Sintering Behavior of Porous Titanium Fiber Materials

Liu, Shifeng; Xl, Zheng-ping; Tang, Huiping; Yang, Xin; Zhang, Zhaohui; Quan-ming, Liu

doi:10.1016/s1006-706x(14)60152-7

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…As observed in Table 1, the SLS-built PA2200 polyamide samples exhibit different compressive strength and surface roughness values. The compressive yield strength and the maximum compressive strength were found to vary in between 22-34 MPa and 59-70 MPa, respectively, which agrees well with previous results [1,14,15]. The difference of nearly 10-12 MPa in the compressive strength is quite significant and it can be attributed to the change in densification between the sintered samples.…”

Section: Resultssupporting

confidence: 90%

Estimation of the compression strength and surface roughness of the as-built SLS components using weibull distribution

Khan¹

2021

J Adv Manuf Eng

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Selective laser sintering (SLS) is a process of fabrication of three-dimensional structures by fus- ing powder particles using a guided laser source. The uncertainty in the mechanical properties of the SLS parts fabricated at the same time and with the same process parameters can affect the repeatability of the SLS process. A vast difference in the mechanical properties of the concurrently processed parts can lower the production quality of the batch. Therefore, the param- eters are required to be design based on the most probable outcome of the desired properties. Weibull distribution is one such statistical-based probability distribution method to measure the likelihood of the occurrence of a value of any random variable falling within a particular range of values. Here, the Weibull distribution was used to measure the relative likelihood (90% probability) of the surface roughness and the compressive strength values of the SLS-built polyamide PA2200 components in the given sample space that was obtained from 20 random samples. The results show that the variance in the surface roughness (scan and built plane) and the compressive strength values were in the range of 6–7 μm and around 10 MPa, respectively. Moreover, the surface roughness of the two orthogonal planes with 90% reliability was measured at 14.81 μm (scan plane) and 12.15 μm (built plane). Similarly, the yield strength and the compressive strength with 90% reliability were found 25.87 MPa and 62.64 MPa, respectively.

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Section: Resultssupporting

confidence: 90%

Estimation of the compression strength and surface roughness of the as-built SLS components using weibull distribution

Khan¹

2021

J Adv Manuf Eng

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“…Comparing the grain sizes at three different temperatures, we found that at higher sintering temperatures, the grain nucleation was higher, and the size was relatively uniform but was also larger at higher temperatures. Between 800 °C and 900 °C, the grain size on the fiber was significantly smaller than that on the powder, which was also smaller than the grain size (90–160 μm) of the porous material of titanium fiber prepared by our team [32]. In the process of grain growth, the effect of crystal defects on grain growth generally serves two purposes: one is to increase the internal stored energy of the material, which provides driving force for recovery and recrystallization; the other is that the defect will aggregate at the grain boundary, hindering migration and growth of grain boundary.…”

Section: Resultsmentioning

confidence: 87%

Preparation and Properties of Titanium Obtained by Spark Plasma Sintering of a Ti Powder–Fiber Mixture

et al. 2018

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Porous titanium is a functional structural material with certain porosity, which is prepared from titanium powder and titanium fiber. In order to study the porosity, phase structure, microstructure, sintering mechanism and mechanical properties of porous titanium obtained by spark plasma sintering of a Ti powder–fiber mixture at different sintering temperatures, a spherical titanium powder (D50 of 160 μm) was prepared via plasma rotating electrode processing, and titanium fiber (average wire diameter of fiber of 110 μm) was prepared by drawing, and they were mixed as raw materials according to different mass ratios. Porous titanium with a fiber–powder composite porous structure was prepared by spark plasma sintering at sintering temperatures of 800 °C, 900 °C and 1000 °C under a sintering pressure of 20 MPa. The results showed that there were no new phases occurring in porous titanium with porosity of 1.24–24.6% after sintering. Titanium fiber and titanium powder were sintered using powder/powder, powder/fiber and fiber/fiber regimes to form composite pore structures. The mass transfer mechanism of the sintered neck was a diffusion-dominated material migration mechanism during sintering. At higher sintering temperatures, the grain size was larger, and the fiber (800 °C; 10–20 μm) was finer than the powder (800 °C; 10–92 μm). The stress–strain curve of porous titanium showed no obvious yield point, and the compressive strength was higher at higher sintering temperatures. The results of this paper can provide data reference for the preparation of porous titanium obtained by spark plasma sintering of a Ti powder–fiber mixture.

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“…retrofitted the rotation wheel by metal stripping machine, and the power source was replaced by grinder motor, as shown in figure 9(c). Furthermore, the cold-drawing steel wire [73,74], Manganese steel wire [75], Titanium fiber [76], and Copper wire [77] are also adopted for porous metallic material fabrication. Under the mixed mode, which includes liquid state process for precursor shaping and solid state process for porous structure sintering, the material selection is expanded, and the raw material investment is reduced significantly.…”

Section: Mixed-mode Processmentioning

confidence: 99%

The development of porous metallic materials: a short review of fabrication, characteristics, and applications

Li-Yin,

Hao-Kun,

Xuan

et al. 2023

Phys. Scr.

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Metallic porous material plays an irreplaceable role in weight reduction, heat dissipation, catalyst, and other industrial applications. The customized, large production and environment-friendly fabrication of porous metallic material are becoming increasingly important. Moreover, the selection of matrix material, control of porosity, and foaming parameters are critical for determining the quality of porous metallic material and product. As the porous metallic material is often used as the structural and/or functional component, its mechanical, heat dissipation, corrosion resistance and other properties need to be evaluated before industrial application. This review provides an overview of the fabrication techniques, characteristics, and applications of porous metallic materials. Additionally, current industrial applications and potential future areas are discussed.

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Sintering Behavior of Porous Titanium Fiber Materials

Cited by 7 publications

References 10 publications

Estimation of the compression strength and surface roughness of the as-built SLS components using weibull distribution

Estimation of the compression strength and surface roughness of the as-built SLS components using weibull distribution

Preparation and Properties of Titanium Obtained by Spark Plasma Sintering of a Ti Powder–Fiber Mixture

The development of porous metallic materials: a short review of fabrication, characteristics, and applications

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