Alpha-case formation mechanism on titanium investment castings
Creators
- 1. Department of Advanced Materials Engineering, Sungkyunkwan University, 300 Chunchun-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of)
Description
The aim of this study is to clarify of the alpha-case formation mechanisms for the economic net-shape forming of Ti and Ti alloys. The alpha-case formation reaction between Ti and Al2O3 mold was examined in a plasma arc melting furnace. The reaction products were characterized by electron probe micro-analyzer and transmission electron microscopy. The alpha-case generation between Ti and Al2O3 mold could not be explained by the conventional alpha-case formation mechanism, which is known to be formed by the interstitials, especially oxygen dissolved from mold materials. However, from the experimental results and thermodynamic consideration, it could be confirmed that the alpha-case is formed by not only interstitial oxygen atoms but also substitutional metal atoms dissolved from mold materials
Additional details
Identifiers
- DOI
- 10.1016/j.msea.2005.05.092;
- PII
- S0921-5093(05)00564-2;
Publishing Information
- Journal Title
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Journal Volume
- 405
- Journal Issue
- 1-2
- Journal Page Range
- p. 173-177
- ISSN
- 0921-5093
- CODEN
- MSAPE3
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38076171
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALLOYS; ALUMINIUM OXIDES; CASTING; CASTINGS; ELECTRON PROBES; FURNACES; INTERSTITIALS; MELTING; OXYGEN; TITANIUM; TRANSMISSION ELECTRON MICROSCOPY
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CHALCOGENIDES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTRON MICROSCOPY; ELEMENTS; FABRICATION; METALS; MICROSCOPY; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; POINT DEFECTS; PROBES; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.