Causes of surface stripe cracks of Ti–4Al–2V alloy cold-rolled sheet

Deming, Huang; Yang, Xiongfei; Wei, Qingfeng; Chen, Yong; Hua, Guo; Liang, Shenglong; Ying, Wang

doi:10.1007/s12598-013-0132-z

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…It is also popular in the aerospace field [3], including gas turbine engines, load-carrying airframes, and wallboards because of its high strength-to-weight ratio, good toughness, resistance to corrosion, excellent thermal stability, and strength [4,5]. The Ti-4Al-2V (TA17) is of near α titanium alloy which is widely applied for aerospace applications and the high-pressure water/steam and high-temperature environment [6]. Titanium alloy is usually deformed at high temperature, such as 900 • C, in order to avoid low ductility and spring back.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy

Yan

Zhang

et al. 2019

Metals

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In this study, the effect of initial annealing microstructure of Ti–4Al–2V (TA17) alloy on forming characteristic was studied, so as to provide a basis for quality control of plastic forming of titanium alloy parts. The titanium alloy always undergoes annealing treatment before forming, due to different microstructures present different mechanical properties. The TA17 with different microstructures are obtained by means of various annealing treatment temperatures. The tensile behavior of TA17 is investigated at room temperature and 900 °C under constant strain rate of 0.01 s−1. The experimental results show that the mechanical properties of TA17 are sensitive to the initial microstructure before deformation. The microstructure of TA17 at 850 °C (2 h) is the equiaxed primary α-phase after the annealing process. It exhibits good plasticity at room temperature. This phenomenon is also confirmed from fracture morphology from the scanning electron microscope (SEM) analysis. At 900 °C, which is a high tensile temperature, the alloy with equiaxed primary α-phase performs outstanding plasticity compared with other microstructures. This work establishes a good understanding on the relationship between the mechanical properties and microstructures of TA17 at a wide temperature range.

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Section: Introductionmentioning

confidence: 99%

The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy

Yan

Zhang

et al. 2019

Metals

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“…The Ti6Al4V (TC4) titanium alloy displays great comprehensive performance, and it is suitable for various press-forming processes by virtue of its high strength and fine process plasticity, which is extensively applied in the pressureresistant hulls of marine parts [9][10][11]. Ti4Al2V (TA17) belongs to a class of medium-strength titanium alloys with promising weldability, corrosion resistance, and impact toughness, and is particularly beneficial for the manufacture of loaded components, such as flanges and skeletons employed in the marine environment [12][13][14]. Actually, these two typical titanium alloys have shown great promise in marine parts manufacturing, but there is still a shortcoming regarding long-term service structural integrity when simply joining the two together.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Study on the Welding Behavior in Dissimilar TC4-TA17 Titanium Alloys

Cao

et al. 2022

Materials

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Titanium alloys have become the material of choice for marine parts manufacturing due to their high specific strength and excellent resistance to seawater corrosion. However, it is still challenging for a single titanium alloy to meet the comprehensive specifications of a structural component. In this study, we have applied a molecular dynamics approach to simulate the aging phase transformation, K-TIG welding process, and mechanical properties of the TC4-TA17 (Ti6Al4V-Ti4Al2V) alloy. The results show that during the aging phase transformation process, changes in the structure of the titanium alloys are mainly manifested in the precipitation of a new phase from the sub-stable β-phase, and after the state stabilization, the α-phase content reaches 45%. Moreover, during the melting and diffusion process of TC4-TA17, aluminum atoms near the interface diffuse, followed by titanium atoms, while relatively few vanadium atoms are involved in the diffusion. Finally, the results of tensile simulations of the TC4-TA17 alloy after welding showed that stress values can reach up to 9.07 GPa and that the mechanical properties of the alloy in the weld zone are better than those of the single alloys under the same conditions. This study will provide theoretical support for the optimization of process parameters for TC4-TA17 alloy welding.

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Stability of NiCrAlY coating/titanium alloy system under pure thermal exposure

Peng

Liu

et al. 2015

Rare Met.

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Causes of surface stripe cracks of Ti–4Al–2V alloy cold-rolled sheet

Cited by 4 publications

References 9 publications

The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy

The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy

Molecular Dynamics Study on the Welding Behavior in Dissimilar TC4-TA17 Titanium Alloys

Stability of NiCrAlY coating/titanium alloy system under pure thermal exposure

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