Journal Article

FZJ-2018-03916

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Alloying effects in Mo-5X (X=Zr, Ti,V) – Microstructural modifications and mechanical properties

Becker, J. (Corresponding author) ; Betke, U. ; Wessel, E.FZJ* ; Krüger, M.FZJ*

2018
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.mtcomm.2018.04.005

Abstract: The microstructures and mechanical properties of three different cast Mo-5X (X = Zr, Ti, V) alloys were investigated. The alloys Mo-5Ti and Mo-5V show a single-phase solid solution microstructure, whereas the Mo-5Zr alloy exhibits polycrystalline Mo2Zr phases embedded in the Mo(Zr) solid solution matrix. Microhardness measurements were carried out by the Vickers indentation method. Compared to the single-phase solid solution alloys the Mo2Zr precipitations in Mo-5Zr result in the highest microhardness. Based on a well-known solid solution model it was shown that Zr, Ti and V are effective solid solution strengtheners. Additionally, constant displacement tests in the compressive mode between room temperature and 1100 °C confirm these findings. However, the homogeneously distributed Mo2Zr phases offer an extraordinary potential to improve the high temperature strength of Mo-based alloys.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 111 - Efficient and Flexible Power Plants (POF3-111) (POF3-111)

Appears in the scientific report 2018

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Database coverage:
Emerging Sources Citation Index ; SCOPUS ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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