xTiCrMnCu (x=0, 0.25, 0.5, 0.75, 1.0)高熵合金。通過XRD、SEM及腐蝕電化學測試技術(shù)等研究了AlxTiCrMnCu高熵合金的微觀結(jié)構(gòu)及性能。研究發(fā)現(xiàn),隨Al含量的增加,AlxTiCrMnCu高熵合金由簡單的FCC和HCP1混合固溶體結(jié)構(gòu)逐漸轉(zhuǎn)變?yōu)槿縃CP2固溶體結(jié)構(gòu)；合金的顯微硬度隨Al含量的增加而增大；AlxTiCrMnCu高熵合金在3.5% NaCl水溶液中的耐蝕性先提高后降低,當x=0.25時,其耐蝕性最佳。"/>

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激光沉積AlxTiCrMnCu高熵合金組織性能的研究
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1華東交通大學 材料科學與工程學院

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國家自然科學基金資助(項目號51865011)


Study on the Microstructures and Properties of AlxTiCrMnCu High Entropy Alloys Fabricated by Laser Deposition
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1.School of Materials Science and Engineering,East China Jiaotong University

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    摘要:

    采用激光沉積方法制備了AlxTiCrMnCu (x=0, 0.25, 0.5, 0.75, 1.0)高熵合金。通過XRD、SEM及腐蝕電化學測試技術(shù)等研究了AlxTiCrMnCu高熵合金的微觀結(jié)構(gòu)及性能。研究發(fā)現(xiàn),隨Al含量的增加,AlxTiCrMnCu高熵合金由簡單的FCC和HCP1混合固溶體結(jié)構(gòu)逐漸轉(zhuǎn)變?yōu)槿縃CP2固溶體結(jié)構(gòu)；合金的顯微硬度隨Al含量的增加而增大；AlxTiCrMnCu高熵合金在3.5% NaCl水溶液中的耐蝕性先提高后降低,當x=0.25時,其耐蝕性最佳。

    Abstract:

    AlxTiCrMnCu (x=0, 0.25, 0.5, 0.75, 1.0) high entropy alloys were prepared by laser deposition. The XRD、SEM and corrosion electrochemical testing methods were used to investigate the effect of Al on the microstructure and properties of AlxTiCrMnCu alloys. The results show that, with the increase of Al addition, phases of AlxTiCrMnCu alloys change from simple FCC and HCP1 solid-solutions to single HCP2 solid-solution. The microhardness of AlxTiCrMnCu alloys increases gradually with the increase of Al addition. The corrosion resistance of AlxTiCrMnCu alloys in 3.5% NaCl solution increases firstly and then decreases with the increase of Al addition. The optimum corrosion resistance can be obtained when x=0.25.

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胡勇,劉飛,王達豪,趙龍志,唐延川,劉德佳,沈明學,趙火平,焦海濤.激光沉積AlxTiCrMnCu高熵合金組織性能的研究[J].稀有金屬材料與工程,2021,50(8):2967~2972.[Hu Yong, Liu Fei, Wang Dahao, Zhao Longzhi, Tang Yanchuan, Liu Dejia, Shen Mingxue, Zhao Huoping, Jiao Haitao. Study on the Microstructures and Properties of AlxTiCrMnCu High Entropy Alloys Fabricated by Laser Deposition[J]. Rare Metal Materials and Engineering,2021,50(8):2967~2972.]
DOI：10.12442/j. issn.1002-185X.20200693

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  • 收稿日期:2020-09-11
  • 最后修改日期:2020-10-10
  • 錄用日期:2020-10-23
  • 在線發(fā)布日期: 2021-09-07
  • 出版日期: 2021-08-31