Formation mechanism and improved properties of Cu95Fe5 homogeneous immiscible composite coating by the combination of mechanical alloying and laser cladding

被引:41
作者
Dai, Xiaoqin [1 ]
Xie, Min [1 ]
Zhou, Shengfeng [1 ]
Wang, Chunxia [2 ]
Gu, Menghao [2 ]
Yang, Jiaoxi [3 ]
Li, Zhengyang [4 ]
机构
[1] Tianjin Polytech Univ, Laser Technol Inst, Tianjin 300387, Peoples R China
[2] Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China
[3] Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China
[4] Chinese Acad Sci, Inst Mech, Beijing 10090, Peoples R China
基金
中国国家自然科学基金;
关键词
Immiscible alloy; Liquid phase separation; Cu-Fe; Microstructure; Magnetic properties; DROPLET SPINODAL DECOMPOSITION; CO-FE ALLOYS; PHASE-SEPARATION; CU ALLOYS; MICROSTRUCTURE EVOLUTION; SOLIDIFICATION; AMORPHIZATION; PROTECTION; SUBSTRATE; CORROSION;
D O I
10.1016/j.jallcom.2018.01.007
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In order to improve the homogeneity of spherical Fe-rich particles within the Cu-rich matrix, the Cu95Fe5 (wt%) immiscible composite coating has been produced by the combination of mechanical alloying and laser cladding. The results show that the milled composite powder presents a polygonal morphology and is mainly composed of face-centered-cubic (fcc)-Cu solid solution. The demixing or delimitation is eliminated in the immiscible composite coating produced by laser cladding and large amounts of spherical alpha-Fe particles are dispersed within the epsilon-Cu matrix as a result of liquid phase separation (LPS). The size of the Fe-rich particles measured is in radius of similar to 1.5 mu m, which is much smaller than the calculated critical radius (similar to 2.3 mu m), confirming that the alpha-Fe particles containing a supersaturated Cu are driven by the dominant mechanism of Marangoni motion. Compared to Brass, the immiscible composite coating exhibits the improved homogeneous microhardness (153HV(0.2)) and higher corrosion resistance, as well as a saturated magnetization of similar to 9.19 emu/g and low coercivity of similar to 9.25 Oe. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:194 / 202
页数:9
相关论文
共 43 条
[1]   Grain boundary segregation in immiscible nanocrystalline alloys [J].
Abdeljawad, Fadi ;
Lu, Ping ;
Argibay, Nicolas ;
Clark, Blythe G. ;
Boyce, Brad L. ;
Foiles, Stephen M. .
ACTA MATERIALIA, 2017, 126 :528-539
[2]   The formation of supersaturated solid solutions in Fe-Cu alloys deformed by high-pressure torsion [J].
Bachmaier, A. ;
Kerber, M. ;
Setman, D. ;
Pippan, R. .
ACTA MATERIALIA, 2012, 60 (03) :860-871
[3]   Sacrificial anode cathodic protection of aluminum-coated steel for automotive mufflers [J].
Choi, Y. -S. ;
Shin, D. -H. ;
Kim, J. -G. .
CORROSION, 2007, 63 (06) :522-528
[4]   Phase separation and rapid solidification of liquid Cu60Fe30Co10 ternary peritectic alloy [J].
Dai, FuPing ;
Cao, ChongDe ;
Wei, BingBo .
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY, 2007, 50 (04) :509-518
[5]   Microstructure evolution of phase separated Fe-Cu-Cr-C composite coatings by laser induction hybrid cladding [J].
Dai, Xiaoqin ;
Zhou, Shengfeng ;
Wang, Meifeng ;
Lei, Jianbo ;
Wang, Chunxia ;
Wang, Tao .
SURFACE & COATINGS TECHNOLOGY, 2017, 324 :518-525
[6]   Effect of substrate types on the microstructure and properties of Cu65Fe35 composite coatings by laser induction hybrid cladding [J].
Dai, Xiaoqin ;
Zhou, Shengfeng ;
Wang, Meifeng ;
Lei, Jianbo ;
Xie, Min ;
Chen, Hanning ;
Wang, Chunxia ;
Wang, Tao .
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 722 :173-182
[7]   Atomic arrangement in immiscible Ag-Cu alloys synthesized far-from-equilibrium [J].
Elofsson, V. ;
Almyras, G. A. ;
Lu, B. ;
Boyd, R. D. ;
Sarakinos, K. .
ACTA MATERIALIA, 2016, 110 :114-121
[8]   Combustion synthesis immiscible nanostructured Fe-Cu alloy [J].
Fu, Licai ;
Yang, Jun ;
Bi, Qinling ;
Liu, Weimin .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 482 (1-2) :L22-L24
[9]   Solidification microstructure and dynamics of metastable phase transformation in undercooled liquid Cu-Fe alloys [J].
He, J ;
Zhao, JZ ;
Ratke, L .
ACTA MATERIALIA, 2006, 54 (07) :1749-1757
[10]   Metastable BCC and FCC alloy bulk bodies in Fe-Cu system prepared by mechanical alloying and shock compression [J].
Huang, XS ;
Mashimo, T .
JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 288 (1-2) :299-305