Effect of Scandium addition on evolution of microstructure, texture and mechanical properties of thermo-mechanically processed Al-Li alloy AA2195

Suresh, M.; Sharma, Ankit; More, A.M.; Nayan, Nafarizal; Suwas, Satyam

doi:10.1016/j.jallcom.2017.12.045

Cited by 61 publications

(24 citation statements)

References 48 publications

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“…The addition of Sc increased the strength and ultimate compression strength of Mg via solid‐solution strengthening owing to its high solubility in Mg and grain refinement 4,49,50 . Also, Mg 17 Sr 2 formation enhances the mechanical properties through solid solution strengthening and precipitation hardening in Mg‐Sc‐Sr alloys due to presence of Mg 17 Sr 2 intermetallic phase 29,51 .…”

Section: Discussionmentioning

confidence: 99%

An osteogenic magnesium alloy with improved corrosion resistance, antibacterial, and mechanical properties for orthopedic applications

Aboutalebianaraki

Zeblisky

Sarker

et al. 2022

J Biomedical Materials Res

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The aim of this study was to develop a novel biodegradable magnesium (Mg) alloy for bone implant applications. We used scandium (Sc; 2 wt %) and strontium (Sr; 2 wt %) as alloying elements due to their high biocompatibility, antibacterial efficacy, osteogenesis, and protective effects against corrosion. In the present work, we also examined the effect of a heat treatment process on the properties of the Mg‐Sc‐Sr alloy. Alloys were manufactured using a metal casting process followed by heat treatment. The microstructure, corrosion, mechanical properties, antibacterial activity, and osteogenic activity of the alloy were assessed in vitro. The results showed that the incorporation of Sc and Sr elements controlled the corrosion, reduced the hydrogen generation, and enhanced mechanical properties. Furthermore, alloying with Sc and Sr demonstrated a significantly enhanced antibacterial activity and decreased biofilm formation compared to control Mg. Also, culturing Mg‐Sc‐Sr alloy with human bone marrow‐derived mesenchymal stromal cells showed a high degree of biocompatibility (>90% live cells) and a significant increase in osteoblastic differentiation in vitro shown by Alizarin red staining and alkaline phosphatase activity. Based on these results, the Mg‐Sc‐Sr alloy heat‐treated at 400°C displayed optimal mechanical properties, corrosion rate, antibacterial efficacy, and osteoinductivity. These characteristics make the Mg‐Sc‐Sr alloy a promising candidate for biodegradable orthopedic implants in the fixation of bone fractures such as bone plate‐screws or intramedullary nails.

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Section: Discussionmentioning

confidence: 99%

An osteogenic magnesium alloy with improved corrosion resistance, antibacterial, and mechanical properties for orthopedic applications

Aboutalebianaraki

Zeblisky

Sarker

et al. 2022

J Biomedical Materials Res

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“…Final grain size control is the main influencing factor to enhance mechanical properties for aluminum alloys in general. Grain refinement of the third generation Al–Li alloys has been investigated by so many researchers [ 18 , [158] , [159] , [160] ]. Xinxiang et al.…”

Section: Precipitations Mechanical Properties and Grain Refinement Of...mentioning

confidence: 99%

“…Suresh et al. [ 158 ] in the investigation on effect of Sc addition on the evolution on the texture of AA2195 alloys during thermo-mechanical processing, they concluded that the Sc addition reduce the grain size and enhanced precipitation kinetics with hardness and strength improvement as well as the presence of fine Al 3 (Sc,Zr) dispersoids.…”

Section: Precipitations Mechanical Properties and Grain Refinement Of...mentioning

confidence: 99%

A review of manufacturing processes, mechanical properties and precipitations for aluminum lithium alloys used in aeronautic applications

Hajjioui

Bouchaâla

Faqir

et al. 2023

Heliyon

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“…It has been demonstrated that such an addition leads to the formation of Al 3 (Sc,Zr) ternary dispersoids, resulting in a significant enhancement of the resistance to recrystallisation [19,29,43,50,51]. In a recent year, Suresh et al [52] studied the effect of Sc addition on the microstructure and mechanical properties of the hot-rolled AA2195 Al-Li alloy. In their work, the TEM image presented in Figure 6(a) showed that the majority of the particles were From Figure 7, it could be seen that the Al-Mg-Zr and Al-Mg-Zr-Sc alloys have the same hardness in the ascast state but show distinct hardening behaviours during the annealing treatment.…”

Section: Alloying With Dispersoid-forming Elementsmentioning

confidence: 99%

Progress in dispersoids distribution precipitating during homogenising Zr-containing Al–Cu–Li and Al–Zn–Mg alloys

Han

Wang

et al. 2020

Materials Science and Technology

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Retaining elongated grain microstructure during thermo-mechanical processes would be attractive for obtaining high-strength aluminium alloys with good toughness. A small Zr addition promotes the formation of Al3Zr dispersoids to inhibit the recrystallisation. Since the dispersoids precipitate directly from castings, their inhomogeneous distribution reduces the effectiveness on the recrystallisation resistance. This paper systematically summarised the theoretical and experimental contributions to optimise the distribution of dispersoids in the Zr-containing aerospace Al alloys including Al–Cu–Li and Al–Zn–Mg alloys. It is concluded that improving the distribution of dispersoids across a grain can be effectively realised by refining the homogenisation conditions such as lowering ramp heating rate, two-step homogenisation, etc., and by controlling the concentrations of the dispersoid-forming elements such as Zr, Mn, Sc, etc.

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Effect of Scandium addition on evolution of microstructure, texture and mechanical properties of thermo-mechanically processed Al-Li alloy AA2195

Cited by 61 publications

References 48 publications

An osteogenic magnesium alloy with improved corrosion resistance, antibacterial, and mechanical properties for orthopedic applications

An osteogenic magnesium alloy with improved corrosion resistance, antibacterial, and mechanical properties for orthopedic applications

A review of manufacturing processes, mechanical properties and precipitations for aluminum lithium alloys used in aeronautic applications

Progress in dispersoids distribution precipitating during homogenising Zr-containing Al–Cu–Li and Al–Zn–Mg alloys

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