朱德智,戚龙飞,丁霞.体积分数和烧结温度对(AlSiTiCrNiCu)p/6061Al复合材料的热导率的影响[J].稀有金属材料与工程,2019,48(2):614~619.[Zhu Dezhi,Qi Longfei,Ding Xia.Effect of volume fraction and sintering temperature on thermal conductivity of (AlSiTiCrNiCu) p / 6061Al composites[J].Rare Metal Materials and Engineering,2019,48(2):614~619.]
体积分数和烧结温度对(AlSiTiCrNiCu)p/6061Al复合材料的热导率的影响
投稿时间:2017-06-07  修订日期:2017-07-18
中文关键词:  高熵合金  铝基复合材料  导热率  体积分数  烧结温度
基金项目:国家自然科学基金资助项目(59493300);教育部博士点基金资助项目(9800462)
中文摘要:
      高熵合金具有高硬度、高强度、耐磨、耐腐蚀、高温热稳定等优异性能,源于金属-金属间天然的界面结合特性,高熵合金与铝合金有良好的界面润湿性。本文采用AlSiTiCrNiCu高熵合金颗粒作为增强相增强铝合金,研究高熵合金体积分数与烧结温度对复合材料导热性能的影响。结果表明,(AlSiTiCrNiCu)p/6061Al复合材料的导热率随着AlSiTiCrNiCu颗粒体积分数的增大而降低,20 vol.% (AlSiTiCrNiCu)p/6061Al复合材料的导热率为61.59 W/(m?K),相比于基体6061Al合金降低了52 %。当体积分数为10%时,随着烧结温度的升高,复合材料的导热率降低,烧结温度为540℃时,复合材料的导热率为65.80 W/(m?K)。TEM分析,高熵合金与铝合金的界面为扩散性界面,没有发生界面发应,有助于导热率的降低。
Effect of volume fraction and sintering temperature on thermal conductivity of (AlSiTiCrNiCu) p / 6061Al composites
英文关键词:high entropy alloy  aluminum matrix composites  thermal conductivity  volume fraction  sintering temperature
英文摘要:
      High-entropy alloy with high hardness, high strength, wear resistance, corrosion resistance, high temperature heat stability and other excellent performance owing to the metal - metal interface between the natural characteristics of high entropy alloy and aluminum alloy ,has a good wetting interface. In this paper, AlSiTiCrNiCu high-entropy alloy particles were used as the reinforced phase to reinforce aluminum alloy in order to study the effect of high-entropy alloy volume fraction and sintering temperature on the thermal conductivity of the composites. The result shows that the thermal conductivity of (AlSiTiCrNiCu) p / 6061Al composites decreases with the increase of the volume fraction of AlSiTiCrNiCu particles, and the thermal conductivity of (AlSiTiCrNiCu) p / 6061Al composites is 61.59 W / (m ? K) , Compared to the matrix 6061Al alloy decreased by 52%. When the volume fraction is 10%, the thermal conductivity of the composites decreases with the sintering temperature, and the thermal conductivity of the composites is 65.80 W / (m ? K) when the sintering temperature is 540 ℃. By TEM analysis, the type of the interface between high-entropy alloy and aluminum alloy is the diffusion interface and it doesn’t occur any interface product , which contributes to the reduction of thermal conductivity.
作者单位E-mail
朱德智 华南理工大学广东省金属新材料制备与成形重点实验室 zdzandy@126.com 
戚龙飞 华南理工大学广东省金属新材料制备与成形重点实验室  
丁霞 华南理工大学广东省金属新材料制备与成形重点实验室  
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