Heterogeneous Lamella Design to Tune the Mechanical Behaviour of a New Cost-Effective Compositionally Complicated Alloy

Yin, Yu; Tan, Qiyang; Sun, Qiang; Ren, Wangrui; Liu, Shiyang; Liu, Yingang; Bermingham, Michael; Chen, Houwen; Zhang, Mingxing

doi:10.2139/ssrn.3751555

Cited by 1 publication

(5 citation statements)

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“…According to Yu and co-workers, the preferential precipitation of σ phase at the shear bands with a high density of lattice defects (e.g. high-density dislocation walls and nano deformation twins) restrict the growth of recrystallized grains, resulting in the partial recrystallization and thus the formation of HL structure [39]. In addition, Su and co-workers [41] demonstrated a hierarchical microstructure design strategy to improve the mechanical properties of an Fe-rich HEA (Fe 49.5 Mn 30 Co 10 Cr 10 C 0.5 ) by a thermomechanical processing.…”

Section: Microstructure After the Thermomechanical Processmentioning

confidence: 99%

“…Therefore, the thermally and mechanically induced HCP phase plays an important role in plastic accommodation and hardening at later stages of deformation via multiple deformation mechanisms, including dislocation slip, twinning, and the formation of stacking faults [12]. In addition, Yu and coworkers [39] introduced a unique heterogeneous lamella (HL) grain structure with a high density of nanoprecipitates, annealing twins and low angle boundaries in the…”

Section: Microstructure During Deformationmentioning

confidence: 99%

“…Most Fe-rich HEAs or steels with high yield strength correspond to low elongation and vice versa. For instance, the ductile Fe 50 Mn 30 Co 10 Cr 10 alloy with high elongation of over 70% has a yield strength of less than 500 MPa [12], while the Fe 35 Ni 35 Cr 25 Mo 5 HEAs [39] and Fe 49.5 Mn 30 Co 10 Cr 10 C 0.5 [41] after thermomechanical process exhibit a very high strength over 1 GPa but with ductility around 10%. Some HEAs exhibit balanced strength and ductility, such as the Fe 49.5 Mn 30 Co 10 Cr 10 C 0.5 HEA [41].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…This is attributed to their different wear behavior during dry friction (Figure 8g). In contrast to the severe delamination in the HCCI, the peak-aged FeNiCrMoTiC alloy shows moderate abrasive wear and Tensile properties of most currently reported Fe-rich HEAs [12][13][14][39][40][41][42][43][44][45][46] compared with different types of steels (Data of steels is from Ref. [57,58]).…”

Section: Wear Resistancementioning

confidence: 99%

“…Figure 7.Tensile properties of most currently reported Fe-rich HEAs[12][13][14][39][40][41][42][43][44][45][46] compared with different types of steels (Data of steels is from Ref [57,58]…”

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confidence: 99%

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Cost-Effective Fe-Rich High-Entropy Alloys: A Brief Review

Yin¹,

Atrens²,

Huang³

et al. 2023

High Entropy Materials - Microstructures and Properties

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High-entropy alloys (HEAs) have attracted increased attention due to their extraordinary properties. However, the multicomponent characteristic of equiatomic HEAs inevitably leads to high material costs, which thus limits their widespread industrial applications. Although HEAs are claimed to be suitable for applications in extreme environment due to their comprehensive properties, the actual properties of HEAs dramatically vary with compositions and processes. Therefore, the development of cost-effective HEAs with comprehensive properties is indispensable for industrial uses. Till now, although comprehensive review papers on HEAs are available, few works focused on the cost-effectiveness of HEAs, particularly Fe-rich HEAs recently developed. This review thus aims to fill this gap by reviewing the current research progress in Fe-rich HEAs with a focus on the composition design, microstructure, and properties, including mechanical properties, and resistances for oxidation, wear, and corrosion. The challenges for applying cost-effective Fe-rich HEAs into industries are also arising as future research topics.

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Section: Microstructure After the Thermomechanical Processmentioning

confidence: 99%

Section: Microstructure During Deformationmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Wear Resistancementioning

confidence: 99%

“…Figure 7.Tensile properties of most currently reported Fe-rich HEAs[12][13][14][39][40][41][42][43][44][45][46] compared with different types of steels (Data of steels is from Ref [57,58]…”

mentioning

confidence: 99%

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