Cross-sectional analysis of the graded microstructure and residual stress distribution in a TiNi alloy treated with low energy high-current pulsed electron beam

Meisner, L. L.; Semin, V.O.; Mironov, Yu. P.; Meisner, S. N.; D'yachenko, F.A.

doi:10.1016/j.mtcomm.2018.08.018

Cited by 30 publications

(7 citation statements)

References 50 publications

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“…It is seen that with an increase in the energy of the electron beam impact, the volume fraction of the main TiNi phase increases while the volume fraction of secondary phases decreases. This finding is consistent with the work of several other teams [47][48][49]. During electron-beam treatment, desorption of light elements (O, C) from the surface and secondary recrystallization to a depth of up to 20 µm occur.…”

Section: Composition Of Obtained Materialssupporting

confidence: 92%

Combined Porous-Monolith TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses

Shabalina¹,

Аникеев²,

Kulinich³

et al. 2023

Preprint

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TiNi alloys are very widely used materials for implant fabrication. When applied as rib replacement, they are required to be manufactured as combined porous-monolithic structure, ideally with a thin porous part well-adhered to its monolithic substrate. Additionally, good biocompatibility, high corrosion resistance and mechanical durability are also highly demanded. So far, all these parameters were not achieved in one material, which is why active search in the field is still underway. In the present work, we prepared new porous-monolithic TiNi materials by sintering a TiNi powder (0-100 µm) on monolithic TiNi plates followed by surface modification with high-current pulsed electron beam. The obtained materials were evaluated by a set of surface and phase analysis methods, after which their corrosion resistance and biocompatibility (hemolysis, cytotoxicity, and cell viability) were evaluated. Finally, cell growth tests were conducted. In comparison with flat TiNi monolith, the newly-developed materials were found to have better corrosion resistance, also demonstrating good biocompatibility and potential for cell growth on their surface. Thus, the newly-developed porous-on-monolith TiNi materials with different surface porosity and morphology show promise as potential new-generation implants for rib endoprostheses.

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Section: Composition Of Obtained Materialssupporting

confidence: 92%

Combined Porous-Monolith TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses

Shabalina¹,

Аникеев²,

Kulinich³

et al. 2023

Preprint

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“…Each single individual grain is clearly visible and the grains resulted in an uneven surface. Previous studies demonstrated that the surface morphology was due to the anisotropy of the thermal stress during irradiation, which resulted in the deformation of grains with different orientations [22,24]. The surface morphology at a higher magnification is shown in Figure 5b.…”

Section: Surface Topographymentioning

confidence: 83%

Surface Alloying and Improved Property of Nb on TC4 Induced by High Current Pulsed Electron Beam

Tian

Zhang

et al. 2021

Nanomaterials

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In this paper, an Nb alloying layer on a TC4 alloy was fabricated by using high-current pulsed electron beam (HCPEB) irradiation to improve surface performance. X-ray diffraction (XRD), optical microscopy (OM), laser surface microscope (LSM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the phase composition and microstructure of the surface layer. The microhardness, wear tests and corrosion resistance were also examined. The results show that after HCPEB alloying, a Nb-alloyed layer was formed with about 3.6 μm in thickness on the surface of the sample, which was mainly composed of α’-Ti martensite, β-Ti equiaxial crystals, and NbTi4 particles. After HCPEB irradiation, the surface hardness, wear resistance and corrosion resistance of Nb alloying layer on TC4 alloy were improved compared to the initial samples.

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“…The rapid heating and solidification effects excited by HCPEB can produce metastable structures in the modified surface layer, which exhibits superior properties not obtainable using other conventional methods. These structures have been of significant research interest, thus leading to numerous investigations into HCPEB-treated metals, including steel materials [7,8], Al alloys [9,10], Mg alloys [11,12], Ti alloys [13,14], Zr alloys [15,16], Cu alloys [17], and hard alloys [18,19]. For example, Fu et al [7] discovered the formation of an amorphous phase on the surface of HCPEB-irradiated AISI 1045 steel and concluded that the amorphous phase could be used as a homogeneous passive film to significantly improve the anticorrosion properties of the material.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cerium and Magnesium on Surface Microcracks of Al–20Si Alloys Induced by High-Current Pulsed Electron Beam

Gao

et al. 2022

Coatings

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The effect of Ce and Mg on surface microcracks of Al–20Si alloys induced via high-current pulsed electron beam (HCPEB) was studied. Mg was revealed to refine the primary Si phase in the pristine microstructure by forming a Mg2Si phase, leading to the suppression of microcrack propagation within the brittle phase after HCPEB irradiation. The incorporation of Ce into the Al–Si–Mg alloys further refined the primary Si phase and reduced the local stress concentration in the brittle phase induced by HCPEB irradiation. Ultimately, the surface microcracks were observed to be eliminated by the synergistic effects between the two elements. For Al–20Si–5Mg–0.7Ce alloys, Ce demonstrated a homogeneous distribution in the Al matrix on the HCPEB-irradiated alloy surface, while the Mg and Si exhibited a certain degree of aggregation in the Mg2Si phase. Metastable structures were formed on the HCPEB-irradiated alloy surface, including the nano-primary silicon phase, nano-cellular aluminium structure, and nano-Mg2Si phase. Compared with alloy specimens containing Mg, the Al–20Si–5Mg–0.7Ce alloy specimens exhibited an excellent anticorrosion property after HCPEB irradiation mainly due to the combined effects of the grain refinement and microcrack elimination.

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Cross-sectional analysis of the graded microstructure and residual stress distribution in a TiNi alloy treated with low energy high-current pulsed electron beam

Cited by 30 publications

References 50 publications

Combined Porous-Monolith TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses

Combined Porous-Monolith TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses

Surface Alloying and Improved Property of Nb on TC4 Induced by High Current Pulsed Electron Beam

Effect of Cerium and Magnesium on Surface Microcracks of Al–20Si Alloys Induced by High-Current Pulsed Electron Beam

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