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

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

doi:10.1080/02670836.2022.2068243

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

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

Chair of Physical Metallurgy (420)

voestalpine BOEHLER Bleche GmbH & Co KG

Research output: Contribution to journal › Article › Research › peer-review

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.

Original language	English
Pages (from-to)	957-964
Number of pages	8
Journal	Materials science and technology
Volume	2022
Issue number	Volume 38, Issue 13
DOIs	https://doi.org/10.1080/02670836.2022.2068243
Publication status	Published - 2022

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10.1080/02670836.2022.2068243

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

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.",

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T1 - Microstructural adjustment of hot-rolled Ti–6Al–4V based on a CCT diagram

AU - Janda, Alexander

AU - Ebenbauer, Stefan

AU - Prestl, Aude

AU - Siller, Ingo

AU - Clemens, Helmut

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85132669090

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DO - 10.1080/02670836.2022.2068243

M3 - Article

SN - 0267-0836

VL - 2022

SP - 957

EP - 964

JO - Materials science and technology

JF - Materials science and technology

IS - Volume 38, Issue 13

ER -

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

Abstract

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