Search: onr:"swepub:oai:research.chalmers.se:ac6089c8-1553-43ee-a1c4-5717dbf5adf3" >
Evolution of nano-p...
Evolution of nano-pores during annealing of technically pure molybdenum sheet produced from different sintered formats
-
- Jakob, Severin, 1991 (author)
- Montanuniversität Leoben
-
Lorich, A. (author)
-
Knabl, W. (author)
-
show more...
-
- Stark, A. (author)
- Helmholtz Zentrum,Helmholtz Center
-
- Staron, P. (author)
- Helmholtz Zentrum,Helmholtz Center
-
- Clemens, H. (author)
- Montanuniversität Leoben
-
- Spoerk-Erdely, P. (author)
- Montanuniversität Leoben
-
- Maier-Kiener, V. (author)
- Montanuniversität Leoben
-
show less...
-
(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
-
In: International Journal of Refractory Metals and Hard Materials. - : Elsevier BV. - 0263-4368 .- 2213-3917. ; 110
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://research.cha...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Molybdenum is a refractory metal with no phase transformation in the solid state and a high melting point. It is therefore an excellent structural material for various high temperature applications. Especially in this field of operation, significant creep resistance is essential. To achieve this, a microstructure with grains in the range of millimeters is desired. However, as demonstrated in the present study, the onset temperature for secondary recrystallization, which would lead to a beneficial grain size, is among other things dependent on the initial dimensions of the sintered part. One possible reason for the different microstructural evolutions is the influence of residual pores in sub-micrometer size. Sheets were thus fabricated via three different production routes employing the same initial Mo powder to exclude chemical variation as an influencing factor. The samples were investigated by in-situ small-angle X-ray scattering at a synchrotron radiation source with two different heating rates. Additionally, selected annealed samples were studied ex-situ with high energy X-rays. The apparent volume fraction of pores is compared to a volatilization model for the vaporization of typical accompanying elements and the induced thermal expansion.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Molybdenum
- Porosity
- Volatilization
- Recrystallization
- SAXS
- Synchrotron
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database