Laser additive synthesis of high entropy alloy coating on aluminum: Corrosion behavior

High entropy alloy coatings were synthesized on aluminum substrate by laser surface engineering. Dilution from the substrate was minimized with the aid of multi layered coatings. Furthermore, higher laser input energy during processing lead to uniform mixing amongst the components resulting in formation of evenly distributed high entropy alloy phases throughout the matrix. This resulted in enhanced corrosion resistance for the coatings in near neutral NaCl solution.

[1]  J. Yeh,et al.  Mechanical performance of the AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements , 2005 .

[2]  C. Li,et al.  Effect of aluminum contents on microstructure and properties of AlxCoCrFeNi alloys , 2010 .

[3]  J. Yeh,et al.  Phases, microstructure and mechanical properties of AlxCoCrFeNi high-entropy alloys at elevated temperatures , 2014 .

[4]  J. Yeh,et al.  Microstructure and electrochemical properties of high entropy alloys—a comparison with type-304 stainless steel , 2005 .

[5]  B. Li,et al.  Microstructure and compressive properties of AlCrFeCoNi high entropy alloy , 2008 .

[6]  Jien-Wei Yeh,et al.  Nanostructured nitride films of multi-element high-entropy alloys by reactive DC sputtering , 2004 .

[7]  Swe-Kai Chen,et al.  Electrochemical passive properties of AlxCoCrFeNi (x = 0, 0.25, 0.50, 1.00) alloys in sulfuric acids , 2010 .

[8]  Lin Li,et al.  Synthesis and Characterization of High-Entropy Alloy AlFeCoNiCuCr by Laser Cladding , 2011 .

[9]  B. S. Murty,et al.  Decomposition in multi-component AlCoCrCuFeNi high-entropy alloy , 2011 .

[10]  Xin Lin,et al.  Microstructure and Corrosion Properties of AlCoCrFeNi High Entropy Alloy Coatings Deposited on AISI 1045 Steel by the Electrospark Process , 2013, Metallurgical and Materials Transactions A.

[11]  T. Shun,et al.  Nanostructured High‐Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes , 2004 .

[12]  Anil Kumar Singh,et al.  On the formation of disordered solid solutions in multi-component alloys , 2014, Journal of Alloys and Compounds.

[13]  Sameehan S. Joshi,et al.  Laser assisted high entropy alloy coating on aluminum: Microstructural evolution , 2014 .

[14]  Hui Zhang,et al.  Synthesis and characterization of FeCoNiCrCu high-entropy alloy coating by laser cladding , 2011 .

[15]  Yun-peng Zhang,et al.  Microstructure and corrosion resistance of AlCrFeCuCo high entropy alloy , 2013 .

[16]  C. Liu,et al.  Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase , 2011 .

[17]  Jiangbo Cheng,et al.  Formation and Mechanical Properties of CoNiCuFeCr High-Entropy Alloys Coatings Prepared by Plasma Transferred Arc Cladding Process , 2013, Plasma Chemistry and Plasma Processing.

[18]  Fuyang Tian,et al.  Structural stability of NiCoFeCrAlx high-entropy alloy from ab initio theory , 2013 .

[19]  S. Ranganathan,et al.  Alloyed pleasures: Multimetallic cocktails , 2003 .

[20]  H. Tsai,et al.  Evolution of microstructure, hardness, and corrosion properties of high-entropy Al0.5CoCrFeNi alloy , 2011 .

[21]  Yang Wang,et al.  Annealing on the structure and properties evolution of the CoCrFeNiCuAl high-entropy alloy , 2010 .

[22]  Ye Pan,et al.  Synthesis and Characterization of NiCoFeCrAl3 High Entropy Alloy Coating by Laser Cladding , 2010 .

[23]  Hui Zhang,et al.  Microstructure and properties of 6FeNiCoSiCrAlTi high-entropy alloy coating prepared by laser cladding , 2011 .

[24]  P. Liaw,et al.  High-entropy Alloys with High Saturation Magnetization, Electrical Resistivity, and Malleability , 2013, Scientific Reports.

[25]  B. S. Murty,et al.  Hot consolidation and mechanical properties of nanocrystalline equiatomic AlFeTiCrZnCu high entropy alloy after mechanical alloying , 2010 .