Characteristic effects of alloying elements on β solidifying titanium aluminides: A review
| Autor: | Sadiq Abiola Raji, Olawale Popoola, S Pityana, Abimbola Patricia Idowu Popoola |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Materials science Turbine blade Alloy Intermetallic chemistry.chemical_element engineering.material Alloy development Article Nanocomposites law.invention 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine law Alloys lcsh:Social sciences (General) Microstructural formation in titanium aluminides lcsh:Science (General) Titanium aluminide Multidisciplinary Nanocomposite Materials characterization Metallurgy Composite materials Effects of alloying elements Superalloy Nickel 030104 developmental biology chemistry engineering lcsh:H1-99 Gamma-titanium aluminides (γ-TiAl) Heat treatments of titanium alloys Grain refinement 030217 neurology & neurosurgery lcsh:Q1-390 Titanium |
| Zdroj: | Heliyon Heliyon, Vol 6, Iss 7, Pp e04463-(2020) |
| ISSN: | 2405-8440 |
| DOI: | 10.1016/j.heliyon.2020.e04463 |
| Popis: | The high strength-to-weight ratio property of titanium aluminide (TiAl) based intermetallic alloys makes researchers regard this type of material as a potential replacement for the heavier superalloys of nickel. These alloys have been applied as turbocharger wheels of automobile and turbine blades of aircraft engines. A much recent alloy type of TiAl called the TNM alloy has emerged and primarily amenable to mechanical working; while providing the best combinations of mechanical properties that could be achieved through manufacturing processes with subsequent heat treatments. This is attained by solidifying entirely through the disordered β-phase (A2 structure). Effects of major alloying elements such as strength improvement, microstructural stability and phase formation demand the understanding of these alloying elements addition in TiAl-based intermetallic alloys. This review paper aims at encapsulating several works regarding the effects of major alloying elements on β-solidifying TiAl-based alloys and summarizing the characteristic effects of Si for these types of alloys. An impetus for future works on these types of intermetallic TiAl-based alloys is also presented. Materials science, Nanocomposites, Metallurgy, Alloys, Composite materials, Materials characterization, Gamma-titanium aluminides (-TiAl), Microstructural formation in titanium aluminides, Grain refinement, Alloy development, Effects of alloying elements, Heat treatments of titanium alloys. |
| Databáze: | OpenAIRE |
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