Phase transition, microstructure and mechanical properties of TC4
TC4 titanium alloy constitutes more than 50% of total Ti usage due to its high strength [2], wide temperature operating range, corrosion resistance and excellent bio-compatibility, it is widely used in the fields of aerospace engineering, automotive technology and medical treatment areas [3,4]. ... which can form a plate or lath structure ...
Microstructure and Properties of Low Cost TC4 Titanium …
3.2The Microstructure and Properties of TC4 Titanium Alloy Plate after Annealing Fig. 2 shows the microstructure treated at 720~950°C for 1h and cooled in air. From this
Ti-6Al-4V (TC4) Titanium Alloy Plate
Ti-6Al-4V (TC4) Containing 6% aluminum and 4% vanadium, this titanium alloy has Extra Low Interval (ELI) and is the most popular titanium alloy we offer. …
Numerical study on laser shock peening of TC4 titanium alloy …
Section snippets Dislocation-mechanism-based constitutive model. In order to simulate LSP of TC4 titanium alloy and reproduce the resultant elastic–plastic deformation behavior associated with the extremely high strain rate (~ 10 6 s-1) hardening effect, the dislocation-mechanism-based constitutive model proposed by Gao et al. [49] was …
Microstructure evolution of S-TC4 titanium alloy blade
This paper proposed to use cross wedge rolling (CWR) to manufacture sintered TC4 (S-TC4) titanium alloy blade preform prepared by powder metallurgy technology. The hot uniaxial compression tests, CWR experiments, and numerical simulation were carried out to investigate the influence of forming parameters on …
Numerical study on laser shock peening of TC4 titanium alloy …
Two kinds of the three-dimensional target models were created to simulate the processes of LSP of TC4 titanium alloy, including the plate model and blade model, as shown in Fig. 2.The plate model with the dimension of 3 5mm × 35 mm × 10 mm was created to simulate the processes of single LSP and multiple LSPs, the simulations of …
Formability and microstructure of TC4 titanium alloy …
2.1 Materials and experimental procedure. The material employed in this experiment is a TC4 alloy hot-rolled bar. Table 1 summarises the main chemical composition of this material. The initial microstructure comprises a matrix alpha phase and a small amount of residual beta phase, which exhibits the structural characteristics of a …
Microstructural evolution and mechanical property of TC4…
The wetting of the CuSi3 droplets on the 304ss and TC4 plate surface was possessed two distinct stages. The droplet transition from filler wire tip to plate was called to the first stage, and the droplet oscillation was more obvious with the ... Brazing TC4 titanium alloy/316L stainless steel joint with Ti 50-x Zr x Cu 39 Ni 11 amorphous filler ...
Mechanical Properties and Constitutive Model of TC4 …
TC4 titanium alloy is an α + β type alloy known as "space metal." It is highly favored by the aerospace, shipbuilding, petroleum, chemical, automotive, and …
Wear-resistant NbMoTaWTi high entropy alloy coating …
Ti-6Al-4 V titanium alloy (TC4) is a stable (α + β) dual-phase titanium alloy, which has great potential for application due to its low density, good toughness and strong weld ability [1], [2], [3]. However, the infertile wear resistance and low hardness of the TC4 alloy limited its widely engineering applications [4], [5], [6].
Study on corrosion resistance of TC4 titanium alloy …
Micro-arc oxidation (MAO) coating was prepared on the surface of TC4 titanium alloy and sealed with (polytetrafluoroethylene [PTFE] + graphite) emulsion to obtain MAO/(PTFE + graphite) composite coating. The surface morphology and phase composition of the MAO coating were studied by scanning electron microscope (SEM) …
(PDF) Effect of welding heat input on microstructure and properties of
A 20 mm thick TC4 titanium alloy plate was welded by ultranarrow gap laser welding with filler wire with Ar and He as shielding gas, respectively. A characterization analysis of the ...
