Published October 10, 1988
| Version v1
Journal article
Phase formation in mechanically alloyed Nb-Al powders
Creators
- 1. Siemens AG, Research Laboratories, Erlangen, West Germany
Description
Nb-Al alloys have been prepared by mechanical alloying of elemental crystalline powders and investigated with x-ray diffraction and transmission electron microscopy. Crystalline equilibrium phases form for Al-rich alloys. Amorphous phase formation is observed for the Nb50Al50 composition. Mechanically alloyed powders with more than 70 at. % Nb exhibit the metastable bcc (A2) solid solution which transforms after thermal annealing into the A15 phase. Formation of the different phases can be understood by considering the free-energy curves of the amorphous and bcc phases as calculated from the phase diagram and additional thermodynamic data
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 53
- Journal Issue
- 15
- Series
- Appl. Phys. Lett.
- Journal Page Range
- 1399-1401
- ISSN
- 0003-6951
- CODEN
- APPLA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 20001752
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALUMINIUM ALLOYS; AMORPHOUS STATE; ANNEALING; EXPERIMENTAL DATA; FABRICATION; FREE ENERGY; NIOBIUM BASE ALLOYS; PHASE STUDIES; POWDER METALLURGY
- Descriptors DEC
- ALLOYS; DATA; ENERGY; HEAT TREATMENTS; INFORMATION; METALLURGY; NIOBIUM ALLOYS; NUMERICAL DATA; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES