赵光伟,邹海峰,方东,黄才华,叶喜葱,戴雷

• 1:三峡大学石墨增材制造技术与装备湖北省工程研究中心
• 2:三峡大学机械与动力学院

摘要(Abstract)：

采用真空电弧熔炼制备了(Ti_(40-x)Hf_(10)Ta_x)_(50)(NiCu)_(50)(x=0、1、5和10,at%)高熵记忆合金，通过扫描电镜(SEM)、X射线衍射(XRD)和室温循环压缩等研究了Ta含量与加载条件等对合金显微组织、力学性能、超弹性与稳定性等的影响。结果表明：铸态(Ti_(40-x)Hf_(10)Ta_x)_(50)(NiCu)_(50)高熵记忆合金兼具优良的力学性能与超弹性，与现有2～4元Ti基记忆合金相比拥有较高的输出功；在预应变为15%时，Ta0、Ta1和Ta5合金的施加应力为1390.8、1591.2和2101.7 MPa,输出功为100.2、124.3和197.4 J/cm~3。随Ta含量的增加，合金断裂强度和伸长率下降，但Ta1和Ta5合金的屈服强度与可回复应变增加，最大可回复应变分别为7.8%和9.4%,其中超弹性应变分别为4.0%和4.4%,加热后总可回复应变分别达到10.1%和10.6%。在应变递增的循环压缩过程中，合金的可回复应变、超弹性应变等随着应变的增加逐渐增大，循环后期增速减小，而在应变为固定值的循环压缩过程中，经5～6次循环后，合金的回复率可达100%,超弹性、应力滞后、输出功等趋于稳定。

关键词(KeyWords)： 高熵记忆合金;超弹性;可回复应变;输出功;稳定性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52171037);; 石墨增材制造技术与装备湖北省工程研究中心(三峡大学)开放基金资助项目(HRCGAM202104)

