Volatilization Behavior of β-Type Ti-Mo Alloy Manufactured by Electron Beam Melting

Yao, Kai; Min, Xiaohua; Shi, Shuang; Tan, Yi

doi:10.3390/met8040206

Cited by 12 publications

(6 citation statements)

References 34 publications

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“…The results illustrated that the total content of Mg and Zn decreased after the building process [16]. Recently, Yao et al studied the vaporization behavior of Ti-Mo alloy during EBM, with the results showing that the melting power and the melting time were two critical factors in controlling the vaporization [17].…”

Section: Introductionmentioning

confidence: 98%

Element Vaporization of Ti-6Al-4V Alloy during Selective Laser Melting

Zhang

Chen

Yang

et al. 2020

Metals

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The present study aims to reveal the mechanism of element vaporization of Ti-6Al-4V alloy during selective laser melting (SLM). The equations of Redlich–Kister and the thermodynamics principles were employed to calculate the vaporization thermodynamics, which contributes to the obtaining the vaporization kinetic based on the Chapman-Enskog theory and the diffusion model. According to the achieved vaporization model, the elements with the most prominent tendency and flux to vaporize were distinguished. Moreover, the effect of the process parameters on the vaporization of Al and Ti is experimentally investigated using inductively coupled plasma optical emission spectrometer (ICP) technology. The analyzed results of the chemical composition of the powders and builds show a great agreement with the kinetic results calculated by the vaporization model. Notably, the element vaporization can be curbed by regulating the laser energy input.

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Section: Introductionmentioning

confidence: 98%

Element Vaporization of Ti-6Al-4V Alloy during Selective Laser Melting

Zhang

Chen

Yang

et al. 2020

Metals

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“…The effects of the melting parameters on the microstructures of ingots (two times re-melted) fabricated via electron beam melting technology were investigated in a β-type Ti-Mo binary alloy and it was shown that the microstructures consisted of columnar grains at their top sections and they were similar at different melting powers (from 10.5 kW to 15.0 kW) for a melting time ranging from 10 min to 40 min [29]. The microstructures of Ti-6Al-4V resulting from layered manufacturing using the electron beam process were predominantly characterized by acicular (basket-weave) α for solid structures [36][37][38] or acicular (basket-weave) α and martensite α for mesh and foam structures [37] or at the top of the sample [38].…”

Section: Resultsmentioning

confidence: 99%

“…In the furnaces, a combination of a high vacuum environment and material superheating (up to 1.3-1.5 of the melting temperature), results in a highly efficient refining process. The electron beam method (EBM) is an effective method that has been utilized for refining refractory 2 of 9 metals [24][25][26][27] and alloys [28,29], purifying solar-grade silicon [30,31], obtaining superalloys [18,32,33], high-purity special steels, and so on. We note that the electron beam melting method mentioned in this investigation involves a melting furnace that produces ingots by using an electron beam, which differs from the common adoption for the additive manufacturing method.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electron Beam Method on Processing of Titanium Technogenic Material

Vutova

Vassileva

Stefanova

et al. 2019

Metals

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This study reveals the efficiency of the electron beam processing of titanium technogenic material with a high level of impurities and the quality of the obtained metal in correlation to process parameters which are discussed. The influence of the beam power and melting time on the composition variation, morphologies, hardness of metal samples and mass losses is investigated. Based on the different technological parameters, the removal efficiency of impurities is also discussed, and the corresponding experiments are carried out in order to make a comparison. Different thermal process conditions are realized during the single-melt operation. Chemical and metallographic analyses are performed, and the results are discussed. The hardness of the titanium decreases by prolonging the time of the electron beam processing. A maximal overall removal efficiency of 99.975% is seen at 5.5 kW beam power for a 40 min melting time and the best purification of Ti (99.996%) is achieved.

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“…A number of theoretical and experimental models for determining the activity of components in binary systems are known in the literature [28][29][30]. To determine the Co, Cr and Mo activity in the alloy this study uses the methodology based on two-component diagrams and is presented in [28].…”

Section: Thermodynamic Conditions Of Element Volatilization During El...mentioning

confidence: 99%

Recycling of Technogenic CoCrMo Alloy by Electron Beam Melting

et al. 2022

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In the current work, the possibility of the recycling of technogenic CoCrMo material by electron beam melting is investigated. The influence of thermodynamic and kinetic parameters (temperature and melting time) on the behavior of the main components of the alloy (Co, Cr, and Mo) and other elements (Fe, Mn, Si, W, and Nb) present in it, and on the microstructure of the ingots obtained after e-beam processing is studied. The vapor pressure of the alloy is determined taking into account the activities of the main alloy components (Co, Cr, and Mo). The relative volatility of the metal elements present in the alloy was also evaluated. An assessment of the influence of the temperature and the retention time on the degree of elements removal from CoCrMo technogenic material was made. The results obtained show that the highest degree of refining is achieved at 1860 K and a residence time of 20 min. The conducted EDS analysis of the more characteristic phases observed on the SEM images of the samples shows distinct micro-segregation in the matrix composition.

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Volatilization Behavior of β-Type Ti-Mo Alloy Manufactured by Electron Beam Melting

Cited by 12 publications

References 34 publications

Element Vaporization of Ti-6Al-4V Alloy during Selective Laser Melting

Element Vaporization of Ti-6Al-4V Alloy during Selective Laser Melting

Effect of Electron Beam Method on Processing of Titanium Technogenic Material

Recycling of Technogenic CoCrMo Alloy by Electron Beam Melting

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