The TiH 2 and 60Al40V master alloy powders (provided by Tian Tai Long Metal Materials Co., Ltd, China) with a particle size of 5–55 µm and irregular shapes were used as raw materials. The chemical compositions of raw powders are shown in Table 1.The Ti-6Al-4V alloy powders were prepared by mechanical blending in a double-roller …
The commercial Ti-6Al-4V powder, produced with an argon atomization method, was used for manufacturing the above mentioned square box structures. It was delivered by TLS Technik GmBH and Co (Bitterfeld-Wolfen, Germany) and the size of the particles was in the range of 44 to 105 μm.
2.1. Materials. The Ti-6Al-4V-xO alloys used in this paper were obtained through vacuum arc melting and forging.By controlling the addition of titanium oxide (TiO 2) during the melting process, Ti-6Al-4V alloys with different oxygen contents can be obtained.More precisely, considering that there may be a 0.03% increase in oxygen content during the …
Titanium 6-4, also known as Ti-6Al-4V alloy, is an alpha-beta titanium alloy in which aluminum acts as the alpha stabilizer and vanadium acts as the beta stabilizer. Ti-6Al-4V composition is 5.5–6.75% aluminum and 3.5–4.5% vanadium, with the remaining percentage being titanium. Titanium alloy 6-4 offers a great blend of high strength and ...
The FSW on a Ti-6Al-4V was carried out with the use of argon blow shielding against oxidizing the seam metal. Argon was supplied via an inlet directly to the welding zone, as shown in Figure 1 . Titanium alloy sheets with 2.5 mm thickness were secured on an AISI 304 stainless steel substrate using special clamps.
The presence of retained β phase between the α phase platelets in Ti–6Al–4V introduces an added level of complexity relative to CP titanium, enabling the interaction of deformation twinning across α boundaries with retained β phase to be evaluated. Preliminary analysis of the equiaxed forging material was also able to identify …
Comparison analysis of titanium alloy Ti6Al4V produced by metallurgical and 3D printing method Karolina Karolewska; ... The effect of post-sintering treatments …
The machining outputs are explained based on different aspects of chip formation mechanism and practical issues faced by industries during titanium …
Ti6Al4V titanium alloys are widely used in a variety of scientific and industrial fields. Laser beam welding is one of the most effective techniques for the joining of titanium plates. The main objective of this study was to investigate the influence of the most important laser parameters on welding performance of titanium alloy in two different …
2. Materials and Methods. Titanium alloy, Ti–6Al–4V, is commonly machined using flood cooling. In cryogenic machining, LN 2 at −197 °C is sprayed into the cutting zone. This would change the temperature of both cemented tungsten carbide cutting tool and the Ti–6Al–4V workpiece material.
The material studied in this article was an α + β titanium alloy Ti-6Al-4V. The LDM 8060 (Raycham, Nanjing, China) machine was used to manufacture all LMDed samples. Ti-6Al-4V powder with a particle size of 100–200 μm was used as the raw material. The processing was carried out in an argon atmosphere with an oxygen level of …
The annealed CAEBWAMed Ti-6Al-4V alloy exhibits a better combination of high strength and ductility with ultimate tensile strength (UTS) of 992.5 MPa, yield strength (YS) of 887.5 MPa and elongation (EL) of 17.25% [26]. It exhibits a higher strength compared with the annealed casting Ti–6Al–4V with UTS of 930 MPa and YS of 885 …
1. Introduction. In the aeronautics and aerospace industries, titanium alloys are used because of their very high specific mechanical properties, low density and their corrosion resistance at low temperatures [].One of the most important alloys in the Alfa-Beta category is the Ti-6Al-4V alloy, which has greatly influenced applications in the military, chemical, …
INTRODUCTION. ATI Ti-6Al-4V, Grade 5 alloy (UNS R56400) is the most widely used titanium grade. It is a two phase α+β titanium alloy, with aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This high-strength alloy can be used at cryogenic temperatures to about 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is used in the ...
