Hot Deformation Behavior and Microstructural Evolution of PM Ti43Al9V0.3Y with Fine Equiaxed γ and B2 Grain Microstructure

Zhang, Dongdong; Chen, Yuyong; Zhang, Guoqing; Liu, Na; Kong, Fantao; Tian, Jing; Sun, Jianfei

doi:10.3390/ma13040896

Cited by 3 publications

(2 citation statements)

References 60 publications

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“…The gamma-TiAl (γ-TiAl) alloy is a novel type of lightweight material [ 53 ]. γ-TiAl-based alloys are potential substitutes for nickel (Ni) based superalloys especially in applications that require considerable weight saving and minimal redesigning [ 15 , 28 , 48 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 ].…”

Section: Introductionmentioning

confidence: 99%

“…The intermetallic Ti–Al ordered system is still a topic of extensive study because of its inherent applications for structural materials operating at elevated temperatures [ 6 , 23 , 47 , 53 , 54 , 60 , 69 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 ]. The successful integration of TiAl-based alloys parts into aircraft engines is predicted to tremendously decrease greenhouse gas emission and fuel consumption [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Characteristic effects of alloying elements on β solidifying titanium aluminides: A review

Raji

Popoola

Pityana

2020

Heliyon

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characteristic effects of alloying elements on β solidifying titanium aluminides: A review

Raji

Popoola

Pityana

2020

Heliyon

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Microstructure and mechanical properties of high relative density Ti-48Al-1Fe alloy using irregular blend powder

Wang,

Zhang,

Pan

et al. 2024

Journal of Alloys and Compounds

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Empirical modelling of 2205 DSS flow curves using strain-compensated Arrhenius rate-type constitutive model

Gonya,

Siyasiya,

Makhatha

2024

Sci Rep

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This work predicts, hot flow curves of 2205 DSS using strain-compensated Arrhenius rate-type constitutive model. Twenty-five (25) × Ø10 diameter × 15 mm height cylindrical samples were hot compressed at a temperature between 850 and 1050 °C at an interval of 50 °C and strain rates between 0.001 and 5 s−1, using Gleeble 1500D. After the tests, corrected flow curves were plotted followed by computation of deformations constants at various deformation conditions using steady state stress. The values of the constants were (α = 0.009708, Q = 445 kJ/mol and n = 3.7) and seemed comparable to the previous studies of DSS. Steady state predictive model was then constructed using the calculated constants and showed a reasonably good accuracy with low value of MARE = 7.78%. Furthermore, calculated strain compensated Arrhenius rate type model was used to predict flow curves at various deformation. The model had a good estimation of flow curves of flow curves at 900–1050 °C across all strain rates as reflected by MARE = 5.47%. A notable discrepancy between predicted and experimental flow stress was observed at 850 °C and across all the strain rates. A model refinement using generalised reduced gradient improved the accuracy of the model by 34.7% despite deformation conditions at 850 °C and low strain rates (0.01/ 0.1) s−1 showing minimum improvement. Further modification of Z-parameter by compensating for the strain rate improved the accuracy of the model at 850 °C/0.01 s−1/0.1 s−1. Lastly, a comparison of the current model with the other non-linear model showed that the latter was more accurate in estimation of flow curves since it relied on characteristics flow stress points controlled by underlying active deformation mechanisms.

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Hot Deformation Behavior and Microstructural Evolution of PM Ti43Al9V0.3Y with Fine Equiaxed γ and B2 Grain Microstructure

Cited by 3 publications

References 60 publications

Characteristic effects of alloying elements on β solidifying titanium aluminides: A review

Characteristic effects of alloying elements on β solidifying titanium aluminides: A review

Microstructure and mechanical properties of high relative density Ti-48Al-1Fe alloy using irregular blend powder

Empirical modelling of 2205 DSS flow curves using strain-compensated Arrhenius rate-type constitutive model

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