|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
||Influence of hot rolling on mechanical behavior and strengthening mechanism in boron carbide reinforced aluminum matrix composites
||Hao Guo, JianNeng Zhang, Yang Zhang, Ye Cui, Dan Chen, Yu Zhao, SongSong Xu, NaiMeng Liu, ZhongWu Zhang
|On-Site Speaker (Planned)
Boron carbide reinforced aluminum matrix composites are widely used as neutron absorption materials. Here we report that mechanical alloying has been successfully employed to synthesize metal matrix composite powders with a nanograin Al as the matrix and B4C as the reinforcement. The effects of B4C content on the size distribution, morphology of the milled powders as well as the grain size of the matrix alloy are investigated. The XRD results confirmed that the grain size of aluminum reached to 36nm and lattice distortion increased much after 60h milling of powder mixture. The content of boron carbide affects the mechanical properties significantly. The strength can be increased from 263MPa to 378MPa with the increase in boron carbide from 15wt% to 30wt%. Meanwhile the elongation decreased slightly. Some physical phenomena, such as phase transformation during mechanical alloying and their effects on the mechanical properties of hot pressured specimens are also discussed.
||Planned: Supplemental Proceedings volume