作者(Author): 赵光伟,邹海峰,方东,黄才华,叶喜葱,戴雷

DOI: 10.13289/j.issn.1009-6264.2023-0086

参考文献(References)：

• [1] Firstov G S,Kosorukova T A,Koval Y N.High entropy shape memory alloys[J].Materials Today:Proceedings,2015,2S:499-504.
• [2] Firstov G S,Kosorukova T A,Koval Y N,et al.Directions for high-temperature shape memory alloys’ improvement:Straight way to high-entropy materials?[J].Shape Memory and Superelasticity,2015,1(4):400-407.
• [3] Piorunek D,Frenzel J,J?ns N,et al.Chemical complexity,microstructure and martensitic transformation in high entropy shape memory alloys[J].Intermetallics,2020,122:106792.
• [4] Gao J J,Castany P,Gloriant T.Synthesis and characterization of a new TiZrHfNbTaSn high-entropy alloy exhibiting superelastic behavior[J].Scripta Materialia,2021,198:113824.
• [5] Chen C H,Chen Y.Shape memory characteristics of (TiZrHf)50Ni25Co10Cu15 high entropy shape memory alloy[J].Scripta Materialia,2019,162:185-189.
• [6] Li S H,Cong D Y,Chen Z,et al.A high-entropy high-temperature shape memory alloy with large and complete superelastic recovery[J].Materials Research Letters,2021,9(6):263-269.
• [7] Wang L,Fu C,Wu Y D,et al.Superelastic effect in Ti-rich high entropy alloys via stress-induced martensitic transformation[J].Scripta Materialia,2019,162:112-117.
• [8] Canadinc D,Trehern W,Ma J,et al.Ultra-high temperature multi-component shape memory alloys[J].Scripta Materialia,2019,158:83-87.
• [9] 李斌强，王亮，姚龙辉，等.高熵形状记忆合金的研究进展[J].稀有金属材料与工程，2021,50(6):2208-2214.LI Bin-qiang,WANG Liang,YAO Long-hui,et al.Research progress of high entropy shape memory alloys[J].Rare Metal Materials and Engineering,2021,50(6):2208-2214.
• [10] 邹芹，宋锦涛，李艳国，等.形状记忆高熵合金的研究进展与展望[J].燕山大学学报，2022,46(2):95-103.ZOU Qin,SONG Jin-tao,LI Yan-guo,et al.Research progress and prospect of high entropy shape memory alloys[J].Journal of Yanshan University,2022,46(2):95-103.
• [11] Hashimoto N,Zain Y A,Yamamoto A,et al.Novel beta-type high entropy shape memory alloys with low magnetic susceptibility and high biocompatibility[J].Materials Letters,2021,287:129286.
• [12] Chen C H,Lu N H,Shen J J,et al.Strain glass and stress-induced martensitic transformation characteristics of Ti40Zr10Ni40Co5Cu5 multi-principal element alloy[J].Scripta Materialia,2020,186:127-131.
• [13] Rajeshwar R E,Margarita K,Mikhail T,et al.Exceptionally high strain-hardening and ductility due to transformation induced plasticity effect in Ti-rich high-entropy alloys[J].Scientific Reports,2020,10:13293.
• [14] Chen X R,Zhang F,Chi M Y,et al.Microstructure,superelasticity and shape memory effect by stress-induced martensite stabilization in Cu-Al-Mn-Ti shape memory alloys[J].Materials Science and Engineering B,2018,236-237:10-17.
• [15] Shamsolhodaei A,Zarei A,Abedi H R,et al.Twin-based martensite stabilizing and improving the shape memory response of near equiatomic NiTi alloy through multi-axial forging[J].Journal of Materials Research and Technology,2022,16:39-46.
• [16] Zhao G W,Li D,Xu G X,et al.As-cast high entropy shape memory alloys of (TiHfX)50(NiCu)50 with large recoverable strain and good mechanical properties[J].Journal of Materials Engineering and Performance,2022,31(12):10089-10098.
• [17] Chang S H,Kao W P,Hsiao K Y,et al.High-temperature shape memory properties of Cu15Ni35Ti25Hf12.5Zr12.5 high-entropy alloy[J].Journal of Materials Research and Technology,2021,14:1235-1242.
• [18] Kim J S,Kim Y J,Kim W C,et al.Enhancement in strength and superelastic cyclic durability by addition of Si in Ni-Ti-Cu-Zr alloy[J].Intermetallics,2020,124:106867.
• [19] Tong Y X,Chen F,Tian B,et al.Microstructure and martensitic transformation of Ti49Ni51-xHfx high temperature shape memory alloys[J].Materials Letters,2009,63(21):1869-1871.
• [20] Sun K S,Yi X Y,Sun B,et al.The effect of Hf on the microstructure,transformation behaviors and the mechanical properties of Ti-Ni-Cu shape memory alloys[J].Journal of Alloys and Compounds,2019,772:603-611.
• [21] Li J,Yi X Y,Sun K S,et al.The effect of Zr on the transformation behaviors,microstructure and the mechanical properties of Ti-Ni-Cu shape memory alloys[J].Journal of Alloys and Compounds,2018,747:348-353.
