Effect of Al addition on the microstructure, mechanical and wear properties of TiZrNbHf refractory high entropy alloys

Bhardwaj, Vipul; Zhou, Qin; Zhang, Fan; Han, Weichao; Du, Yin; Hua, Ke; Wang, Haifeng

doi:10.1016/j.triboint.2021.107031

Cited by 156 publications

(18 citation statements)

References 63 publications

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“…In addition, the SEM‐EDS results in Table 4 revealed that the Si content of worn surfaces of the two steels was obviously lower than the average Si content of steels (approximately 0.28 wt%), indicating that there was no material transfer from the Si 3 N 4 ceramic ball to the worn surfaces. [ 52 ] Therefore, no adhesive wear occurred.…”

Section: Resultsmentioning

confidence: 99%

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

Jiao

Feng

et al. 2023

steel research int.

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Herein, a novel high‐nitrogen (0.18 wt%) M42 high‐speed steel is fabricated by pressurized metallurgy. The high‐temperature softening resistance of N‐free and 0.18N steels is evaluated by hardness measurement at room temperature after additional heating at 600 °C for various times, and the high‐temperature wear resistance is evaluated by ball‐on‐disk dry sliding wear test at 600 °C. The microstructure is characterized by scanning electron microscopy (SEM), X‐ray diffraction (XRD), and high‐resolution transmission electron microscope (HRTEM). The results indicate that the hardness of 0.18N steel is 2–3 HRC higher than that of N‐free steel after additional heating at 600 °C for 4–120 h. The superior high‐temperature softening resistance of 0.18N steel is primarily ascribed to the smaller coarsening rate of M2C secondary carbides. Under the dry sliding condition at 600 °C, the wear rate of N‐free steel is approximately 1.5 times higher than that of 0.18N steel. The better high‐temperature wear resistance of 0.18N steel is primarily because the superior softening resistance makes it maintain higher hardness during the wear process to provide stronger support for the oxide layer and increase the protective ability of oxide layer to steel.

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Section: Resultsmentioning

confidence: 99%

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

Jiao

Feng

et al. 2023

steel research int.

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“…The reason why the addition of Al can enhance the wear resistance is because Al improves the mechanical properties of the material. Furthermore, an oxide film with higher friction resistance grows on the surface of AlTiZrNbHf due to the Al element, which is found without any elemental separation in the friction track in EDS analysis ( Bhardwaj et al, 2021 ).…”

Section: Biocompatibility Properties Of Bio-heasmentioning

confidence: 99%

Medical high-entropy alloy: Outstanding mechanical properties and superb biological compatibility

Liu

Yang²,

Liu³

et al. 2022

Front. Bioeng. Biotechnol.

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Medical metal implants are required to have excellent mechanical properties and high biocompatibility to handle the complex human environment, which is a challenge that has always existed for traditional medical metal materials. Compared to traditional medical alloys, high entropy alloys (HEAs) have a higher design freedom to allow them to carry more medical abilities to suit the human service environment, such as low elastic modulus, high biocompatible elements, potential shape memory capability. In recent years, many studies have pointed out that bio-HEAs, as an emerging medical alloy, has reached or even surpassed traditional medical alloys in various medical properties. In this review, we summarized the recent reports on novel bio-HEAs for medical implants and divide them into two groups according the properties, namely mechanical properties and biocompatibility. These new bio-HEAs are considered hallmarks of a historic shift representative of a new medical revolution.

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“…HEAs can easily exhibit a microstructure in a large compositional space. Controlling the microstructure improves the mechanical or magnetic properties [17,18]. Materials research on HEAs showing novel phenomena [19,20] by utilizing the large compositional space is also attractive and carried out worldwide.…”

Section: Introductionmentioning

confidence: 99%

Superconductivity and hardness of the equiatomic high-entropy alloy HfMoNbTiZr

Kitagawa¹,

Hoshi²,

Kawasaki³

et al. 2022

Preprint

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Effect of Al addition on the microstructure, mechanical and wear properties of TiZrNbHf refractory high entropy alloys

Cited by 156 publications

References 63 publications

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

Medical high-entropy alloy: Outstanding mechanical properties and superb biological compatibility

Superconductivity and hardness of the equiatomic high-entropy alloy HfMoNbTiZr

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