材料工程2018，Vol.46Issue(3)：22-27,6.DOI:10.11868/j.issn.1001-4381.2016.000769
放电等离子烧结对TiB2/AlCoCrFeNi复合材料组织与性能的影响
Effect of Spark Plasma Sintering on Microstructure and Properties of TiB2/AlCoCrFeNi Composites
摘要
Abstract
The equal molar AlCoCrFeNi high entropy alloys with 5％ (volume fraction) TiB2 particles reinforcement were fabricated by spark plasma sintering (SPS).Effect of SPS temperature and pressure on microstructure evolution and mechanical properties of TiB2/AlCoCrFeNi composites was studied using X-raydiffraction (XRD),density testing,scanning electron microscopy (SEM) and mechanical properites testing.The results show that increasing SPS temperature and pressure can improve hardness and compressive strength of TiB2/AlCoCrFeNi composites.The relative density,compressive strength,yield strength and hardness of the TiB2/AlCoCrFeNi composite after sintering at 1200°C and 30MPa are 99.6％,2416MPa,1474MPa and 470HB,respectively.During spark plasma sintering,phase transformation occurs in the high entropy alloy matrix of the composite.The composite after sintering at 1200℃ and 30-45MPa is composed of phases BCC,B2,FCC,TiB2 and σ.关键词
高熵合金基复合材料/放电等离子烧结/致密化/显微组织/力学性能Key words
high entropy alloy matrix composite/spark plasma sintering/density behavior/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
肖代红,刘彧,余永新,周鹏飞,刘文胜,马运柱..放电等离子烧结对TiB2/AlCoCrFeNi复合材料组织与性能的影响[J].材料工程,2018,46(3):22-27,6.基金项目
湖南省自然科学基金(2016JJ2146) （2016JJ2146）
国家自然科学基金(51271152,51474245) （51271152,51474245）
