Microstructure and properties of rapidly solidified beryllium-transition metal alloys. [With small amounts of Ti, Zr and Y (1-3 wt %)]
Alloys of beryllium with small amounts of Ti, Zr and Y (1-3 wt %) were rapidly solidified using an arc hammer splat technique. Each of these elements forms a dilute eutectic with beryllium, and has very low solid solubility in the alpha phase. In the case of Ti, the Be-rich compound is TiBe/sub 12/, and for Zr and Y, the compound is MBe. The objective of the work was to achieve a fine, uniform dispersion of particles of the intermetallic compound. Since these compounds have very high melting points, it was expected that rapidly solidified microstructures would be relatively stable at elevated temperatures. This microstructural stability should result in improved high temperature properties for the alloys. Microstructures have been characterized using optical, scanning and transmission electron microscopy. Microhardness measurements have been made in order to determine the effects of rapid solidification and to evaluate the effects of high temperature exposure on microstructural stability and property retention. The results will be presented in light of the potential of these alloys for intermediate temperature application. 12 refs., 8 figs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7010327
- Report Number(s):
- LA-UR-88-1586; CONF-880855-2; ON: DE88010937
- Resource Relation:
- Conference: 2. international SAMPE metals and metals processing conference, Dayton, OH, USA, 2 Aug 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Eutectoid reaction in rapidly solidified beta titanium-nickel alloys
Investigation on microstructure characterization and property of rapidly solidified Mg-Zn-Ca-Ce-La alloys
Related Subjects
BERYLLIUM BASE ALLOYS
MICROHARDNESS
MICROSTRUCTURE
SOLIDIFICATION
EUTECTICS
EXPERIMENTAL DATA
INTERMETALLIC COMPOUNDS
SCANNING ELECTRON MICROSCOPY
STABILITY
TITANIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM ALLOYS
ZIRCONIUM ALLOYS
ALLOYS
BERYLLIUM ALLOYS
CRYSTAL STRUCTURE
DATA
ELECTRON MICROSCOPY
HARDNESS
INFORMATION
MECHANICAL PROPERTIES
MICROSCOPY
NUMERICAL DATA
PHASE TRANSFORMATIONS
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties