Hot deformation behavior and processing maps for an Al-Mg-Si-Zr-Mn alloy

Ghosh, Abhishek; Elasheri, Ali; Parson, Nick; Chen, X.-Grant

doi:10.1016/j.jalmes.2024.100077

Cited by 3 publications

(1 citation statement)

References 45 publications

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“…η represents the energy consumed by the microstructural evolution, such as DRV, DRX, and phase transition. The power dissipation value η > 35% can be expressed as a high-power dissipation region, which contributes to the hot processing of materials [ 49 , 50 , 51 ]. It should be noted that abnormal coarsening and flow instability may occur in the high-power dissipation region [ 52 ].…”

Section: Resultsmentioning

confidence: 99%

Determining the Hot Workability and Microstructural Evolution of an Fe-Cr-Mo-Mn Steel Using 3D Processing Maps

Dou,

Sun,

Shen

et al. 2024

Materials

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The Laasraoui segmented and Arrhenius flow stress model, dynamic recrystallization (DRX) model, grain size prediction model, and hot processing map (HPM) of Fe-Cr-Mo-Mn steels were established through isothermal compression tests. The models and HPM were proven by experiment to be highly accurate. As the deformation temperature decreased or the strain rate increased, the flow stress increased and the grain size of the Fe-Cr-Mo-Mn steel decreased, while the volume fraction of DRX (Xdrx) decreased. The optimal range of the hot processing was determined to be 1050–1200 °C/0.369–1 s−1. Zigzag-like grain boundaries (GBs) and intergranular cracks were found in the unstable region, in which the disordered martensitic structure was observed. The orderly packet martensite was formed in the general processing region, and the mixed structure with incomplete DRX grains was composed of coarse and fine grains. The microstructure in the optimum processing region was composed of DRX grains and the multistage martensite. The validity of the Laasraoui segmented flow stress model, DRX model, grain size prediction model, and HPM was verified by upsetting tests.

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Section: Resultsmentioning

confidence: 99%

Determining the Hot Workability and Microstructural Evolution of an Fe-Cr-Mo-Mn Steel Using 3D Processing Maps

Dou,

Sun,

Shen

et al. 2024

Materials

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Understanding the isothermal compression behavior of Al-Mg-Si alloy based on hot deformation parameters and instability criteria

Zhao,

Li,

Zhu

et al. 2024

Materials Today Communications

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Consumption of wild edible plants in the Kofale and Heban-Arsi districts, West Arsi Zone, Oromia Regional State, Ethiopia

Nuro,

Tolossa,

Giday

2024

Preprint

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Background Wild edible plants (WEPs) are neglected and have received little attention despite their significant contributions to the sustenance and livelihoods of rural communities. This study was conducted in the Kofale and Heban-Arsi districts of the Oromia Regional State, Ethiopia, to document the diversity of WEPs, their utilization, and threats facing them. Methods Ethnobotanical data were collected via semi-structured interviews, field observations, focus-group discussions and guided field walks. The interviews involved290 informants who were selected via snowball sampling and systemic random sampling methods. Preference ranking values, direct matrix rankings, and use values (UVs) of selected species were computed. Results A total of 62 WEPs species belonging to 38 families and 56 genera were identified. The Moraceae family included 7 species, and the Fabaceae family included 4 species. Shrub was the dominant growth form (32 species), followed by herbs (13 species). The largest number (24 species) of WEPs was collected from grazing lands/fields, followed by forest habitats (17 species). The most widely used edible plant part was fruit (40 species) and leaf (11 species). Most WEPs were collected for consumption from March to May (30 species), and the majority of the species (48, 77.4%) were utilized in their raw state. A large number of WEP (41 species) were consumed only during periods of food shortage, and the remaining (21 species) were used as staple food supplements. Multiple other uses of WEPs in the study area have also been reported. Fifty-two species were mentioned for medicinal use, and the species that had the highest use value was Cordia africana Lam. (0.9). The direct matrix ranking results indicated that agricultural expansion was a principal threat to the WEPs in the study area. Conclusion This study indicated that WEPs are widely used during food shortages in the study area, but many WEP species are under threat due to growing pressure from various anthropogenic factors. Thus, public awareness and community-based management need to be encouraged at all levels to conserve and sustainably use these resources to address food insecurity.

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Hot deformation behavior and processing maps for an Al-Mg-Si-Zr-Mn alloy

Cited by 3 publications

References 45 publications

Determining the Hot Workability and Microstructural Evolution of an Fe-Cr-Mo-Mn Steel Using 3D Processing Maps

Determining the Hot Workability and Microstructural Evolution of an Fe-Cr-Mo-Mn Steel Using 3D Processing Maps

Understanding the isothermal compression behavior of Al-Mg-Si alloy based on hot deformation parameters and instability criteria

Consumption of wild edible plants in the Kofale and Heban-Arsi districts, West Arsi Zone, Oromia Regional State, Ethiopia

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