马鑫洁,张磊

• 1:南昌航空大学材料科学与工程学院

摘要(Abstract)：

采用X射线衍射仪、扫描电镜、透射电镜和摩擦磨损实验等研究了固溶处理对重力铸造法制备的Mg_(84)Y_8Zn_8合金组织和耐磨性能的影响。结果表明:固溶处理前后,Mg_(84)Y_8Zn_8合金的组织均主要由LPSO相、W相和α-Mg组成;固溶处理后,合金中LPSO相的体积分数由铸态时的84.8%增加到91.6%,其结构由18R转变为14H型,而W相由9.7%降低到6.4%,合金具有更低的摩擦系数和更小的磨损率,表明固溶处理能改善合金的耐磨性能;当载荷为9 N时,铸态合金磨损机制为严重塑性变形、剥层磨损和严重氧化磨损,而固溶态合金磨损机制为伴随氧化磨损的剥层磨损。

关键词(KeyWords)： Mg_(84)Y_8Zn_8合金;LPSO相;组织;耐磨性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52461010);; 江西省自然科学基金(20242BAB25207);; 南昌航空大学第十九届“三小”重点项目(2024ZD145)

作者(Author): 马鑫洁,张磊

DOI: 10.13289/j.issn.1009-6264.2024-0501

参考文献(References)：

• [1]王建利,裴娟,袁姣娜,等. Sn元素对生物医用镁合金Mg-4. 5Zn-Sn显微组织和耐蚀性能的影响[J].材料热处理学报,2018,39(6):26-34.WANG Jian-li,PEI Juan,YUAN Jiao-na,et al. Effect of Sn element on microstructure and corrosion resistance of biomedical Mg-4. 5Zn-Sn alloys[J]. Transactions of Materials and Heat Treatment,2018,39(6):26-34.
• [2]王武孝,刘雪雍,王娜,等.超声处理对Mg-9Al-Zn-0. 6Ce-1. 2Ca镁合金组织及耐蚀性的影响[J].材料热处理学报,2019,40(1):44-49.WANG Wu-xiao,LIU Xue-yong,WANG Na,et al. Effects of ultrasonic treatment on microstructure and corrosion resistance of Mg-9Al-Zn-0. 6Ce-1. 2Ca magnesium alloy[J]. Transactions of Materials and Heat Treatment,2019,40(1):44-49.
• [3] Trojanova Z,Donic T,Lukac P,et al. Tensile and fracture properties of an Mg-RE-Zn alloy at elevated temperatures[J]. Journal of Rare Earths,2014,32(6):564-572.
• [4] Zhang E,Yang L,Xu J,et al. Microstructure,mechanical properties and bio-corrosion properties of Mg-Si(-Ca,Zn)alloy for biomedical application[J]. Acta Biomaterialia,2010,6(5):1756-1762.
• [5] Ben-Hamu G,Eliezer D,Shin K S. The role of Mg2Si on the corrosion behavior of wrought Mg-Zn-Mn alloy[J]. Intermetallics,2008,16:860-867.
• [6] Wang Y,Zhang Y,Wang P,et al. Effect of LPSO phases and aged-precipitations on corrosion behavior of as-forged Mg-6Gd-2Y-1Zn-0. 3Zr alloy[J]. Journal of Materials Research and Technology,2020,9(4):7087-7099.
• [7] Saal J E,Wolverton C. Thermodynamic stability of Mg-based ternary long-period stacking ordered structures[J]. Acta Materialia,2014,68:325-338.
• [8] Zhu Y M,Morton A J,Nie J F. The 18R and 14H long-period stacking ordered structures in Mg-Y-Zn alloys[J]. Acta Materialia,2010,58(8):2936-2947.
• [9] Kawamura Y,Yamasaki M. Formation and mechanical properties of Mg97Zn1RE2 alloys with long-period stacking ordered structure[J]. Materials Transactions,2007,48:2986-2992.
• [10] Wang Y,Zhang F,Wang Y,et al. Effect of Zn content on the microstructure and mechanical properties of Mg-Gd-Y-Zr alloys[J].Materials Science and Engineering A,2019,745:149-158.
• [11] Wen K,Du W B,Liu K,et al. Precipitation behavior of the 14H-LPSO structure in Mg-12Gd-2Er-1Zn-0. 6Zr alloy[J]. Rare Metals,2015,43(4):369-375.
• [12] An J,Xuan X H,Zhao J,et al. Dry sliding wear behavior and subsurface microstructure evolution of Mg97Zn1Y2 alloy in a wide sliding speed range[J]. Journal of Materials Engineering&Performance,2016,25:5363-5373.
• [13] Matsuda M,Li S,Kawamura Y,et al. Variation of long-period stacking order structures in rapidly solidified Mg97Zn1Y2 alloy[J].Materials Science and Engineering A,2005,393:269-274.
• [14] Lyu J,Kim J,Liao H,et al. Effect of substitution of Zn with Ni on microstructure evolution and mechanical properties of LPSO dominant Mg-Y-Zn alloys[J]. Materials Science and Engineering A,2020,773:138735.
• [15] Han D,Chen H,Zang Q,et al. Effect of solution treatment on microstructure and properties of Mg-6Gd-3Y-1. 5Zn-0. 6Zr alloy[J].Materials Characterization,2020,163:110295.
• [16] Yang X,Wu S S,Lv S L,et al. Effects of Ni levels on microstructure and mechanical properties of Mg-Ni-Y alloy reinforced with LPSO structure[J]. Journal of Alloys and Compounds,2017,726:276-283.
• [17] Liao H,Kim J,Lee T,et al. Effect of heat treatment on LPSO morphology and mechanical properties of Mg-Zn-Y-Gd alloys[J].Journal of Magnesium and Alloys,2020,8(4):1120-1127.
• [18] Wang D,Wu H,Wu R,et al. The transformation of LPSO type in Mg-4Y-2Er-2Zn-0. 6Zr and its response to the mechanical properties and damping capacities[J]. Journal of Magnesium and Alloys,2020,8(3):793-798.
• [19] Luo Z P,Zhang S Q. High-resolution electron microscopy on the X-Mg12Zn Y phase in a high strength Mg-Zn-Ti-Y magnesium alloy[J]. Journal of Materials Science Letters,2000,19:813-815.
• [20] Qin D H,Wang J F,Chen Y L,et al. Effect of long period stacking ordered structure on the damping capacities of Mg-Ni-Y alloys[J]. Materials Science and Engineering A,2015,624:9-13.
• [21] Hu M,Wang Q,Chen C,et al. Dry sliding wear behaviour of Mg-10Gd-3Y-0. 4Zr alloy[J]. Materials&Design,2012,42(42):223-229.
• [22] Zhang L,Huang H,Zhang S J,et al. Microstructure,Mechanical properties and tribological behavior of two-phase Mg-Y-Cu alloys with long period stacking ordered phases[J]. Metals and Materials International,2021,27:1605-1612.
• [23] Xiao P,Gao Y M,Xu F X,et al. Tribological behavior of in-situ nanosized Ti B2 particles reinforced AZ91 matrix composite[J].Tribology International,2018,128:130-139.
• [24] Das S,Morales A,Alpas A T. Microstructural evolution during high temperature sliding wear of Mg-3%Al-1%Zn(AZ31)alloy[J]. Wear,2010,268:94-103.
• [25] An J,Li R G,Lu Y,et al. Dry sliding wear behavior of magnesium alloys[J]. Wear,2008,265:97-104.

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