Effect of Martensitic Transformation on Elastic Modulus Anisotropy of Ti-6Al-4V Alloy

Feng, Zhongxue; Yang, Yunfeng; Xu, Zhichao; Shi, Qi

doi:10.1590/1980-5373-mr-2018-0197

Cited by 15 publications

(1 citation statement)

References 17 publications

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“…This analysis was performed to differentiate the fracturing behavior of the selected samples. SEM imaging was employed by many researchers to analyze fracture behavior after tensile tests [44][45][46]. Based on the appeared surface morphology, the PEVA nanocomposites (PEVA-S and PEVA-B) and PEVA-DCN nanocomposites (PEVA-S 4 B 1 , PEVA-S 3 B 2 , PEVA-S 2 B 3 , and PEVA-S 1 B 4 ) samples exhibited more ductile fracture, showing longer fibrous surface morphology in comparison with the neat PEVA.…”

Section: Analyzing Tensile Fractured Surface By Semmentioning

confidence: 99%

Biomedical PEVA Nanocomposite with Dual Clay Nanofiller: Cytotoxicity, Mechanical Properties, and Biostability

et al. 2021

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Poly(ethylene-vinyl acetate) (PEVA) nanocomposite incorporating dual clay nanofiller (DCN) of surface modified montmorillonite (S-MMT) and bentonite (Bent) was studied for biomedical applications. In order to overcome agglomeration of the DCN, the S-MMT and Bent were subjected to a physical treatment prior to being mixed with the copolymer to form nanocomposite material. The S-MMT and Bent were physically treated to become S-MMT(P) and Bent(pH-s), respectively, that could be more readily dispersed in the copolymer matrix due to increments in their basal spacing and loosening of their tactoid structure. The biocompatibility of both nanofillers was assessed through a fibroblast cell cytotoxicity assay. The mechanical properties of the neat PEVA, PEVA nanocomposites, and PEVA-DCN nanocomposites were evaluated using a tensile test for determining the best S-MMT(P):Bent(pH-s) ratio. The results were supported by morphological studies by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Biostability evaluation of the samples was conducted by comparing the ambient tensile test data with the in vitro tensile test data (after being immersed in simulated body fluid at 37 °C for 3 months). The results were supported by surface degradation analysis. Our results indicate that the cytotoxicity level of both nanofillers reduced upon the physical treatment process, making them safe to be used in low concentration as dual nanofillers in the PEVA-DCN nanocomposite. The results of tensile testing, SEM, and TEM proved that the ratio of 4:1 (S-MMT(P):Bent(pH-s)) provides a greater enhancement in the mechanical properties of the PEVA matrix. The biostability assessment indicated that the PEVA-DCN nanocomposite can achieve much better retention in tensile strength after being subjected to the simulated physiological fluid for 3 months with less surface degradation effect. These findings signify the potential of the S-MMT(P)/Bent(pH-s) as a reinforcing DCN, with simultaneous function as biostabilizing agent to the PEVA copolymer for implant application.

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Section: Analyzing Tensile Fractured Surface By Semmentioning

confidence: 99%

Biomedical PEVA Nanocomposite with Dual Clay Nanofiller: Cytotoxicity, Mechanical Properties, and Biostability

et al. 2021

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The influence of a large build area on the microstructure and mechanical properties of PBF-LB Ti-6Al-4 V alloy

Bagasol

Kaschel

Ramachandran

et al. 2023

Int J Adv Manuf Technol

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This study investigated the print homogeneity of Ti-6Al-4 V alloy parts, when printed over a large build area of 250 $$\times$$ × 250 $$\times$$ × 170 mm3, using a production scale laser powder bed additive manufacturing system. The effect of part location across this large build area was investigated based on printed part porosity, microstructure, hardness, and tensile properties. In addition, a Hot Isostatic Pressing (HIP) treatment was carried out on the as-built parts, to evaluate its impact on the material properties. A small increase in part porosity from 0.01 to 0.09%, was observed with increasing distance from the argon gas flow inlet, which was located on one side of the build plate, during printing. This effect, which was found to be independent of height from the build plate, is likely to be associated with enhanced levels of condensate or spatter residue, being deposited at distances, further from the gas flow. Despite small differences in porosity, no significant differences were obtained for microstructural features such as prior β grain, $$\alpha$$ α lath thickness, and phase fraction, over the entire build area. Due to this, mechanical performances such as hardness and tensile strengths were also found to be homogenous across the build area. Additionally, it was also observed based on the lattice constants that partial in-situ decomposition of $${\alpha }^{^{\prime}}\to \alpha +\beta$$ α ′ → α + β phases occurred during printing. Post HIP treatment result showed a decrease of 7 and 6%, in the yield strength (YS) and ultimate tensile strength (UTS), respectively, which was associated with a coarsening of $$\alpha$$ α lath widths. The potential of the laser powder bed system for large area printing was successfully demonstrated based on the homogenous microstructure and mechanical properties of the Ti-6Al-4 V alloy parts.

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Effect of solutionizing and quenching treatment on Ti6Al4V alloy: a study on wear, cavitation erosion and corrosion resistance

2023

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Effect of Martensitic Transformation on Elastic Modulus Anisotropy of Ti-6Al-4V Alloy

Cited by 15 publications

References 17 publications

Biomedical PEVA Nanocomposite with Dual Clay Nanofiller: Cytotoxicity, Mechanical Properties, and Biostability

Biomedical PEVA Nanocomposite with Dual Clay Nanofiller: Cytotoxicity, Mechanical Properties, and Biostability

The influence of a large build area on the microstructure and mechanical properties of PBF-LB Ti-6Al-4 V alloy

Effect of solutionizing and quenching treatment on Ti6Al4V alloy: a study on wear, cavitation erosion and corrosion resistance

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