Microstructural adjustment of hot-rolled Ti–6Al–4V based on a CCT diagram

Alexander Janda, Stefan Ebenbauer, Aude Prestl, Ingo Siller, Helmut Clemens

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

Abstract

The effects of post-processing heat treatments on hot-rolled Ti–6Al–4V with extra low interstitial concentration were investigated. The 2 mm sheets were rolled in the single β phase field region and subsequently cooled in air. A continuous cooling transformation (CCT) diagram was generated, revealing the strong influence of the cooling rate on both microstructure and hardness. Cooling rates between 0.01 and 200°C s−1 were selected. While rapid cooling resulted in a martensitic transformation β → α′, a decrease in the cooling rate led to a progressive spheroidization of the lamellar (α + β) microstructure. With a focus on the established CCT continuous cooling transformation diagram, this study contains insight on the microstructure evolution of the Ti–6Al–4V ELI alloy during cooling from the single β phase field region.
OriginalspracheEnglisch
Seiten (von - bis)957-964
Seitenumfang8
FachzeitschriftMaterials science and technology
Jahrgang38.2022
Ausgabenummer13
Frühes Online-Datum2 Mai 2022
DOIs
PublikationsstatusVeröffentlicht - 2022

Bibliographische Notiz

Funding Information:
We are thankful to S. Mayer for a helpful discussion and to voestalpine Böhler Bleche GmbH & Co KG for the technological support and for providing the material in this joint research project.

Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

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