Electrochemical behaviour of laser solid formed Ti-6Al-4V alloy in a highly concentrated NaCl solution

被引：89
作者：
Li, Jiaqiang [1 ,2 ]
Lin, Xin [1 ,2 ]
Guo, Pengfei [1 ,2 ]
Song, Menghua [1 ,2 ]
Huang, Weidong [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ, Key Lab Met High Performance Addit Mfg & Innovat, MIIT China, 127 Youyixilu, Xian 710072, Shannxi, Peoples R China
来源：
CORROSION SCIENCE | 2018年 / 142卷
基金：
中国国家自然科学基金;
关键词：
Titanium; Polarization; EIS; Anodic dissolution; Additive manufacturing (AM); COMMERCIALLY PURE TITANIUM; DIRECTED ENERGY DEPOSITION; CORROSION-RESISTANCE; MECHANICAL-PROPERTIES; DISSOLUTION BEHAVIOR; TI-13NB-13ZR ALLOY; ANODIC-DISSOLUTION; GRAIN-SIZE; TI; MICROSTRUCTURE;
D O I：
10.1016/j.corsci.2018.07.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Grain characteristics exhibit significant effects on electrochemical machining. The effects of the surface of grains on the electrochemical behaviour of laser solid formed Ti-6Al-4V deposits were investigated using a 15 wt.% NaCl solution. The epitaxial growth behaviour caused the deposits to generally exhibit columnar grains near the lateral surface and equiaxed-shape grains near the top surface. The coarser columnar grains presented inferior corrosion resistance, while the equiaxed grains exhibited slightly better corrosion resistance but distinctly poorer electrochemical machinability. The increase in the beta/alpha volume ratio of the grain decreased its corrosion resistance but increased the transpassive dissolution potential.
引用
收藏
页码：161 / 174
页数：14
相关论文
共 63 条
[31]  
Levy M., 2013, CORROS HOUSTON TX, V23, P236
[32]  
Leyens Christoph., 2006, Titanium and Titanium Alloys: Fundamentals and Applications
[33]   Corrosion resistance and mechanical properties of titanium with hierarchical micro-nanostructure [J].
Li, Baoe ;
Wang, Xiaolin ;
Min, Yang ;
Liang, Chunyong ;
Li, Haipeng ;
Guo, Litong ;
Liu, Shimin ;
Wang, Hongshui .
MATERIALS LETTERS, 2016, 182 :43-46
[34]  
Li D. Y., 2005, MRS P, V887
[35]  
LI HJ, 2016, SCI REP UK, V6
[36]   The influences of processing parameters on forming characterizations during laser rapid forming [J].
Li, YM ;
Yang, H ;
Lin, X ;
Huang, WD ;
Li, JG ;
Zhou, YH .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 360 (1-2) :18-25
[37]   Microstructure and phase evolution in laser rapid forming of a functionally graded Ti-Rene88DT alloy [J].
Lin, X ;
Yue, TM ;
Yang, HO ;
Huang, WD .
ACTA MATERIALIA, 2006, 54 (07) :1901-1915
[38]   Columnar to equiaxed transition during alloy solidification [J].
Lin, X ;
Li, YM ;
Wang, M ;
Feng, LP ;
Chen, J ;
Huang, WD .
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES, 2003, 46 (05) :475-489
[39]   Electrochemical Machining-mechanisms of anodic dissolution [J].
Lohrengel, M. M. ;
Rataj, K. P. ;
Munninghoff, T. .
ELECTROCHIMICA ACTA, 2016, 201 :348-353
[40]   Improved corrosion behavior of nanocrystalline Cu-20Zr films in HCl solution [J].
Lu, Hai-Bo ;
Li, Ying ;
Wang, Fu-Hui .
THIN SOLID FILMS, 2006, 510 (1-2) :197-202
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