Rolling Contact Fatigue of Superelastic Intermetallic Materials (SIM) for Use as Resilient Corrosion Resistant Bearings

Corte, Christopher Della; Stanford, Malcolm K.; Jett, Timothy R.

doi:10.1007/s11249-014-0456-3

Cited by 32 publications

(17 citation statements)

References 7 publications

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“…Regardless, coarsening of the Ni 4 Ti 3 phase and nucleation of large micron size Ni 3 Ti precipitates at grain boundaries and within grains are not desirable and likely to lead to a loss in strength, as well as become sources for fatigue, wear failure, and localized corrosion. This is an important issue that needs attention when considering this Ni-rich 60NiTi for bearing and other tribological systems as a promising material for aerospace components and mechanism applications [14,36] .These materials offer a unique combination of properties such as high hardness, low stiffness, corrosion resistance, high tolerance for lubricants, and reduced density not found in other bearing materials. While first proposed for such applications by Buehler [3] nearly five decades ago it was not until very recently with advances in materials processing that it was possible to fabricate aerospace quality balls and other bearing components [37] thus proving out the advantages of these materials.…”

Section: Similar Coarsening Of the Ni 4 Ti 3 Phase Was Also Observed mentioning

confidence: 99%

“…While first proposed for such applications by Buehler [3] nearly five decades ago it was not until very recently with advances in materials processing that it was possible to fabricate aerospace quality balls and other bearing components [37] thus proving out the advantages of these materials. But only now has emphasis focused on understanding the actual deformation and fracture related mechanisms in these alloys [6,14]. The current work is the first detailed attempt to understand the deformation behavior of one of these alloys.…”

Section: Similar Coarsening Of the Ni 4 Ti 3 Phase Was Also Observed mentioning

confidence: 99%

“…Dating back to the 1960s, this specific composition has been investigated as a function of heat treatments/ageing [3][4][5][6], thermomechanical processing of ingot and powder samples [7,8], and occasional theoretical studies [9]. Depending on the specific processing parameters, this alloy can be tailored for actuation purposes [10][11][12][13], tribological applications [14], tools and cutlery [3,15,16], and biomedical surfaces [17], while derivative alloys are being explored in attempts to optimize properties for some of these applications [18].…”

Section: Introductionmentioning

confidence: 99%

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Deformation characteristics of the intermetallic alloy 60NiTi

et al. 2017

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The deformation behavior of a Ni-rich Ni 55 Ti 45 (at.%) alloy, commonly known as 60NiTi (as designated in wt.%), was analyzed using neutron and synchrotron x-ray diffraction during in situ isothermal tension and compression loading, and pre and post-test electron microscopy. The alloy is shown to exhibit remarkable strength and high hardness resulting from a high density of fine Ni 4 Ti 3 precipitates (size ~67 nm), which were uniformly dispersed throughout the matrix after a solution treatment and oil quench. The precipitate volume fraction was 55 ± 3 %, determined from both the neutron Rietveld refinement and conventional x-ray measurements. Non-linear stress-strain behavior was observed in tension (but not in compression) and was attributed to reversible stress-induced martensite (SIM) that forms to accommodate the stress as revealed by neutron diffraction measurements. The tensile and compressive neutron data also showed peak broadening and residual lattice strains. Transmission and scanning electron microscopy revealed stress-induced coarsening of Ni 4 Ti 3 precipitates in both tension and compression tested samples, but precipitation and growth of the stable Ni 3 Ti phase was observed only after tensile testing. Finally, the potential ramifications of these microstructural changes are discussed.

