Morphological Characteristics of Dimples of Ductile Fracture of VT23M Titanium Alloy and Identification of Dimples on Fractograms of Different Scale

Konovalenko, І. V.; Maruschak, Pavlo; Brezinová, Janette; Brezina, Jozef

doi:10.3390/ma12132051

Cited by 38 publications

(13 citation statements)

References 31 publications

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“…Figures 6(C)-(F) depicts the fractographs of tensile tested samples of Mg, MgZn, MgCe, and MgZnCe. The appearance of dimples in all the systems confirms ductile fracture behavior [46]. Corrosion potential (E corr ) and corrosion current density (I corr ) values of each material system were calculated using the Tafel extrapolation method, as tabulated in table 4.…”

Section: Mechanical Propertiesmentioning

confidence: 81%

Zinc and cerium synergistically enhance the mechanical properties, corrosion resistance, and osteogenic activity of magnesium as resorbable biomaterials

et al. 2021

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Magnesium and its alloys have the potential to serve as a revolutionary class of biodegradable materials, specifically in the field of degradable implants for orthopedics. However, the corrosion rate of commercially pure magnesium is high and does not match the rate of regeneration of bone tissues. In this work, magnesium alloys containing zinc and cerium, either alone or in combination, were investigated and compared with commercially-pure magnesium as biomaterials. The microstructure, mechanical properties, corrosion resistance, and response of osteoblasts in vitro were systematically assessed. Results reveal that alloying with Ce results in grain refinement and weakening of texture. The tensile test revealed that the ternary alloy offered the best combination of elastic modulus (41.1 ± 0.5 GPa), tensile strength (234.5 ± 4.5 MPa), and elongation to break (17.1 ± 0.4%). The ternary alloy was also the most resistant to corrosion (current of 0.85 ± 0.05 × 10−4 A cm−2) in simulated body fluid than the other alloys. The response of MC3T3-E1 cells in vitro revealed that the ternary alloy imparts minimal cytotoxicity. Interestingly, the ternary alloy was highly efficient in supporting osteogenic differentiation, as revealed by the expression of alkaline phosphatase and calcium deposition. In summary, the extruded Mg alloy containing both Zn and Ce exhibits a combination of mechanical properties, corrosion resistance, and cell response that is highly attractive for engineering biodegradable orthopedic implants.

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Section: Mechanical Propertiesmentioning

confidence: 81%

Zinc and cerium synergistically enhance the mechanical properties, corrosion resistance, and osteogenic activity of magnesium as resorbable biomaterials

et al. 2021

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“…Figures 13(A 1 )-(D 1 ) and (A 2 ) (above the red line) show clear stepped cleavage planes on the fracture surface of all remelted zones, revealing the typical characteristic of brittle fracture [44][45][46]. In these remelted zones, the microstructures are dominated by dendrites with refined size.…”

Section: Effect Of the Laser Remelting On The Mechanical Behaviourmentioning

confidence: 93%

Laser remelting of AISI H13 tool steel: influence of cooling rate on the surface properties

Xie

Raoelison²,

Di³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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Laser surface remelting is an effective and suitable process to extend the longevity of components without additional materials. In this paper, a high energy density laser with a large size was used to improve the hardness of H13 tool steel. A predictive numerical multiphysics coupled model was established to investigate the temperature field and the profile of the molten pool. The effect of laser scanning speeds is investigated in terms of heat-affected depth, surface topography, and mechanical properties. In detail, the simulated temperature gradients with laser scanning speed in a range of 12 to 24 mm/s are ~8.4×105 K/m, involving a cooling rate less than 1×104 K/s can prevent cracking. The hardness of the remelted zone is in the range of 700-850 HV0.2, and the tensile performances are also recorded. The model in this work could not only link the mechanical properties with process parameters together, but also guide the actual experiment or processing bypassing the trial-and-error method, as well as extend to other materials and laser additive manufacturing.

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“…The physical process of ductile fracture of specimens UT, HT, and CT is mostly recognized to be based on a sequence relating to void nucleation, void growth, and void coalescence importunately to micro crack formation. The process of ductile fracture comprising void nucleation and growth are principally influenced by the type of dislocation and dislocation interactions which are mainly administrated by the state of strain hardening of the dissimilar weld during the weld heating and cooling of HAZ [ 30 ]. For better understanding of this phenomena, the entire range of dimples has to be analyzed for size and density distribution.…”

Section: Tensile Test Digital Image Correlation Fractography Anmentioning

confidence: 99%

Digital Image Correlation of Tensile Properties for Monel 400/SS 316L Dissimilar Metal Welding Joints

et al. 2021

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Dissimilar metal weld joints of Monel 400 and Stainless Steel 316L stainless steel were carried out using Gas Tungsten Arc Welding (GTAW). Conventional annealing and cryogenic treatment were performed on the welded joints. Weld joints of this combination of materials have enormous potential applications in power industry and the available related literature is limited. In the present study, the tensile properties of heat treated (HT), cryotreated (CT), and untreated (UT) specimens were studied. The engineering stress and strain were determined experimentally as per Standard Test Methods for Tension Testing of Metallic Materials (ASTM E8). The strain distribution was evaluated at different zones of weld joint was evaluated using Digital Image Correlation (DIC). Significant difference was noticed between the zones. Weld zone of all samples had less local stress and strain and SS 316L heat affected zone (HAZ) zone had more local stress and strain when compared to other zones. The local strain distribution along distance from weld center line and local stress-strain curves of different zones are also predicted. Scanning Electron Microscopy was used to analyze the fracture behavior of welded samples for HT, CT, and UT specimens.

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Morphological Characteristics of Dimples of Ductile Fracture of VT23M Titanium Alloy and Identification of Dimples on Fractograms of Different Scale

Cited by 38 publications

References 31 publications

Zinc and cerium synergistically enhance the mechanical properties, corrosion resistance, and osteogenic activity of magnesium as resorbable biomaterials

Zinc and cerium synergistically enhance the mechanical properties, corrosion resistance, and osteogenic activity of magnesium as resorbable biomaterials

Laser remelting of AISI H13 tool steel: influence of cooling rate on the surface properties

Digital Image Correlation of Tensile Properties for Monel 400/SS 316L Dissimilar Metal Welding Joints

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