Metals | Free Full-Text | Microstructure and Tensile Property …
Ti-6Al-4V titanium alloy (TC4), as one of the most used titanium alloys in aerospace, has been well studied in investment casting [16,17,18,19,20] and LAM [17,21,22,23,24,25] techniques, respectively. However, there was a lack of relevant discussion about the casting/LAM hybrid manufacturing TC4 in previous research.
Effects of Annealing Temperatures on Microstructure …
The Ti-6Al-4 V (TC4) alloy slab is first smelted by industrial electron-beam cold-hearth melting (EBCHM), and straightly rolled, which can greatly reduce the process flow and cost, but the structure and performance depend on the rolling process. Herein, the effects of annealing temperature (943–1093 K) on the microstructure evolution and …
Microstructure and stress distribution of TC4 titanium alloy …
Welding thick plate has become a topic of interest for multiple industrial sectors for many years. However, there are plenty of difficulties on the joining technology of medium-thickness titanium alloy plate waiting to be solved urgently. In this paper, the microstructure and residual stress distribution of 7.5-mm-thick TC4 titanium alloy jointed …
Metallurgical and Mechanical Characterization of Pure Titanium …
There are lots of research work been done on steel and aluminum, but little on titanium and titanium alloy. Liu et al. (Ref 21 ) have welded 7.5-mm-thick TC4 titanium alloy jointed by laser multi-pass narrow-gap (MPNG) welding, and the microstructure and residual stress distribution are investigated by simulated and experimental methods.
Microstructure and mechanical properties of TC4 titanium alloy …
Production of hollow shafts satisfying mechanical performance requirements can well meet the needs of lightweight. The purpose of this work is to investigate the effect of cross wedge rolling (CWR) process parameters on microstructure and mechanical properties of TC4 titanium alloy hollow shafts, so as to ensure the feasibility of forming …
Narrow Gap Welding for Thick Titanium Plates: A Review
This technology needed reasonable and standard welding process parameters and high precision assembly. Yu et al. [ 3] used magnetically controlled narrow-gap welding technology to weld the 30 and 100 mm thick TC4 titanium alloy. The welding arc under the magnetic field can achieve lateral oscillation periodically.
Effect of welding heat input on microstructure and properties of TC4
The size of TC4 titanium alloy plate used in the experiment is 300 mm × 150 mm × 10 mm.The microstructure of TC4 titanium alloy base metal amplified by 200 times and 500 times is shown in figures 1(a) and (b), respectively. It can be seen that TC4 titanium alloy base metal is composed of α + β biphase, and the average grain size is …
Metals | Free Full-Text | Microstructure and …
TC4 titanium alloy is a typical α+β two-phase titanium alloy. Due to its low density, high specific strength, excellent corrosion resistance, and fatigue resistance, it has been widely used in the …
Laser welding of Ti6Al4V titanium alloys
In this study, butt welding of a small square shaped (30 mm × 30 mm × 3 mm) Ti6Al4V titanium alloy plaques have been done using GSI lumonics JK760TR Series Laser (Class 4) system in a CNC cabin. The chemical composition in weight percentage of the titanium substrate is shown in Table 1. The JK760TR Series of laser is an Nd:YAG …
Optimization, Microstructure, and Properties of Ti-6Al-4 V …
In this paper, Ti-6Al-4 V alloy coatings were fabricated by the laser cladding process on TC4 alloys using a coaxial powder feed method. ... a TC4 alloy plate with a size of 100× 100 × 30 mm was used as the laser cladding substrate. Figure 2 shows the microstructure and schematic diagram of TC4 titanium alloy as substrate material ...
Comparative Study on Laser Welding Thick-Walled TC4 …
A Ti-6Al-4V titanium alloy plate with dimensions of 400 mm 200 mm 20 mm was selected for the test. Before welding, a solution of 5% HF + 30% HNO3 (volume fraction) was used for acid pickling of the plate to be welded to remove surface oil and oxides. The pickled plate was then washed with water and alcohol to remove the pickling solution and dried.
