Formation and stability of intermetallic compounds during mechanoactivation of powders in ball mills
Creators
- 1. Moskovskij Inst. Stali i Splavov, Moscow (Russian Federation)
Description
Structural changes in pure metal powders (Fe and Ni) and compositions on their bases were investigated after powder treatment in vibratory and planetary ball mills with the aim of mechanical alloying. Mechanism of solid state reactions was judged from the analysis of data on line broadening in X-ray spectra. It was revealed that mechanical activation in the air resulted in amorphization for Ni-Ti, Fe-Zr and Ti-Al systems, in intermetallic phase formation for Ni-Al system and in alpha-iron base solid solution for Fe-W system. Helium environment led to amorphization only in Ni-Ti and Fe-Zr systems. A conclusion was made that new phase formation under mechanical activation conditions might be considered as the process of attainment of metastable equilibrium with accounting for chemical composition, defectness and long-range and short-range order parameters
Additional details
Additional titles
- Original title (Russian)
- Образование и устойчивость интерметаллических соединений при механоактивации порошков в шаровой мельнице
Publishing Information
- Journal Title
- Fizika Metallov i Metallovedenie
- Journal Issue
- no.2
- Series
- Fiz. Met. Metalloved.
- ISSN
- 0015-3230
- CODEN
- FMMEA
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- USSR
- INIS RN
- 23069881
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- COMPOSITE MATERIALS; CRUSHING; DISLOCATIONS; INTERMETALLIC COMPOUNDS; LATTICE PARAMETERS; LINE WIDTHS; NICKEL ALLOYS; PHASE STUDIES; POWDERS; RHENIUM ALLOYS; TITANIUM ALLOYS; TUNGSTEN ALLOYS; X-RAY DIFFRACTION; ZIRCONIUM ALLOYS
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIFFRACTION; LINE DEFECTS; MATERIALS; MECHANICAL FRAGMENTATION; SCATTERING