A review on heat treatment efficiency in metastable β titanium alloys: the role of treatment process and parameters

Yumak, Nihal; Aslantaş, Kubilay

doi:10.1016/j.jmrt.2020.10.088

Cited by 153 publications

(61 citation statements)

References 125 publications

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“…Fine secondary precipitations obtained after aging treatments could result in high strength due to the strong resistance of / interface to dislocation movement [20]. Such age-hardening effect [2,5] imparts M28 the ultra-strength. A mixture of coarse primary phase and fine secondary phase can cause inhomogeneous slip distribution [4], thus increases the toughness of M28.…”

Section: Cutting Forcesmentioning

confidence: 99%

“…Therefore, novel titanium alloys are developed to satisfy the more demanding requirement of material performance in strength-to-weight ratio, strength, fatigue strength and corrosion resistance, et al [1][2][3]. Increasingly more attention has been put on metastable titanium alloys since these alloys can be hardened to extremely high strength and their complex microstructure enables the combination of both high strength and high toughness [4,5]. titanium alloys show good application values in the aircraft component such as landing gears, loadbearing fuselage components and high-lift devices of the large aircraft, plug-and-nozzle assemblies of the jet engine and main bolted rotor head of helicopters, et al [1-3, 6, 7] .…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the Machinability of Metastable β Titanium Alloy M28

Jiang¹,

Tian²,

Yin³

et al. 2021

Preprint

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Oriented to the application of new generation strategic aircraft, M28 (Ti-4Al-5Mo-5V-6Cr-1Nb) is a novel metastable β titanium alloy with outstanding strength. A better understanding of its machinability is the cornerstone of the manufacture. In this work, milling experiments were made with the uncoated WC-Co carbide insert to investigate its machinability. Compared with milling Ti-6Al-4V, the cutting force is much higher and the tool life is considerably shorter in the milling of M28, especially in the high-speed cutting. Serious edge breaking is found at normal cutting speed. While a continuous band of flank wear with significant chip adhesion, which covers comb cracks in the cutting edge, is found in the high-speed cutting tool. The machinability of M28 is considerably poorer than that of Ti-6Al-4V. The hard-to-machine performance of M28 is considered to be subject to the material property of the metastable β titanium alloy as well as the competing mechanism among work hardening, strain rate hardening and the thermal softening in the cutting. According to the detection of the scanning electron microscope (SEM) and the energy dispersive spectrometer (EDS), the diffusion of C and Co generates a negative influence on the cutting edge and accelerates the tool wear.

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Section: Cutting Forcesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on the Machinability of Metastable β Titanium Alloy M28

Jiang¹,

Tian²,

Yin³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Analysis of titanium-aluminium powders is covered in [1]. The biggest problem with studying these materials is their high cost and manufacturing complexity [2]. In addition, the results show that different powder particle sizes and concentrations of hollow material particles lead to high porosity [3].…”

Section: Literature Reviewmentioning

confidence: 99%

Improvement of Processes for Obtaining Titanium Alloys for Manufacturing Parts with Design Elements

Pasternak

Zabolotnyi

Ilchuk

et al. 2021

Lecture Notes in Mechanical Engineering

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The article presents a systematic block diagram for manufacturing TiAl titanium alloys. Based on the developed block diagram of TiAl components, the main already known stages of powder metallurgy manufacturing technology were improved. Based on the obtained chemical reaction of structurally inhomogeneous materials, the intermetallic phase relationship of titanium aluminides was revealed. It is studied that in the zone of interaction of the composition of titanium and aluminium components, a certain thickness of the transition layer is formed, which practically does not change with increasing exposure time. The crystallization process of inhomogeneous TiAl materials was studied in more detail using the constructed crystal lattice of titanium alloys. As a result, the formation of an atomic grid in space was observed. It should also be noted that the recognition of individual areas in microstructural images was carried out using the Smart-eye software package. The microscopic analysis allowed us to predict the main structural characteristics of TiAl components. In particular, to carry out more detailed control of the particles of TiAl components, their density, porosity, relationships with each other, the shape and size of TI and Al powders. The structure of the interaction of TiAl materials and the interpolation dependence of the formed intermetallic layer are also presented. Based on the conducted research, the quality indicators of parts with structural elements, particularly gears, have been improved.

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“…Mo, Nb, and Cr elements can increase the hardenability so as to improve the strength. Sn and Si elements make the alloy have high strength and heat resistance [ 4 , 5 ]. Heat treatment has an important influence on the mechanical properties of titanium alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Third-Stage Heat Treatments on Microstructure and Properties of Dual-Phase Titanium Alloy

Mao

Chen

et al. 2021

Materials

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Two-phase TC21 titanium alloy samples were solution-treated at 990 °C (β phase zone) and cooled by furnace cooling (FC), air cooling (AC), and water quenching (WQ), respectively. The second solution stage treatment was carried out at 900 °C (α + β phase zone), then aging treatment was performed at 590 °C. The influence of the size and quantity of the α phase on the properties of the sample were studied. The experimental results showed as the cooling rate increased after the first solution stage treatment, wherein the thickness of primary layer α gradually decreased, and the tensile strength and yield strength gradually increased. After the second solution stage treatment, the tensile properties of samples increased due to the quantity of layers α increased. The aging treatment promoted the precipitation of the dispersed α phase and further improved the tensile strength. After the third solution stage treatments, the FC samples with more β-phase had the best comprehensive mechanical properties.

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A review on heat treatment efficiency in metastable β titanium alloys: the role of treatment process and parameters

Cited by 153 publications

References 125 publications

Investigation on the Machinability of Metastable β Titanium Alloy M28

Investigation on the Machinability of Metastable β Titanium Alloy M28

Improvement of Processes for Obtaining Titanium Alloys for Manufacturing Parts with Design Elements

Effect of Third-Stage Heat Treatments on Microstructure and Properties of Dual-Phase Titanium Alloy

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