Evidence of an orthorhombic transition phase in a Ti-44Al-3Mo (at.%) alloy using in situ synchrotron diffraction and transmission electron microscopy

Research output: Contribution to journalArticleResearchpeer-review

Standard

Bibtex - Download

@article{f522b06826d34952bc790ebabff24ce6,
title = "Evidence of an orthorhombic transition phase in a Ti-44Al-3Mo (at.%) alloy using in situ synchrotron diffraction and transmission electron microscopy",
abstract = "Alloying of a binary system with an additional element often leads to the formation of new phases. In this work, a γ-TiAl based alloy with 3 at.% molybdenum was investigated, which was quenched from 1450 °C. Upon reheating, the formation of an orthorhombic phase was observed with the help of in situ high-energy X-ray diffraction. This phase formed at 600 °C and vanished again at 720 °C, and acts as a transition phase between the α 2 and the γ phase. Such a transition phase has not been observed before in this type of alloy. Additionally, transmission electron microscopy was used to study the microstructure of selected sample states on a sub-micrometer level. The orthorhombic phase formed fine lamellae inside the α 2 phase and the α 2 ′ martensite. ",
author = "Michael Musi and Petra Erdely and Boryana Rashkova and Helmut Clemens and Andreas Stark and Peter Staron and Norbert Schell and Svea Mayer",
year = "2019",
month = jan,
doi = "10.1016/j.matchar.2018.11.025",
language = "English",
volume = "147.2019",
pages = "398--405",
journal = "Materials characterization",
issn = "1044-5803",
publisher = "Elsevier",
number = "January",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Evidence of an orthorhombic transition phase in a Ti-44Al-3Mo (at.%) alloy using in situ synchrotron diffraction and transmission electron microscopy

AU - Musi, Michael

AU - Erdely, Petra

AU - Rashkova, Boryana

AU - Clemens, Helmut

AU - Stark, Andreas

AU - Staron, Peter

AU - Schell, Norbert

AU - Mayer, Svea

PY - 2019/1

Y1 - 2019/1

N2 - Alloying of a binary system with an additional element often leads to the formation of new phases. In this work, a γ-TiAl based alloy with 3 at.% molybdenum was investigated, which was quenched from 1450 °C. Upon reheating, the formation of an orthorhombic phase was observed with the help of in situ high-energy X-ray diffraction. This phase formed at 600 °C and vanished again at 720 °C, and acts as a transition phase between the α 2 and the γ phase. Such a transition phase has not been observed before in this type of alloy. Additionally, transmission electron microscopy was used to study the microstructure of selected sample states on a sub-micrometer level. The orthorhombic phase formed fine lamellae inside the α 2 phase and the α 2 ′ martensite.

AB - Alloying of a binary system with an additional element often leads to the formation of new phases. In this work, a γ-TiAl based alloy with 3 at.% molybdenum was investigated, which was quenched from 1450 °C. Upon reheating, the formation of an orthorhombic phase was observed with the help of in situ high-energy X-ray diffraction. This phase formed at 600 °C and vanished again at 720 °C, and acts as a transition phase between the α 2 and the γ phase. Such a transition phase has not been observed before in this type of alloy. Additionally, transmission electron microscopy was used to study the microstructure of selected sample states on a sub-micrometer level. The orthorhombic phase formed fine lamellae inside the α 2 phase and the α 2 ′ martensite.

UR - http://www.scopus.com/inward/record.url?scp=85057220719&partnerID=8YFLogxK

U2 - 10.1016/j.matchar.2018.11.025

DO - 10.1016/j.matchar.2018.11.025

M3 - Article

VL - 147.2019

SP - 398

EP - 405

JO - Materials characterization

JF - Materials characterization

SN - 1044-5803

IS - January

ER -