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首页> 外文会议>TMS annual meeting exhibition >Synthesis and Characterization of A1-B4C Powders by Mechanical Alloying
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Synthesis and Characterization of A1-B4C Powders by Mechanical Alloying

机译：机械合金化法合成A1-B4C粉末

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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 Al as the matrix and B_4C as the reinforcement. The effects of powder blending process, solid sintering and thermo-mechanical processes on the microstructure evolution and mechanical properties are studied. The results show that the density of the composites with 30 wt% boron carbide can reach 98.2% after sintering. Thermome-chanical processing can increase the density further to 99.4% and remove the defects, leading to an increase in strength from 362.0 to 388.7 Mpa. The influences of boron carbide and processing routes on the mechanical properties and microstructure evolution, specifically the interface between boron carbide and matrix are discussed.
机译：碳化硼增强铝基复合材料被广泛用作中子吸收材料。在这里，我们报道机械合金化已成功地用于合成金属基复合材料粉末，其中Al为基体，B_4C为增强体。研究了粉末共混，固结烧结和热机械过程对组织演变和力学性能的影响。结果表明，烧结后，碳化硼含量为30 wt％的复合材料的密度可达到98.2％。热机械加工可将密度进一步提高到99.4％，并消除缺陷，从而使强度从362.0 Mpa增加到388.7 Mpa。讨论了碳化硼和加工路线对力学性能和微观组织演变的影响，特别是碳化硼与基体之间的界面。

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