C particles while the composites with fine reinforcement exhibited agglomeration of the B4C particles. The composite with the smallest B4C particles possessed the highest yield strength and fracture strength. Moreover, quantitative analysis of the strengthening mechanisms and the fracture mechanism in the composites are discussed in details.
||Planned: Light Metals