Effect of static high magnetic field on solidification structure, microsegregation and microhardness of Cu-15Ni-8Sn alloy

被引：0
|
作者：
Shen Z. [1 ,2 ]
Ren L. [1 ,2 ]
Lin Z.-Z. [1 ,2 ]
Zhu J.-L. [1 ,2 ]
Zhong Y.-B. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Shanghai University, Shanghai
[2] State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai
来源：
Zhong, Yun-Bo (yunboz@shu.edu.cn) | 1600年 / Central South University of Technology卷 / 31期
基金：
中国国家自然科学基金;
关键词：
Composition distribution; Cu-15Ni-8Snalloy; High magnetic field; Microsegregation;
D O I：
10.11817/j.ysxb.1004.0609.2021-39795
中图分类号：
学科分类号：
摘要：
The effect of static high magnetic field on the microstructure morphology, dendrite microsegregation and microhardness during the solidification of Cu-15Ni-8Sn alloy was studied. The results show that the 2 T high magnetic field has almost no effect on the microstructure or dendrite microsegregation of Cu-15Ni-8Sn alloy comparing with the condition of no magnetic field. While when the magnetic field increases to 4-6 T, the number of dendrites is significantly reduced, while the size of dendrites is significantly coarsened, and the content of Sn in the trunk of the dendrites is significantly reduced, while the content of Ni in the trunk of the dendrites is significantly increased. In addition, the application of high magnetic field can significantly increase the microhardness of dendrite trunk in Cu-15Ni-8Sn alloy. Comparing with the case without magnetic field, the magnetic field of 6 T increases the microhardness of dendrite trunk by 74.4%. The effect of static high magnetic field on the microsegregation and microhardness of Cu-Ni-Sn alloy is mainly related to the effect of magnetic field on the diffusion of Sn and Ni during solidification process. © 2021, Science Press. All right reserved.
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页码：1134 / 1142
页数：8
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共 30 条
  • [1] CHEN G, PENG Y, ZHENG G, Et al., Polysynthetic twinned TiAl single crystals for high-temperature applications, Nature Materials, 15, 8, pp. 876-881, (2016)
  • [2] ROEHLING J D, COUGHLIN D R, GIBBS J W, Et al., Rapid solidification growth mode transitions in Al-Si alloys by dynamic transmission electron microscopy, Acta Materialia, 131, pp. 22-30, (2017)
  • [3] WANG J, LI J, HU R, Et al., Anomalous magnetism and normal field instability in supercooled liquid cobalt, Applied Physics Letters, 105, (2014)
  • [4] WU Y, WANG W, CHANG J, Et al., Evolution kinetics of microgravity facilitated spherical macrosegregation within immiscible alloys, Journal of Alloys and Compounds, 763, pp. 808-814, (2018)
  • [5] SHEN Z, PENG M, ZHU D, Et al., Evolution of the microstructure and solute distribution of Sn-10wt% Bi alloys during electromagnetic field-assisted directional solidification, Journal of Materials Science & Technology, 35, 4, pp. 568-577, (2019)
  • [6] WANG Qiang, DONG Meng, SUN Jin-mei, Et al., Control of solidification process and fabrication of functional materials with high magnetic fields, Acta Metallurgica Sinica, 54, 5, pp. 742-756, (2018)
  • [7] LI X, FAUTRELLE Y, GAGNOUD A, Et al., Effect of a weak transverse magnetic field on solidification structure during directional solidification, Acta Materialia, 64, 2, pp. 367-381, (2014)
  • [8] LEHMANN P, MOREAU R, CAMEL D, Et al., Modification of interdendritic convection in directional solidification by a uniform magnetic field, Acta Materialia, 46, 11, pp. 4067-4079, (1998)
  • [9] FAN L, ZHONG Y, XU Y, Et al., Promoted diffusion mechanism of Fe2.7wt.%Si-Fe10wt.%Si couples under magnetic field by atomic-scale observations, Scientific Reports, 9, 1, (2019)
  • [10] ZHENG T, SHI P, SHEN Z, Et al., Diffusion-controlled mechanical property-enhancement of Al-20wt.%Si ribbon annealed under high static magnetic fields, from the microscale to the atomic scale, Materials & Design, 188, (2020)
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