• [22] Sun G A,Wang X L,Wang Y D,et al.In-situ high-energy synchrotron X-ray diffraction study of micromechanical behavior of multiple phases in Ni47Ti44Nb9 shape memory alloy[J].Materials Science and Engineering A,2013,560:458-465.
• [23] Yi X Y,Gao W H,Meng X L,et al.Martensitic transformation behaviors and mechanical properties of (Ti36Ni49Hf15)100-xYx high temperature shape memory alloys[J].Journal of Alloys and Compounds,2017,705:98-104.
• [24] Pavón L L,Cuellar E L,Hernandez S V,et al.Effect of heat treatment condition on microstructure and superelastic properties of Ti24Zr10Nb2Sn[J].Journal of Alloys and Compounds,2019,782:893-898.
• [25] Zhao Y,Ming F,Jia N,et al.High-strength superelastic as-cast Ni50.9Ti49.1-TiB2 in-situ composites[J].Materials Science and Engineering A,2021,818:141451.
• [26] Abuzaid W,Sehitoglu H.Superelasticity and functional fatigue of single crystalline FeNiCoAlTi iron-based shape memory alloy[J].Materials & Design,2018,160:642-651.
• [27] Hua P,Chu K J,Ren F Z,et al.Cyclic phase transformation behavior of nanocrystalline NiTi at microscale[J].Acta Materialia,2020,185:507-517.
• [28] Ghassemi A H,Leff A C,Taheri M L,et al.Cyclic compression response of micropillars extracted from textured nanocrystalline NiTi thin-walled tubes[J].Acta Materialia,2017,136:134-147.
• [29] 李少辉.Ti-Zr-Hf-Ni-Cu(Co)高熵形状记忆合金马氏体相变及功能行为研究[D].北京：北京科技大学，2021.LI Shao-hui.Study on martensitic transformation and functional behavior of Ti-Zr-Hf-Ni-Cu(Co) high-entropy shape memory alloys[D].Beijing:University of Science and Technology Beijing,2021.
• [30] Yaacoub J,Abuzaid W,Brenne F,et al.Superelasticity of (TiZrHf)50Ni25Co10Cu15 high entropy shape memory alloy[J].Scripta Materialia,2020,186:43-47.
• [31] Lee H C,Chen Y J,Chen C H.Effect of solution treatment on the shape memory functions of (TiZrHf)50Ni25Co10Cu15 high entropy shape memory alloy[J].Entropy,2019,21(10):1027.
• [32] Li S H,Cong D Y,Sun X M,et al.Wide-temperature-range perfect superelasticity and giant elastocaloric effect in a high entropy alloy[J].Materials Research Letters,2019,7:482-489.
• [33] Zhao G W,Chen J,Ye Y S,et al.Effect of Mo on the microstructure and superelasticity of Ti-Ni-Cu shape memory alloys[J].Journal of Materials Engineering and Performance,2021,30(1):617-626.
• [34] Liu S S,Xia C Q,Yang T,et al.High strength and superior corrosion resistance of the Ti-Ni-Cu-Zr crystal/glassy alloys with superelasticity[J].Materials Letters,2020,260:126938.
• [35] Karaca H E,Acar E,Basaran B,et al.Effects of aging on[1 1 1] oriented NiTiHfPd single crystals under compression[J].Scripta Materialia,2012,67:728-731.
• [36] Chen H,Xiao F,Liang X,et al.Stable and large superelasticity and elastocaloric effect in nanocrystalline Ti-44Ni-5Cu-1Al (at%) alloy[J].Acta Materialia,2018,158:330-339.
• [37] Sehitoglu H,Wu Y,Patriarca L,et al.Superelasticity and shape memory behavior of NiTiHf alloys[J].Shape Memory and Superelasticity,2017,3(2):168-187.
• [38] Saghaian S M,Karaca H E,Tobe H,et al.High strength NiTiHf shape memory alloys with tailorable properties[J].Acta Materialia,2017,134:211-220.
• [39] Yi X Y,Sun K S,Gao W H,et al.Martensitic transformation and mechanical properties of Ti-Ni-Hf high temperature shape memory alloy with network structure second particles[J].Journal of Alloys and Compounds,2018,735:1219-1226.
• [40] Chen J,Zhang S W,Zhang Y H,et al.A study on the cold workability and shape memory effect of NiTiHf-Nb eutectic high-temperature shape memory alloy[J].Intermetallics,2020,127:106982.
• [41] Yi X Y,Meng X L,Cai W,et al.Larger strain recovery characteristics of Ti-Ni-Hf shape memory alloy composite under compression[J].Scripta Materialia,2018,153:90-93.
• [42] Yi X Y,Shen G J,Meng X L,et al.The higher compressive strength (TiB+La2O3)/Ti-Ni shape memory alloy composite with the larger recoverable strain[J].Composites Communications,2021,23:100583.
• [43] Yang S Y,Chi M Y,Zhang J X,et al.Shape memory effect promoted through martensite stabilization induced by the precipitates in Cu-Al-Mn-Fe alloys[J].Materials Science and Engineering A,2019,739:455-462.

文章评论(Comment)：