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Section: Similar Coarsening Of the Ni 4 Ti 3 Phase Was Also Observed mentioning

confidence: 99%

Section: Similar Coarsening Of the Ni 4 Ti 3 Phase Was Also Observed mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Deformation characteristics of the intermetallic alloy 60NiTi

et al. 2017

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“…High-hardness, binary nickel titanium (NiTi) of compositions within the range of 54 -56 at.% nickel have attractive attributes for tooling, wear, and other tribological applications that are equal to and even beyond the capabilities of steel and ceramic bearing materials [1][2][3][4][5][6]. Unique features of these alloys include corrosion resistance, cavitation erosion resistance, nonmagnetic behavior and high hardness, while being less dense and more resistant to denting damage compared to tool steels [3,7,8].…”

Section: Introductionmentioning

confidence: 99%

Development of Nickel-Rich Nickel–Titanium–Hafnium Alloys for Tribological Applications

Mills

Noebe

DellaCorte

et al. 2020

Shap. Mem. Superelasticity

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The effects of various heat treatments on the microstructure and hardness of new Ni56Ti41Hf3 and Ni56Ti36Hf8 (atomic %) alloys were studied to evaluate the suitability of these materials for tribological applications. A solid-solution strengthening effect due to Hf atoms was observed for the solution annealed (SA) Ni56Ti36Hf8 alloy (716 HV), resulting in a comparable hardness to the Ni56Ti41Hf3 alloy containing 54 vol.% of Ni4Ti3 precipitates (707 HV). In the Ni56Ti41Hf3 alloy, the maximum hardness (752 HV), achieved after aging at 300°C for 12 h, was attributed to dense, semi-coherent precipitation of the Ni4Ti3 phase. Unlike the lenticular morphology usually observed within binary NiTi alloys, a "blocky" Ni4Ti3 morphology formed within Ni56Ti36Hf3 due to a smaller lattice mismatch in the direction normal to the habit plane at the precipitate/matrix interface. The maximum hardness for Ni56Ti36Hf8 (769 HV) was obtained after applying an intermediate aging step (300°C for 12 h) followed by normal aging (550 °C for 4 h). This two-step aging treatment induces dense nanoscale precipitation of two interspersed

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“…Although bearing steel has been developed for four generations, it is not a process of the new replacing the old, but a development process of gradually enriched varieties and gradual subdivision of the application field [1][2][3]. First-generation bearing steel is mainly composed of high carbon chromium bearing steel and is still the most widely used.…”

Section: Introductionmentioning

confidence: 99%

High Temperature Dry Tribological Behavior of Nb-Microalloyed Bearing Steel 100Cr6

Zhu

Zhang

et al. 2021

Materials

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100Cr6 steel is one of the most widely used bearing steels and a representative of first-generation bearing steel. Many engineering applications require rolling bearings to run at a high temperature. Therefore, it is necessary to improve the high temperature properties of 100Cr6 steel. In this paper, the effect of Nb on high temperature dry tribological behavior, including worn surface and friction coefficient, was analyzed by a wear test when Nb content was 0.018% and 0.040%. The results show that the microstructure is refined gradually, the hardness is improved, and wear volume decreases by 31.8% at most with the increase of Nb content. At 50 °C, the friction coefficient of 100Cr6 steel can be reduced by adding a small amount of Nb, but this effect will be weakened if the content of Nb is too high. In addition, excess Nb increases the hard precipitation of NbC, which aggravates the abrasive wear and leads to the increase in the depth of the worn surface. At 125 °C, the effect of Nb on tribological properties is weaker. With the increase of temperature, the steel substrate softens, and the oxide particles increase, which aggravates the abrasive wear and oxidation wear and makes the wear volume increase significantly.

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Rolling Contact Fatigue of Superelastic Intermetallic Materials (SIM) for Use as Resilient Corrosion Resistant Bearings

Cited by 32 publications

References 7 publications

Deformation characteristics of the intermetallic alloy 60NiTi

Deformation characteristics of the intermetallic alloy 60NiTi

Development of Nickel-Rich Nickel–Titanium–Hafnium Alloys for Tribological Applications

High Temperature Dry Tribological Behavior of Nb-Microalloyed Bearing Steel 100Cr6

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