Unravelling thermal-mechanical effects on microstructure evolution under superplastic forming conditions in a near alpha titanium alloy
Yasmeen, Tabassam and Rahimi, Salah and Hopper, Christopher and Zhang, Chi and Jiang, Jun (2022) Unravelling thermal-mechanical effects on microstructure evolution under superplastic forming conditions in a near alpha titanium alloy. Journal of Materials Research and Technology, 18. pp. 4285-4302. ISSN 2238-7854 (https://doi.org/10.1016/j.jmrt.2022.04.063)
Preview |
Text.
Filename: Yasmeen_etal_JMRT_2022_Unravelling_thermal_mechanical_effects_on_microstructure_evolution_under_superplastic_forming.pdf
Final Published Version License: Download (14MB)| Preview |
Abstract
The superplastic formability of titanium alloys has been extensively exploited by various industries, especially for manufacturing of high value aerospace components. Material's microstructural characteristics, such as grain size and dislocations density, determine superplastic formability during manufacturing process and various constitutive relationships have been proposed to take their effects into consideration in modelling and simulation. However, most existing models do not include all these characteristics in their analyses due to the limitations in characterization techniques. This paper reports the results of a systematic study on the effects of thermal (i.e., static) and mechanical (i.e., dynamic) process parameters on the evolution of dislocations and microstructure, both independently and simultaneously, at superplastic forming regime. The evolution of microstructural phase fraction, grain size, crystallographic texture, and geometrically necessary dislocation (GND) density are investaged over a temperature range of 880–920 °C and under strain rates between 0.0005 and 0.01s−1. The results provide valuable insights into the microstructure evolution during superplastic forming on TA15 titanium alloy and form a basis for future physically based constitutive modelling.
ORCID iDs
Yasmeen, Tabassam, Rahimi, Salah ORCID: https://orcid.org/0000-0001-6461-988X, Hopper, Christopher, Zhang, Chi and Jiang, Jun;-
-
Item type: Article ID code: 80707 Dates: DateEvent1 June 2022Published18 April 2022Published Online12 April 2022AcceptedSubjects: Technology > Manufactures Department: Faculty of Engineering > Design, Manufacture and Engineering Management > National Manufacturing Institute Scotland Depositing user: Pure Administrator Date deposited: 13 May 2022 12:51 Last modified: 08 Oct 2024 00:22 URI: https://strathprints.strath.ac.uk/id/eprint/80707