真空熔炼多组元CuxAlFeNiCrTi高熵合金的显微组织和性能
Microstructure and Properties of Multi-component CuxAlFeNiCrTi High-entropy Alloy Prepared by Vacuum Arc-melting Furnace
摘 要
多组元高熵合金是一种具有五种以上组元的新型合金。通过真空电弧熔炼炉熔铸得到了不同铜含量的高熵合金CuxAlFeNiCrTi（x=1和0.5）,再通过光学显微镜、X射线衍射仪、扫描电镜、透射电镜以及显微硬度计分析了高熵合金的显微组织、结构、硬度和耐腐蚀性能等。结果表明: 高熵合金具有简单的相结构, 合金硬度在800 HV以上,耐碱腐蚀性能优于耐酸腐蚀性能;随着铜元素含量的减少, 合金结构由体心立方+面心立方结构变为体心立方结构, 合金硬度增加, 耐腐蚀性能提高。
高熵合金
显微组织
性能
multi-element
high-entropy alloy
microstructure
property
Abstract
High-entropy alloys (HE alloys) with multi-principal elements are a kind of new alloys with over five principal elements. The CuxAlFeNiCrTi（x=1 and 0.5） high-entropy alloys were prepared by vacuum arc-melting furnace. The characteristics including microstructure, hardness, corrosion resistance and so on were examined by metalloscope, XRD, SEM, TEM and Vickers hardness tester. The results showed that, HE alloys exhibited simple microstructure and their hardness were higher than 800 HV. Corrosion experiment showed that HE alloys behave better in alkaline solution than acid solution. With the decreasing Cu content, the composition of the alloy system changed from FCC phase and BCC phase to a single BCC phase, the hardness and corrosion resistance of the alloys increased also.
中图分类号 TG146.2
所属栏目 试验与研究
基金项目
收稿日期 2010/3/18
修改稿日期
网络出版日期
作者单位点击查看
备注高 鹏(1985-),男,硕士研究生。
引用该论文: GAO Peng,SUN Hong-fei,LI Zhong-li,YAN You-zeng,LI Fu-cun,ZHU Hai-yun. Microstructure and Properties of Multi-component CuxAlFeNiCrTi High-entropy Alloy Prepared by Vacuum Arc-melting Furnace[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2010, 46(11): 677～681
高鹏,孙宏飞,李忠丽,燕友增,李福村,朱海云. 真空熔炼多组元CuxAlFeNiCrTi高熵合金的显微组织和性能[J]. 理化检验－物理分册, 2010, 46(11): 677～681
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【7】HUANG P K, YEH J W, SHUR T T. Multi-principal-element alloys with improved oxidation and wear resistance for thermal spray coating[J]. Adv Eng Mater,2004(6):74.
【8】刘源,李言祥,陈祥,等. 多主元高熵合金研究进展[J]. 材料导报,2006,2(4):1-6.
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【11】HSU C Y, YEH J W, CHEN S K, et al. Wear resistance and high-temperature compression strength of FCC CuCoNiCrAl0.5Fe alloy with boron addition[J]. Metall Mater Trans,2004,35A:1465-1469.
【12】KIM K B, WARREN P J, CANTOR B. Metallic glass formation in multi-component (Ti,Zr,Hf,Nb)-(Ni,Cu,Ag)-Al alloys[J]. J Non-crystalline Solids,2003,317:17.
【13】CHEN T K, YEH T T, YEH J W, et al. Nanostructured nitride films of multi-element high-entropy alloys by reactive DC sputtering[J]. Surface and Coatings Technology,2004,188/189:193-200.
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【15】WU Jien-min, LIN Su-jien, YEH Jien-wei, et al. Adhesive wear behavior of AlxCoCrCuFeNi high-entropy alloys as a function of aluminum content[J]. Wear,2006,261(5/6):513.
【16】高家诚,李锐. 高熵合金研究的新进展[J]. 功能材料, 2008, 18(7): 1059-1061.
【17】陈敏,刘源,李言祥,等. 多主元高熵合金AlTiFeNiCuCrx微观结构和力学性能[J]. 金属学报,2007,43(10):1020-1024.
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【21】刘源,陈敏,李言祥,等. Cr含量对AlTiFeNiCuCrx多主元高熵合金凝固模式和微观结构的影响[C]//凝固技术2008年会会刊. [s.l.]:[s.n.],2008:87-89.
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