0.6336Cu0.1452Ni0.1012Al0.12)100-xTmx（x=0~5，原子分?jǐn)?shù)）塊體金屬玻璃（BMG）合金，研究了Tm對合金力學(xué)性能和抗腐蝕性能的影響。結(jié)果表明，當(dāng)Tm含量增加到3%時，其玻璃形成能力（GFA）和壓縮塑性顯著提高，但過量Tm會降低GFA。x=3時合金的最大過冷液相區(qū)寬度為100 K，抗壓強度為1669 MPa，塑性應(yīng)變?yōu)?1.01%，遠(yuǎn)高于Zr0.6336Cu0.1452Ni0.1012Al0.12 BMG的各項性能（67 K、1439 MPa和5.90%）。然而，電化學(xué)測試結(jié)果表明，x=3時的合金在3.5%（質(zhì)量分?jǐn)?shù)）NaCl溶液中的耐腐蝕性不佳，且其耐腐蝕性和力學(xué)性能隨Tm含量的變化趨勢與預(yù)期不同?？赡苁怯捎谶^量添加稀土元素Tm，容易形成更多的氧化物，導(dǎo)致點蝕加劇。進一步添加Tm可以提高Zr基BMG鈍化膜的完整性和耐點蝕性能，但力學(xué)性能不理想。"/>

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Tm對鋯基塊體非晶合金力學(xué)性能和腐蝕性能的影響
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1.蘭州理工大學(xué) 省部共建有色金屬先進加工與再利用國家重點實驗室，甘肅 蘭州 730050;2.蘭州理工大學(xué) 材料科學(xué)與工程學(xué)院，甘肅 蘭州 730050

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基金項目:

the National Natural Science Foundation of China (51861021, 51661016, 51571105, 51661017) and the Hongliu First-class Discipline Construction Plan of Lanzhou University of Technology


Effect of Tm on Mechanical and Corrosion Properties of Zr-Based Bulk Metallic Glasses
Author:
Affiliation:

1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Fund Project:

National Natural Science Foundation of China (51861021, 51661016, 51571105, 51661017)

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    摘要:

    采用銅模負(fù)壓吸鑄工藝制備了(Zr0.6336Cu0.1452Ni0.1012Al0.12)100-xTmx（x=0~5，原子分?jǐn)?shù)）塊體金屬玻璃（BMG）合金，研究了Tm對合金力學(xué)性能和抗腐蝕性能的影響。結(jié)果表明，當(dāng)Tm含量增加到3%時，其玻璃形成能力（GFA）和壓縮塑性顯著提高，但過量Tm會降低GFA。x=3時合金的最大過冷液相區(qū)寬度為100 K，抗壓強度為1669 MPa，塑性應(yīng)變?yōu)?1.01%，遠(yuǎn)高于Zr0.6336Cu0.1452Ni0.1012Al0.12 BMG的各項性能（67 K、1439 MPa和5.90%）。然而，電化學(xué)測試結(jié)果表明，x=3時的合金在3.5%（質(zhì)量分?jǐn)?shù)）NaCl溶液中的耐腐蝕性不佳，且其耐腐蝕性和力學(xué)性能隨Tm含量的變化趨勢與預(yù)期不同?？赡苁怯捎谶^量添加稀土元素Tm，容易形成更多的氧化物，導(dǎo)致點蝕加劇。進一步添加Tm可以提高Zr基BMG鈍化膜的完整性和耐點蝕性能，但力學(xué)性能不理想。

    Abstract:

    A series of (Zr0.6336Cu0.1452Ni0.1012Al0.12)100-xTmx (x=0~5, at%) bulk metallic glass (BMG) alloys were fabricated by copper mold suction casting, and the effect of Tm on the mechanical and corrosion properties were investigated. The results show that when Tm content increases to 3at%, the glass forming ability (GFA) and compressive plasticity are significantly improved, whereas GFA is decreased by adding excessive Tm. The maximum supercooled liquid region width (ΔTx) of the alloy with x=3 is 100 K, the compressive fracture strength is 1669 MPa, and the plastic strain is 21.01%, which are much higher than those of the Zr0.6336Cu0.1452Ni0.1012Al0.12 BMG (67 K, 1439 MPa, and 5.90%). However, the electrochemical test results show that the alloy with x=3 does not have excellent corrosion resistance in 3.5wt% NaCl solution, and the change trend of corrosion resistance and mechanical properties with Tm content is different from the expectation. The possible reason is that the excessive addition of rare-earth element Tm easily causes more oxides, which leads to the severe pitting corrosion. Further addition of Tm can improve the integrity and pitting corrosion resistance of Zr-based BMG passivation film, but the mechanical properties are not ideal.

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王順平,李春燕,李金玲,王海博,寇生中.Tm對鋯基塊體非晶合金力學(xué)性能和腐蝕性能的影響[J].稀有金屬材料與工程,2021,50(9):3076~3084.[Wang Shunping, Li Chunyan, Li Jinling, Wang Haibo, Kou Shengzhong. Effect of Tm on Mechanical and Corrosion Properties of Zr-Based Bulk Metallic Glasses[J]. Rare Metal Materials and Engineering,2021,50(9):3076~3084.]
DOI：10.12442/j. issn.1002-185X.20200553

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  • 收稿日期:2020-07-29
  • 最后修改日期:2020-09-05
  • 錄用日期:2020-09-10
  • 在線發(fā)布日期: 2021-09-26
  • 出版日期: 2021-09-24