Thermoplastic forming of TC4 titanium alloy sheet by direct …
The plasticity of the TC4 titanium alloy sheet at elevated temperature is better than at room temperature, ... However, the traditional electromagnetic forming without driver plate can hardly form the sheet with high strength and low conductivity such as titanium alloy . Table 2 Free bulging of specimen at different voltages. Full size table.
Effect of microstructural heterogeneity on corrosion fatigue …
1. Introduction. Thick-plate Ti-6Al-4V (TC4) titanium alloy is used in deep-sea exploration equipment, such as the Jiaolong deep-submersible shell, because of their excellent lightweight, high strength, and corrosion resistance, and welding is their common connection method [1], [2], [3], [4].Narrow-gap gas-tungsten arc welding (NG-GTAW) is …
Mechanical Properties and Constitutive Model of TC4 Titanium Alloy …
The dynamic mechanical properties of the TC4 titanium alloy were investigated within a temperature range of − 40 °C to 20 °C and strain rates that range from 500 s−1 to 3000 s−1. Based on the obtained experimental data, modifications were made to the Johnson–Cook (J–C) constitutive model, tailored explicitly for low temperatures. This …
Microstructure and stress distribution of TC4 titanium alloy …
In this paper, the microstructure and residual stress distribution of 7.5-mm-thick TC4 titanium alloy jointed by laser-multi-pass-narrow-gap welding are investigated …
Phase transition, microstructure and mechanical properties …
Highlights • High strength TC4 titanium alloy material is rapidly prepared by Plasma Activated Sintering. • The dense TC4 titanium alloy material is obtained in PAS …
Study on very high cycle fatigue properties of forged TC4 titanium
Semantic Scholar extracted view of "Study on very high cycle fatigue properties of forged TC4 titanium alloy treated by laser shock peening under three-point bending" by Bohan Wang et al. ... (VHCF) problems of thin-plate structures are usually caused by high-frequency vibrations. This paper proposes an accelerated fatigue test …
Experimental study on the dynamic mechanical …
The test data are presented in Fig. 9. The data show that the yield stress decreases with the increase in testing temperature, which conforms to the flow soft-ening behavior of TC4 titanium alloy. As shown in Fig. 10, the 0.2 % offset yield stresses are 1428, 1318, and 1189 MPa for 25, 100, and 200 C, respectively.
Numerical Simulation and Experiment of Electrically-Assisted
1. Introduction. Titanium alloys are used in a wide range of industries, including aerospace, surgical implants, and fuel cells owing to their excellent properties such as moderately high specific strength, good toughness, and excellent corrosion resistance [1,2,3].The Ti-6Al-4V (TC4) titanium alloy is most widely used in this alloy family.
Molecular Dynamics Study on the Welding Behavior in Dissimilar TC4 …
Here, a molecular dynamics study of K-TIG welding behavior between two ternary titanium alloys, TC4 and TA17, has been carried out. The initial configurations of TC4, TA17, and TC4-TA17, ... Dai X., Shi M.H. EBSD Analysis on Tube-Plate Assembly Welding Line of TA 16 and TA17 Alloys. Rare Metal Mat. Eng. 2012; 41:1756–1760. …
Microstructure evolution of S-TC4 titanium alloy blade …
2.1 Materials. The raw material used in the experiments was a TC4 alloy bar made by pressing and sintering, so it is abbreviated as S-TC4. Its chemical composition is shown in Table 1.The initial microstructure is shown in Fig. 1, and it is clear that the microstructure mainly consists of lamellar alpha phase with a couple of equiaxed alpha …
Wetting mechanism and microstructure evolution of TC4…
Before testing, the oxide film on the surface of the TC 4 alloy and 304ss plate was removed using an angle grinder and then cleaned by alcohol. A CMT spot-welding method with EMF was used to study. ... Lap joining of TC4 titanium alloy to 304 stainless steel with fillet weld by GTAW using copper-based filler wire. J. Mater. Process. Technol. …
Mechanical Properties and Fracture Behavior of a TC4 …
Hu et al. studied the material properties of TC4 titanium alloy and 7075 aluminum alloy under uniaxial tension and compression behavior for typical aerospace alloys. The results showed that the mechanical …
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