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Mechanical Alloying: Processing and Materials
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Mechanical alloying is a technique of producing alloys and compounds that permits the development of metastable materials (with amorphous or nanocrystalline microstructure) or the fabrication of solid solutions with extended solubility. The elements or compounds to be mixed (usually as powders) are introduced in jars usually under a controlled atmosphere. Regarding the scope of this book, advanced materials have been developed by mechanical alloying: Fe–X–B–Cu (X = Nb, NiZr) nanocrystalline alloys, mixtures of the binary Fe–Mn and Fe–Cr alloys with chromium and manganese nitrides, Mn–Al–Co and Mn–Fe alloys, non-equiatomic refractory high-entropy alloys, nanocrystalline Fe–Cr steels, nanaocrystalline Mn–Co–Fe–Ge–Si alloys, Al–Y2O3 nanocomposite, and hydride-forming alloys. Likewise, production conditions and ulterior treatments can provide readers interesting ideas about the procedure to produce alloys with specific microstructure and functional behavior (mechanical, magnetic, corrosion resistance, hydrogen storage, magnetocaloric effect, wastewater treatment, and so on). As an example, to obtain the improvement in the functional properties of the alloys and compounds, sometimes controlled annealing is needed (annealing provokes the relaxation of the mechanical-induced strain). Furthermore, the powders can be consolidated (press, spark plasma sintering,and microwave sintering) to obtain bulk materials.
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Keywords
- Aluminum
- atomic redistribution
- austenitic alloys
- ball-milling
- decolorization
- Fe based alloys
- half-Heusler alloys
- high entropy alloy
- high-nitrogen steels
- hydriding kinetics
- Hydrogen Storage
- LC-MS analysis
- mechanical alloying
- Mechanical properties
- metal hydrides
- microcrystalline (MC) alloy
- Microstructure
- microstructure and mechanical properties
- microwave sintering
- Mössbauer spectroscopy
- n/a
- nanocrystalline (NC) alloy
- oxidation resistance
- phase transformation
- point defects
- reactive black 5
- refractory
- Surface modification
- Technology, engineering, agriculture
- Technology: general issues
- UV-visible spectrophotometry
- yttrium oxide (yttria)
Links
DOI: 10.3390/books978-3-0365-2118-3Editions