Evolution of texture in Alloy 80A during initial ingot breakdown
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Gregor Wasle
,
Helmut Clemens
Abstract
This paper presents details on the evolution of texture in Alloy 80A during the initial ingot break-down process by means of repeated hot-working (cogging). The ingot was produced by vacuum arc re-melting showing equiaxed and columnar grains. Compression tests were performed with a Gleeble system covering the range of temperatures, strains, and strain rates experienced during processing on an industrial scale. Texture analysis (neutron and electron backscatter diffraction) was applied to all specimens before and after hot deformation to reflect the thermo-mechanical history. The ingot exhibited a well pronounced <100>-fiber texture of the initial microstructure. Low deformation ratios did not change the type of texture, but the degree of the preferred orientation. High strains partially result in the destruction of the fiber texture and lead to the appearance of additional texture components, such as cube- and Goss-components. With continued deformation, recovery and recrystallization become predominant.
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The authors gratefully acknowledge the financial support of the BMBF (German Ministry of Education and Research) under contract number 03BRE8CL. We wish to acknowledge the assistance of the “Research Institute for Electron Microscopy and Fine Structure Research” at Graz University of Technology (TUG), Austria. Financial support from the Austrian Kplus Program, Project MCL M1 is greatly appreciated.
References
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© 2004 Carl Hanser Verlag, München
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Artikel in diesem Heft
- Frontmatter
- Editorial
- 50 Jahre Metallkunde-Kolloquium am Arlberg
- Articles Basic
- Microstructure and mechanical properties of Si and YN doped powder metallurgical tantalum
- Mechanical model for the deformation of the wood cell wall
- Physical metallurgy of high Nb-containing TiAl alloys
- Phase and microstructure selection in peritectic alloys under high G-V ratio
- Austenitic stainless steels of high strength and ductility
- Articles Applied
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- Mechanische Zuverlässigkeit von keramischen Kaltleiterbauelementen – Möglichkeiten zur Verbesserung
- Physical and materials aspects of photonic crystals for microwaves and millimetre waves
- In-situ investigation of strain relaxation in an Al/Si–MMC using high energy synchrotron radiation
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- Characterisation of precipitates in a stainless maraging steel by three-dimensional atom probe and small-angle neutron scattering
- Modifikation von Titanlegierungen für medizinische Anwendungen
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- Notifications/Mitteilungen
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