对铸态AlFeCrCoCuZrx (x=0, 0.5, 1)多组元高熵合金的微观组织、硬度及其在3.5%NaCl溶液中的耐腐蚀性能进行了研究。研究表明:合金微观组织为典型的树枝晶结构,随着Zr元素的加入,枝晶由单一的BCC相转变为由两相组成,而枝晶间由富Cu的FCC相组成并保持不变。合金硬度随Zr元素的增加而提高,AlFeCrCoCuZr合金的硬度达到698HV。合金在3.5%NaCl溶液中的耐蚀性能均优于304L不锈钢,但随着Zr含量的增加,合金的耐蚀性降低。
The microstructure, hardness and the corrosion resistance in 3.5% NaCl solution of the as-cast AlFeCrCoCuZrx(x=0, 0.5, 1) high-entropy alloys were investigated. The results show that typically cast dendrite structure is formed in the alloys. With the increase of Zr addition, phases in the dendrite region change from single BCC structure to two phases, while phase in the interdendrite region is Cu-rich FCC structure and kept unchanged. The hardness of the alloys increases with the increase of Zr addition and hardness AlFeCrCoCuZr alloy reaches the maximum of HV 698. The corrosion resistance of these alloys in 3.5% NaCl solution is better than that of 304L stainless steel, however as the Zr content increases, the corrosion resistance of alloys is degenerated.
参考文献
| [1] | YEH J W. Alloy design strategies and future trends in high-entropy alloys[J]. Metals & Materials Society, 2013, 65:1759-1771. |
| [2] | ZHANG Y, YANG X, LIAW P K. Alloy design and properties optimization of high-entropy alloys[J]. Metals & Materials Society, 2013, 64:831-838. |
| [3] | REN M X, LI B S, FU H Z. Formation condition of solid solution type high-entropy alloy[J]. Transactions of Nonferrous Metals Society of China, 2013, 23:991-995. |
| [4] | LIANG X B, WEI M, CHENG J B, et al. Reaserch progress in advanced materials of high-entropy alloys[J]. Journal of Materials Engineering, 2009, (12):75-79. 梁秀兵, 魏敏, 程江波, 等. 高熵合金新材料的研究进展[J]. 材料工程, 2009, (12):75-79. |
| [5] | ZHOU Y J, ZHANG Y, WANG Y L, et al. Room temperature mechanical properties of the AlTiVCrMnFeCoNiCu high-entropy alloy system with multi-principal elements[J]. Journal of University of Science and Technology Beijing, 2008, 30(7):765-769. 周云军, 张勇, 王艳丽, 等. 多组元AlTiVCrMnFeCoNiCu高熵合金的室温力学性能[J]. 北京科技大学学报, 2008, 30(7):765-769. |
| [6] | LIU S Q, HUANG W G. Microstructure and mechanical performance of AlCoCrNiSix high-entropy alloys[J]. Journal of Materials Engineering, 2012, (1):5-8. 刘恕骞, 黄维刚. AlCoCrNiSix高熵合金微观组织结构与力学性能[J]. 材料工程, 2012, (1):5-8. |
| [7] | ZUO T T, REN S B, LIAW P K. et al. Processing effects on the magnetic and mechanical properties of FeCoNiAl0.2Si0.2 high entropy alloy[J]. International Journal of Minerals, Metallurgy and Materials, 2013, 20(6):549-555. |
| [8] | WU J M, LIN S J, YEH J W. Adhesive wear behavior of AlCoCrCuFeNi high-entropy alloys as a function of aluminum content[J]. Wear, 2006, 261:513-519. |
| [9] | LI B Y, PENG K, HU A P, et al. Structure and properties of FeCoNiCrCu0.5Alx high-entropy alloy[J]. Transactions of Nonferrous Metals Society of China, 2013, 22:735-741. |
| [10] | HUANG Y S, CHEN L, LIU H W. Microstructure, hardness, resistivity and thermal stability of sputtered oxide films of AlCoCrCu0.5NiFe high-entropy alloy[J]. Materials Science and Engineering:A, 2007, 457(1-2):77-81. |
| [11] | YEH J W, CHEN S K. Development of high entropy alloys[J]. Journal of Industrial Materials, 2005, 224:71-75. 叶均蔚, 陈瑞凯. 高熵合金的发展概况[J]. 工业材料杂志, 2005, 224:71-75. |
| [12] | ZHANG Y, ZHOU Y J, CHEN G L. Rapid development of high entropy solution alloys[J]. Physical, 2008, 37(8):601-605. 张勇, 周云军, 陈国良. 快速发展中的高熵溶体合金[J]. 物理, 2008, 37(8):601-605. |
| [13] | QIU X W, ZHANG Y P, HE L, et al. Microstructure and corrosion resistance of AlCrFeCuCo high entropy alloy[J]. Journal of Alloys and Compounds, 2013, 549:195-199. |
| [14] | 王艳苹, 李邦盛. AlCrFeCoNiCu多组元合金及其复合材料的组织与性能[D]. 哈尔滨:哈尔滨工业大学, 2009. |
| [15] | INOUE A. Stabilization of metallic supercooled liquid and bulk amorphous alloys[J]. Acta Materialia, 2000, 48:279-306. |
| [16] | REN M X, LI B S. Phase analysis of CrFeCoNiCu high-entropy alloy[J]. Journal of Materials Engineering, 2012, (1):9-12. 任明星, 李邦盛. CrFeCoNiCu多主元高熵合金的相分析[J]. 材料工程, 2012, (1):9-12. |
| [17] | REVIE R, WINSTON U. Corrosion Handbook[M]. New York:J Wiely & Sons, 2005. |
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