Extra-low interstitial (ELI) grade of Titanium Alloy Ti6Al4V is used for the structural applications in cryogenic stages of launch vehicles due to its high strength-to …
Abstract Ultrasonically treated Ti-6Al-4V alloy samples were examined by X-ray diffraction analysis and transmission electron microscopy, which revealed the formation of a 1-μm-thick layer with the nanocrystalline structure of titanium oxides TiO2 (brookite and srilankite) and α phase on their surface. Beneath the oxide layer there is a …
In this study, we characterized the flow behavior of a Ti–6Al–4V alloy at warm forging temperatures (500–800 °C) and moderate strain rates (0.1–15.0 s − 1).The flow curves were accurately expressed using a general extended C–m model [32].The fitted flow curves were verified by comparison with the experimental results and used to simulate …
Ti–6Al–4V alloy is extremely difficult-to-machine. Titanium and its alloys offered complex and unusual deformation mechanism under extemre working conditions, …
This study introduced a novel magnetic-field regulation method in metallic additive manufacturing to achieve the refined grain structure and enhanced mechanical …
Abstract and Figures. This paper presents a systematic study of heating effects on the hot deformation and microstructure of dual-phase titanium alloy Ti-6Al-4V (TC4) under hot forming conditions ...
The electron beam welding process of titanium alloys induces a series of physicochemical changes in the material that remain a relevant and necessary area of investigation. A necessary step performed after the electron beam welding process of titanium alloys in the Ti6Al-4V grade to mitigate the resulting thermal stresses is the …
For samples made of titanium and Ti-6Al-4V alloy, the hardness of the obtained layers before remelting was 8.8 ± 1.6 GPa and after remelting was 8.4 ± 2.9 GPa. The nanoindentation tests showed that a decrease in the hardness value was noted after laser modification. It is possible that the force applied during the nanoindentation process …
For example, it has been found that Ti-6Al-4V manufactured by Laser Powder Bed Fusion (PBF-LB), the most widely used AM technology, exhibits higher tensile and yield strength than traditionally wrought Ti-6Al-4V due to the presence of higher residual stress and refined α′ martensite resulting from rapid PBF-LB heating and cooling cycles .
Titanium alloys are extensively used in various industries due to their excellent corrosion resistance and outstanding mechanical properties. However, titanium alloys are difficult to machine due to their low thermal conductivity and high chemical reactivity with tool materials. In recent years, there has been increasing interest in the …
This article presents a novel method of protecting titanium alloys from high temperature oxidation during closed-die forging, using a boro-silicate glass coating. The authors investigate the structural and chemical characteristics of the coating/Ti-6Al-4V alloy interfacial region by correlative imaging techniques, such as SEM, EBSD, EDS and TEM. …
where K is a constant with a value of 8.76 × 10 4, ΔM is the mass loss, A is the surface area, T is time, and D is the density of Ti-6Al-4V alloy.. 2.6.2 Electrochemical Corrosion Test. The specimen of dimension 50 mm × 10 mm × 4 mm was cut from the SLM Ti-6Al-4V alloy. The parted specimen was polished as per ASTM E3-11 standard and …
The titanium alloy Ti-6Al-4V is commonly used in aeronautical applications. The machining characteristics of Ti-6Al-4V are described and highlighted in this review …
The deleterious innate attribute of Ti6Al4V, the workhorse material among the alloy series of titanium is its incompetent tribo-behavior. Infinite surface modification techniques, viz., the accretion of adherent appendage layers, diffusion hardening, infusion of residual stresses, microstructural evolution, and phase transformations were attempted …
scientific research of Ti-6Al-4V titanium alloy. 2. Experimental procedure 2.1. Experimental materials The composition of the experimental Ti-6Al-4V titanium alloy material in this subject is shown in Table 1, and its β phase transition point is about 995°C. Table 1 Elemental composition of Ti-6Al-4V alloy (mass fraction/%) Al V Fe C H O N Ti
The element oxygen is expected to be a low-cost, strengthening element of titanium alloys due to its strong solid solution strengthening effect. High cycle fatigue behaviors of Ti-6Al-4V alloys with different oxygen contents (0.17%, 0.20%, 0.23% wt.%) were investigated in this paper. The results illustrated that Ti-6Al-4V-0.20O alloy …
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