5-8 September 2022
Wyndham Grand Salzburg Conference Center
Europe/Vienna timezone

Solution treatment duration influence on microstructural and mechanical properties of a cold-rolled Ti-Nb-Zr-Ta-Sn-Fe alloy

7 Sep 2022, 17:55
2m
Wyndham Grand Salzburg Conference Center

Wyndham Grand Salzburg Conference Center

Fanny-von-Lehnert-Straße 7, 5020 Salzburg, Austria
Poster Physical metallurgy in heat treatment and surface engineering Poster

Speaker

Prof. Vasile Danut COJOCARU (University POLITEHNICA of Bucharest)

Description

The influence of solution treatment duration on microstructural and mechanical properties of a cold-rolled Ti-30Nb-12Zr-5Ta-2Sn-1.25Fe (wt.%) (TNZTSF) alloy was investigated in this study. The TNZTSF alloy was produced by cold-crucible induction in levitation synthesis technique, in argon-controlled atmosphere. After synthesis the alloy was processed by cold-rolling deformation, with a total deformation degree (total applied thickness reduction) of 50%, followed by a solution treatment at 850°C with a variable treatment duration from 2min to 30min, in 2min increments. Structural characterization was done using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Mechanical properties were evaluated by tensile and hardness testing. The results show that, (1) the TNZTSF alloy contains single-phase β-Ti phase microstructure in all cold-deformed and solution treated conditions, (2) the microstructure of solution treated conditions shows an increasing in average grain-size and decreasing in internal average micro-strain with solution treatment duration increasing, (3) a suitable combination of high strength – high ductility properties could be obtained due to stability of the β phase.

Acknowledgements: This work was supported by a grant of the Romanian Ministry of Education and Research, CCCDI - UEFISCDI, project number PN-III-P4-2.1-ID PCE-2020-1934, contract PCE213/2021, within PNCDI III.

Speaker Country Romania

Primary authors

Prof. Vasile Danut COJOCARU (University POLITEHNICA of Bucharest) Mr Alexandru DAN (University POLITEHNICA of Bucharest) Dr Nicoleta ZARNESCU-IVAN (University POLITEHNICA of Bucharest) Dr Nicolae SERBAN (University POLITEHNICA of Bucharest) Dr Elisabeta Mirela COJOCARU (University POLITEHNICA of Bucharest) Dr Bogdan Mihai GALBINASU (University of Medicine and Pharmacy “Carol Davila” Bucharest)

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