Microstructures and Mechanical Performance of Plasma-Nitrided Al0.3CrFe1.5MnNi0.5 High-Entropy Alloys

Tang, Wei-Yeh; Chuang, Ming-Hao; Lin, Su-Jien

doi:10.1007/s11661-012-1108-6

Cited by 24 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[122][123][124] Non-metallic elements such as C, B, and N can also be incorporated to achieve even higher strength. [14,99,100,125,126] Additionally, HEAs can also be prepared by other process and/or in other forms. For example, HEAs can be processed by a wrought process including homogenization, hot/cold working, and annealing [62,64] to eliminate casting defects and improve microstructure.…”

Section: Corrosion Propertiesmentioning

confidence: 99%

High-Entropy Alloys: A Critical Review

Tsai

Yeh

2014

Materials Research Letters

Self Cite

2,518

853

View full text Add to dashboard Cite

High-entropy alloys (HEAs) are alloys with five or more principal elements. Due to the distinct design concept, these alloys often exhibit unusual properties. Thus, there has been significant interest in these materials, leading to an emerging yet exciting new field. This paper briefly reviews some critical aspects of HEAs, including core effects, phases and crystal structures, mechanical properties, high-temperature properties, structural stabilities, and corrosion behaviors. Current challenges and important future directions are also pointed out.

show abstract

Section: Corrosion Propertiesmentioning

confidence: 99%

High-Entropy Alloys: A Critical Review

Tsai

Yeh

2014

Materials Research Letters

Self Cite

2,518

853

View full text Add to dashboard Cite

show abstract

“…Plasma nitriding is a modern thermochemical treatment used for increasing the hardness, corrosion and wear resistance of metal parts [1][2][3][4][5][6][7][8][9][10][11]. The parts to be treated (known as the charge) form the cathode, and the furnace wall is the anode.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electric Potentials on Microstructure, Corrosion and Wear Characteristic of the Nitrided Layer Prepared on 2Cr13 Stainless Steel by Plasma Nitriding

Zhang

Qiu

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

Plasma nitriding is a widely used technology to enhance the surface performance and extend the service life of alloy parts. The current research mainly focuses on the influences of time, temperature, gas type and pressure parameters on nitriding behavior, while fewer studies have been conducted on the electric potential. This paper mainly reports the effect of the electric potential on nitriding behavior. Test conditions were set using cathodic, anodic and floating potentials in a plasma nitriding furnace. 2Cr13 stainless steel was nitrided at 450°C for 5 h in an NH 3 atmosphere. The experimental results show that the nitriding treatment can be well performed under the different electric potentials, but differences exist in microstructures, morphologies and performance results of the modified layers. The thickness and hardness values of the nitrided layer are ranked as follows: cathodic [ anodic [ floating potential. The anodic nitrided surface has an obvious particle deposition layer composed of nitrides and oxides. Electrochemical and tribological experiments show that the corrosion resistance and wear resistance were significantly improved after a nitriding treatment using the three electric potentials. Moreover, the floating nitriding treatment resulted in the best tribological performance and corrosion resistance.

show abstract

“…Since 2009, scholars have begun to conduct plasma nitriding experiments on high-entropy alloys to enhance the performance of the material's surface layer and expand its application fields. Previous studies have focused on nitriding temperatures ranging from 490 • C [17] to 550 • C, using NH 3 or N 2 + H 2 as the nitriding atmospheres, with nitriding times between 9 and 45 h. After nitriding treatment, the maximum thickness of the modified layer could reach 92.2 µm [18], with a significant increase in hardness and the formation of a uniform nitrided layer. The nitrided layer on the high-entropy alloy improved wear resistance by 49 to 80 times [18] compared to its untreated high-entropy alloy counterpart.…”

Section: Introductionmentioning

confidence: 99%

The Effect of La on the Surface Properties of Plasma Nitrided CoCrCuFeNi High-Entropy Alloys at 440 Degrees Celsius

Wang,

You,

Yan

et al. 2024

Coatings

View full text Add to dashboard Cite

This paper investigates the effect of the element La on plasma nitriding of the CoCrCuFeNi high-entropy alloy (HEA) at 440 °C for 8, 16, and 24 h. The phase composition, morphology, and hardness distribution of the nitrided layer are characterized using XRD, optical microscopy, and a microhardness tester. Furthermore, the corrosion resistance is tested using an electrochemical workstation. The study evaluated the friction and wear performance using a testing machine and scanning electron microscope. The thickness of the effective hardening layer after 16 h of treatment with La was similar to that after 24 h of treatment without La. The addition of La significantly increased the growth rate constant of the effective hardening layer from 0.53 × 10−14 m2/s to 0.72 × 10−14 m2/s. In addition, an expanded FCC phase with greater interplanar spacing can be formed on the surface of the sample by introducing La into the plasma nitriding process. This indicates that the expanded FCC phase, with a higher concentration of interstitial nitrogen atoms, can effectively improve the corrosion resistance of the specimen surface. The corrosion rate of the specimen surface was reduced by 27.5% and the wear rate was reduced by 41.7% after 16 h of treatment with the addition of La compared to 24 h of nitriding without the addition of La. It has been shown that the addition of La to the plasma nitriding process results in a higher quality nitrided layer in a shorter time and also demonstrates that La has the potential to optimize the surface properties of plasma nitrided HEAs.

show abstract

Microstructures and Mechanical Performance of Plasma-Nitrided Al0.3CrFe1.5MnNi0.5 High-Entropy Alloys

Cited by 24 publications

References 18 publications

High-Entropy Alloys: A Critical Review

High-Entropy Alloys: A Critical Review

Effect of Electric Potentials on Microstructure, Corrosion and Wear Characteristic of the Nitrided Layer Prepared on 2Cr13 Stainless Steel by Plasma Nitriding

The Effect of La on the Surface Properties of Plasma Nitrided CoCrCuFeNi High-Entropy Alloys at 440 Degrees Celsius

Contact Info

Product

Resources

About