FABRICATION AND WEAR BEHAVIOR ANALYSIS ON AlCrFeNi HIGH ENTROPY ALLOY COATING UNDER DRY SLIDING AND OIL LUBRICATION TEST CONDITIONS

2016 ◽  
Vol 23 (04) ◽  
pp. 1650018 ◽  
Author(s):  
YIPIN TANG ◽  
SHOUREN WANG ◽  
BIN SUN ◽  
YAN WANG ◽  
YANG QIAO
Keyword(s):  
Hot Pressing ◽  
Solution Structure ◽  
Wear Behavior ◽  
Alloy Coating ◽  
High Entropy Alloy ◽  
Dry Sliding ◽  
High Entropy Alloys ◽  
Oil Lubrication ◽  
High Entropy ◽  
Hot Pressing Sintering

In this paper, AlCrFeNi high entropy alloy coating was fabricated on the surface of Q235 steel using hot pressing sintering process. The coating has the controlled thickness size and excellent mechanical properties. Scanning electron microscopy (SEM), XRD and hardness testing method were used to study the morphology, phase structure and hardness of high entropy alloys coating. The lattice distortion plays a significant role in increasing the hardness. Coating formation mechanism caused by the element diffusion under the hot pressing effect is also discussed in the paper. Simultaneously, the dry sliding and oil lubrication wear tests, wear morphology observation and wear mechanism discussion were completed. As the result shows, AlCrFeNi high entropy alloys coating exhibits superior wear resistance either at dry sliding or oil lubrication tests owing to its hard high entropy solid solution structure.

Characterization and Properties of CuZrAlTiNiSi High Entropy Alloy Coating Obtained By Mechanical Alloying and Vacuum Hot-Pressing Sintering

JOM ◽  
2020 ◽  
Vol 72 (3) ◽  
pp. 1254-1263 ◽  
Author(s):  
Zihan Han ◽  
Dongzhi Wang ◽  
Xiaohan Chen ◽  
Guomang Shao ◽  
Xi Zhang ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Hot Pressing ◽  
Alloy Coating ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Vacuum Hot Pressing ◽  
Hot Pressing Sintering

scholarly journals Effect of Mo Addition on The Microstructure and Mechanical Properties of CoCuFeNi High Entropy Alloy

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1017
Author(s):  
Yang Shao ◽  
Huan Ma ◽  
Yibing Wang
Keyword(s):  
Mechanical Properties ◽  
Solution Structure ◽  
Tensile Tests ◽  
Atomic Ratio ◽  
Vacuum Arc ◽  
High Entropy Alloy ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Microstructure And Mechanical Properties ◽  
Mo Content

In order to reveal the effect of Mo addition on the microstructure and mechanical properties, (CoCuFeNi)100-xMox (x = 0, 10, 15, 19, and 25, x values in atomic ratio) high entropy alloys were prepared by vacuum arc-melting. The results showed that with Mo addition, the μ phase formed and serious separation occurred in the high entropy alloys. The content of μ phase increased with the increase in Mo content. The microstructure of the alloys changed from an initial single-phase face-center-cubic (FCC) solid solution structure (x = 0) to a hypoeutectic microstructure (x = 15), then to a full eutectic microstructure (x = 19), and finally to a hypereutectic microstructure (x = 25). Coherent interface between μ phase and FCC phase was observed. The (CoCuFeNi)81Mo19 alloy with fully eutectic microstructures exhibited the highest yield strength of 557 MPa and fracture strength of 767 MPa in tensile tests at room temperature. The fracture surface revealed that the formation of great amounts of the μ phase resulted in the loss of ductility of (CoCuFeNi)100-xMox alloys.

Study on wear behavior of FeNiCrCoCu high entropy alloy coating on Cu substrate based on molecular dynamics

2021 ◽  
Vol 570 ◽  
pp. 151236
Author(s):  
Junye Li ◽  
Liguang Dong ◽  
Xiwei Dong ◽  
Weihong Zhao ◽  
Jianhe Liu ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Wear Behavior ◽  
Alloy Coating ◽  
High Entropy Alloy ◽  
Cu Substrate ◽  
High Entropy

scholarly journals Electrodeposition of high entropy alloy coating from water bath

2018 ◽  
Vol 62 (1) ◽  
pp. 1-5 ◽  
Author(s):  
J. Bárta ◽  
S. Ivanová ◽  
M. Pazderová
Keyword(s):  
Alloy Coating ◽  
Thin Layers ◽  
Water Bath ◽  
High Entropy Alloy ◽  
High Entropy Alloys ◽  
Accelerated Corrosion ◽  
Metallic Substrates ◽  
High Entropy ◽  
Arc Melting ◽  
Accelerated Corrosion Tests

Abstract High entropy alloys (HEAs) have been in focus of scientist for past few years owing to their predicted scratch, corrosion and temperature resistance and also to interesting magnetic properties. They are usually prepared by arc melting of at least 5 pure elements. This article deals with electrodeposition of such five-element alloy from water bath, which have not been yet reported. The HEA coating consisting of Fe, Co, Ni, Mn and Mo or Zn was successfully electrodeposited on steel, copper and other metallic substrates. Substrates were polished and treated by sonication in acetone prior to electrodeposition. Obtained thin layers were documented by optical microscopy and SEM techniques. Their exact composition was determined by EDS and XRF analysis. Scratch and accelerated corrosion tests were performed to asses their resistance properties. Electrochemical properties were determined by measurements of polarization curves.

Microstructure and elevated temperature wear behavior of laser-cladded AlCrFeMnNi high-entropy alloy coating

2022 ◽  
Vol 149 ◽  
pp. 107845
Author(s):  
Mina Zhang ◽  
Dafeng Wang ◽  
Longjun He ◽  
Xuyang Ye ◽  
Wentai Ouyang ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Wear Behavior ◽  
Alloy Coating ◽  
High Entropy Alloy ◽  
High Entropy

Microstructure and wear behavior of FeCoNiCrMn high entropy alloy coating deposited by plasma spraying

2020 ◽  
Vol 385 ◽  
pp. 125430 ◽  
Author(s):  
Jin-Kun Xiao ◽  
Hong Tan ◽  
Yu-Qing Wu ◽  
Juan Chen ◽  
Chao Zhang
Keyword(s):  
Plasma Spraying ◽  
Wear Behavior ◽  
Alloy Coating ◽  
High Entropy Alloy ◽  
High Entropy
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