Microstructure and dry sliding wear resistance of Moss-toughened Mo2Ni3Si metal silicide alloys

Gui, Yunwei; Wang, H.M.

doi:10.1016/j.ijrmhm.2006.11.001

Cited by 13 publications

(8 citation statements)

References 19 publications

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“…4b), although some micro-cracks are found in the intermetallic matrix during the wear process. Such a phenomenon was also observed in Mo ss -toughened Mo 2 Ni 3 Si 19) and .5B (at.%) alloys. 20) In order to assist to explore the materials removal mechanisms of novel Mo-Ni-Si intermetallic composite, wear debris was collected and examined.…”

Section: Resultssupporting

confidence: 58%

“…The Mo ss phase in Mo ss /Mo 2 Ni 3 Si composite fabricated by laser melting and deposition technique was previously measured, having a hardness of 620 HV. 19) Because of the unique microstructure as described above, the novel Mo-Ni-Si intermetallic composite exhibits excellent wear resistance under the dry sliding wear conditions at room temperature. Figure 3 shows that the wear mass loss of the intermetallic composite is considerably lower than the two reference materials under all the designed test loads.…”

Section: Resultsmentioning

confidence: 97%

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Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

et al. 2016

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It has been a challenge to improve the toughness of intermetallic compound at low and medium temperatures for developing wear resistance materials. The refractory metals, with a high melting point, strong atomic bonds, high ductility and toughness, are ideal toughening phases for intermetallic composites. This paper presents a novel composite having the microstructure of ductile Mo primary dendrites, binary intermetallic compound NiMo and ternary metallic silicide Mo 2 Ni 3 Si. The composite exhibits outstanding wear resistance and pretty low wear-load coef cient at ambient temperature, which are attributed to the contribution of refractory metal Mo to toughness of intermetallic matrix, in addition to the high strength and hardness of binary NiMo and ternary Mo 2 Ni 3 Si intermetallic phases. The wear mechanism analyzed by examining the worn surface and debris morphologies is in terms of soft abrasive wear.

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Section: Resultssupporting

confidence: 58%

Section: Resultsmentioning

confidence: 97%

Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

et al. 2016

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“…Gui et al studied the tribological properties of NiMo/Mo 2 Ni 3 Si intermetallic composites under dry sliding wear test conditions at room temperature, and found that the wear mass losses and the friction coefficients of the composite were considerably lower than those of the comparison test materials, the austenitic stainless steel 1Cr18Ni9Ti, and hardened 0.45%C steel [16]. Wang et al observed that Moss-toughened Mo 2 Ni 3 Si alloys exhibited excellent wear resistance and low friction coefficient under dry sliding conditions [17]. Especially under high load, the wear resistance of the alloy was 10 times more than that of hardened 0.45%C steel.…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear Properties of Ni3Si Alloy with Ti Addition at High Temperatures

Niu

Bao

et al. 2020

Materials

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The tribological properties of Ni3Si alloy were studied at high temperatures. The effect of the addition of Ti was also analyzed. The surface composition was analyzed by Raman spectroscopy. The results showed that the friction coefficient decreased with the increasing temperature, and the wear rate changed slightly from 25 to 400 °C. However, the wear resistance of the alloys decreased sharply at 600 °C, and this was due to the decrease of the high-temperature strength and the severe oxidation of the alloys. Although the oxidation resistance of Ni3Si alloy decreased with Ti addition, the tribological property was improved by the addition of Ti. The Ni3Si alloy with 5% Ti addition had the best wear resistance at high temperatures as compared to pure Ni3Si alloy and with 10% Ti addition, and the wear rates of the alloys were in the order of magnitude of 10−5 mm3/Nm. With the increase of temperature, the wear mechanism of pure Ni3Si alloy transformed from abrasive wear to oxidation wear. As the Ti content increased, the wear mechanisms of the alloys changed from abrasive wear to fatigue wear at low temperature, and oxidation wear and fatigue wear at high temperature.

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“…It is difficult to accurately identify the hardness of ductile Mo phase because of its fine size in the Mo–40Ni–13Si alloy. In our previous work [29], the hardness value of Mo SS in composites fabricated by laser melting and deposition rout was approximately HV620.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and Tribological Properties of Mo–40Ni–13Si Multiphase Intermetallic Alloy

et al. 2016

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Intermetallic compounds are increasingly being expected to be utilized in tribological environments, but to date their implementation is hindered by insufficient ductility at low and medium temperatures. This paper presents a novel multiphase intermetallic alloy with the chemical composition of Mo–40Ni–13Si (at %). Microstructure characterization reveals that a certain amount of ductile Mo phases formed during the solidification process of a ternary Mo–Ni–Si molten alloy, which is beneficial to the improvement of ductility of intermetallic alloys. Tribological properties of the designed alloy—including wear resistance, friction coefficient, and metallic tribological compatibility—were evaluated under dry sliding wear test conditions at room temperature. Results suggest that the multiphase alloy possesses an excellent tribological property, which is attributed to unique microstructural features and thereby a good combination in hardness and ductility. The corresponding wear mechanism is explained by observing the worn surface, subsurface, and wear debris of the alloy, which was found to be soft abrasive wear.

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Microstructure and dry sliding wear resistance of Moss-toughened Mo2Ni3Si metal silicide alloys

Cited by 13 publications

References 19 publications

Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

Friction and Wear Properties of Ni3Si Alloy with Ti Addition at High Temperatures

Microstructure and Tribological Properties of Mo–40Ni–13Si Multiphase Intermetallic Alloy

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