铁替代部分锰对MnCoGe1.02合金马氏体相变和磁性能的影响
Effects of Fe Substitution for Partial Mn on Martensitic Transformation and Magnetic Properties of MnCoGe1.02 Alloy
摘 要
利用铁替代MnCoGe1.02合金中部分锰，采用电弧熔炼方法制备了Mn1-xFexCoGe1.02（x=0，0.01，0.03，0.06，0.09）合金，研究了合金的物相组成、晶体结构、马氏体相变和磁热效应。结果表明：用铁替代部分锰后，合金的晶格参数和晶胞体积均随铁含量的升高基本呈降低趋势，室温下MnCoGe1.02合金呈正交马氏体和六角奥氏体的两相结构，x=0.01和x=0.03时合金均为单一的正交马氏体相结构，x=0.06和x=0.09时合金为单一的六角奥氏体相结构；合金的马氏体相变温度随铁含量的增加先升高后降低，x=0.03时合金的相变温度最高；铁的添加有效提高了合金的磁化强度差，x=0.03时合金具有最大的磁化强度差，且在5 T、315 K时该合金的磁熵变最大，为18.7 J·K-1·kg-1，说明该合金具有较大的磁热效应。
铁
磁热效应
马氏体相变
MnCoGe magnetic material
Fe
magnetothermal effect
martensitic transformation
Abstract
Mn1-xFexCoGe1.02(x=0,0.01,0.03,0.06,0.09) alloy was prepared by arc smelting method using Fe to replace part of Mn in MnCoGe1.02 alloy, and the phase composition, crystal structure, martensitic transformation and magnetothermal effect of the alloy were studied.The results show that after replacing part of Mn with Fe, the lattice parameters and cell volume of the alloy basically showed a decreasing trend with increasing iron content. MnCoGe1.02 alloy at room temperature showed a coexisted structure with orthogonal martensite phase and hexagonal austenite phase. The alloys with x=0.01 and x=0.03 were both single orthogonal martensite phase structure. The alloys with x=0.06 and x=0.09 were both single hexagonal austenitic phase structure. The temperature of martensitic transformation increased first and then decreased with increasing Fe content, and the alloy with x=0.03 had the highest transformation temperature. The addition of Fe effectively improved the intensity difference of magnetization of the alloy. The alloy with x=0.03 had the largest intensity difference of magnetization, and at 5 T and 315 K, the alloy had the largest magnetic entropy change of 18.7 J·K-1·kg-1, indicating that the alloy had the relatively large magneto-thermal effect.
中图分类号 TG111 TG115 DOI 10.11973/jxgccl202104009
所属栏目 材料性能及应用
基金项目 国家自然科学资金青年科学基金资助项目（51401122）
收稿日期 2020/3/12
修改稿日期 2020/11/19
网络出版日期
作者单位点击查看
备注高丽(1978-),女,上海人,副教授,博士
引用该论文: GAO Li,TAO Zihao,FENG Ying,WANG Shu. Effects of Fe Substitution for Partial Mn on Martensitic Transformation and Magnetic Properties of MnCoGe1.02 Alloy[J]. Materials for mechancial engineering, 2021, 45(4): 46～50
高丽,陶子豪,冯影,王树. 铁替代部分锰对MnCoGe1.02合金马氏体相变和磁性能的影响[J]. 机械工程材料, 2021, 45(4): 46～50
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【3】PECHARSKY V K, GSCHNEIDNER K A. Tunable magnetic regenerator alloys with a giant magnetocaloric effect for magnetic refrigeration from 20 to 290 K[J]. Applied Physics Letters,1997,70:3299-3301.
【4】BAO L F, HU F X, CHEN L, et al. Magnetocaloric properties of La (Fe, Si)13-based material and its hydride prepared by industrial mischmetal[J]. Applied Physics Letters,2012,101:162406.
【5】HU F X,SHEN B G,SUN J R,et al.Influence of negative lattice expansion and metamagnetic transition on magnetic entropy change in the compound LaFe11.4Si1.6[J].Applied Physics Letters,2001,78(23):3675-3677.
【6】WANG G F, SONG L. Magnetocaloric effect on low field in non-stoichiometric MnFe(P,Si,Ge) alloys[J]. Acta Metallurgical Sinica,2007,43(8):889-892.
【7】KANOMATA T, ISHIGAKI H, SUZUKI T, et al. Magneto-volume effect of MnCo1-xGe(0 ≤ x ≤ 0.2)[J]. Journal of Magnetism and Magnetic Materials,1995, 140:131-132.
【8】JOHNSON V. Diffusionless orthorhombic to hexagonal transitions in ternary silicides and germanides[J]. Inorganic Chemistry,1975,14:1117-1120.
【9】SZYTUŁA A, PEDZIWIATR A T,TOMKOWICZ Z,et al.Crystal and magnetic structure of CoMnGe,CoFeGe,FeMnGe and NiFeGe[J].Journal of Magnetism and Magnetic Materials,1981,25(2):176-186.
【10】JEITSCHKO W. A high-temperature X-ray study of the displacive phase transition in MnCoGe[J]. Acta Crystallographica Section B, Structural Science,1975,31:1187.
【11】TRUNG N,ZHANG L,CARON L,et al.Giant magnetocaloric effects by tailoring the phase transitions[J].Applied Physics Letters,2010,96(17):172504.
【12】TRUNG N T, BIHARIE V, ZHANG L, et al. From single- to double-first-order magnetic phase transition in magnetocaloric Mn1-xCrxCoGe compounds[J]. Applied Physics Letters,2010, 96(16):162507.
【13】LIU J,SKOKOV K,GUTFLEISCH O.Magnetostructural transition and adiabatic temperature change in Mn-Co-Ge magnetic refrigerants[J].Scripta Materialia,2012,66(9):642-645.
【14】LIU E K, ZHU W, FENG L, et al. Vacancy-tuned paramagnetic/ferromagnetic martensitic transformation in Mn-poor Mn1-xCoGe alloys[J]. Europe Physics Letters Association,2010,91(1):17003.
【15】HASSAN N U,CHEN F H,ZHANG M G,et al.Realisation of magnetostructural coupling and a large magnetocaloric effect in the MnCoGe1+x system[J].Journal of Magnetism and Magnetic Materials,2017,439:120-125.
【16】LIN S, TEGUS O, BRVCK E, et al. Structural and magnetic properties of MnFe1-xCo<i>xGe compounds[J]. IEEE Transactions on Magnetics,2006,42:3776-3778.
【17】YVZVAK E, DINCER I, ELERMAN Y, et al. Enhancement on magnetocaloric effect in CoMn0.9Fe0.1Ge alloy[J]. Journal of Alloys and Compounds,2015,641:69-73.
【18】LIU E K,WANG W H,FENG L,et al.Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets[J].Nature Communications, 2012,3:873.
【19】WANG Z L,XIU P Y,HUANG L,et al.Observation of magnetic-field-induced transformation in MnCo0.78Fe0.22Ge alloys with colossal strain output and large magnetocaloric effect[J].Journal of Magnetism and Magnetic Materials, 2016,406:179-183.
【20】REN Q Y,HUTCHISON W D,WANG J L,et al.First-order magneto-structural transition and magnetocaloric effect in Mn(Co0.96Fe0.04)Ge[J].Journal of Alloys and Compounds, 2017,693:32-39.
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【23】CARON L, TRUNG N T, BRVCK E. Pressure-tuned magnetocaloric effect in Mn0.93Cr0.07CoGe[J]. Physics Review,2011,84:20414-20418.
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