Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate

The properties of steel depend on its chemical composition and structure. The modification of the structure in order to change the properties in a certain way is not only the main purpose of heat treatment, but also the only purpose, because the heat treatment regime influences the variation of properties through the variation of the steel structure. It is only by correlating the variation in structure with hardness that we can answer how heat treatment influences hardness, which also depends on the stress state. The tempering results are mainly influenced by the heating temperature, holding time and less sensitively by the tempering cooling rate (air, oil) as shown in the research carried out and presented in this paper. Tempering reduces hardness, internal stresses, the amount of residual austenite and increases elongation, necking and resilience at the expense of strength. The characteristics of tempering structures are clearly superior to equilibrium (annealing) structures in that the degree of dispersion of the structure is greater and the shape of the carbides and constituents is fine globular.

show abstract

Effect of high strain rates on the mechanical behavior and structure formation of the titanium alloy Ti–6Al–4V

Pokrovsky,

Khina,

Yong

et al. 2024

Dokl. Akad. nauk

View full text Add to dashboard Cite

The mechanical behavior and structure formation of sheet specimens of the titanium alloy Ti–6Al–4V is studied. Low strain rate (quasi-static) deformation at ἐ = 0.001, 0.01, 0.1 and 1 s–1 is compared with fast (dynamic) deformation performed using the Hopkinson method with ἐ = 1290, 2066, 3567, and 3828 s–1. The features of the structure formation mechanism of the titanium alloy Ti–6Al–4V under high-strain-rate (≈3800 s–1) deformation have been determined, namely that along with the dislocation glide, the twinning develops, the characteristics of texture present in the original sheet material undergo changes, plastic deformation occurs throughout the entire volume of the α-phase and β-phase grains (while in the quasi-static mode, mainly plastic deformation of the α-phase grains takes place), dislocation pile-ups and cells inside the grains are formed, which points to intensive interaction of dislocations. The established mechanisms lead to a substantial increase in technological plasticity of the titanium alloy during impact hydroforming as compared to quasi-static deformation.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate

Cited by 3 publications

References 66 publications

Dimensional change and springback of spherical shell in cryogenic forming

Dimensional change and springback of spherical shell in cryogenic forming

The variation of the hardness of high-strength steels depending on the microstructures specific of tempering

Effect of high strain rates on the mechanical behavior and structure formation of the titanium alloy Ti–6Al–4V

Contact Info

Product

Resources

About