Ageing response and strengthening mechanisms in a new Al-Mn-Ni-Cu-Zr alloy designed for laser powder bed fusion

Buttard, Maxence; Freixes, Marti Lopez; Josserond, Charles; Donnadieu, Patricia; Chéhab, Béchir; Blandin, Jean-Jacques; Gault, Baptiste; De Geuser, Frédéric; Martin, Guilhem

doi:10.1016/j.actamat.2023.119271

Cited by 11 publications

(2 citation statements)

References 67 publications

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“…The effect of strengthening metal matrix with intermetallic or other second-phase inclusions is analogous for different groups of alloys including aluminum [31], iron [32] and other metal-based compositions.…”

Section: Quantitative Metallographic Analysismentioning

confidence: 99%

Influence of Noble Metals on the Microstructure and Properties of Biodegradable Mg-Nd-Zr Alloy

Greshta,

Shalomeev,

Bovkun

et al. 2023

Applied Sciences

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In this work, the approach to improve the mechanical properties of a biodegradable Mg-Nd-Zr alloy through modification with noble metals (Ag and Au) was proposed. The separate and combined influence of silver and gold on the macro- and microstructure of the alloy was studied. A qualitative and quantitative assessment of the structural components of the alloy was carried out. It was shown that when modifying the melt, noble metals form the complex intermetallic phases which served as additional crystallization centers. It has been established that adding 0.05 to 0.1 wt.% of noble metals to Mg-based alloy increase the volume fraction of intermetallic compounds by ~1.5 times, shifting them towards smaller size groups with the simultaneous formation of spherical intermetallic compounds. The latter are located in the center of the grain proving them to be the additional nucleation sites. It was shown that complex modification (0.1% Ag + 0.1% Au) of a Mg-based alloy refined its structural components by ~1.5 times, increasing the strength by ~20%, and ductility by ~2 times due to the formation of the intermetallic compounds. The proposed technology for modifying cast biodegradable Mg-based alloys is feasible to be used for the manufacture of implants for osteosynthesis.

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Section: Quantitative Metallographic Analysismentioning

confidence: 99%

Influence of Noble Metals on the Microstructure and Properties of Biodegradable Mg-Nd-Zr Alloy

Greshta,

Shalomeev,

Bovkun

et al. 2023

Applied Sciences

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“…Mn is a common element in aluminium alloys [ 16 , 17 , 18 , 19 , 20 ]. It is found that adding trace Mn to the alloy can improve the microstructure of the alloy, reduce the harm of the impurity element Fe, form the thermal stability strengthening phase T (Al 20 Cu 2 Mn 3 ) in the alloy, and improve the heat resistance of the alloy [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn/Ag Ratio on Microstructure and Mechanical Properties of Heat-Resistant Al-Cu Alloys

Fu,

Yang,

Wang

et al. 2024

Materials

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This paper mainly investigated the effect of the Mn/Ag ratio on the microstructure and room temperature and high-temperature (350 °C) tensile mechanical properties of the as-cast and heat-treated Al-6Cu-xMn-yAg (x + y = 0.8, wt.%) alloys. The as-cast alloy has α-Al, Al2Cu, and a small amount of Al7Cu2 (Fe, Mn) and Al20Cu2 (Mn, Fe)3 phases. After T6 heat treatment, a massive dispersive and fine θ′-Al2Cu phase (100~400 nm) is precipitated from the matrix. The Mn/Ag ratio influences the quantity and size of the precipitates; when the Mn/Ag ratio is 1:1, the θ′-Al2Cu precipitation quantity reaches the highest and smallest. Compared with the as-cast alloy, the tensile strength of the heat-treated alloy at room temperature and high temperature is greatly improved. The strengthening effect of the alloy is mainly attributed to the nanoparticles precipitated from the matrix. The Mn/Ag ratio also affects the high-temperature tensile mechanical properties of the alloy. The high-temperature tensile strength of the alloy with a 1:1 Mn/Ag ratio is the highest, reaching 135.89 MPa, 42.95% higher than that of the as-cast alloy. The analysis shows that a synergistic effect between Mn and Ag elements can promote the precipitation and refinement of the θ′-Al2Cu phase, and there is an optimal ratio (1:1) that obtains the lowest interfacial energy for co-segregation of Mn and Ag at the θ′/Al interface that makes θ′-Al2Cu have the best resistance to coarsening.

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Effect of Mg content on mechanical properties and electrical conductivity of ultrafine-grained Al–Mg–Zr wires produced by ECAP-Conform and drawing

Murashkin,

Sadykov,

Mavlyutov

et al. 2024

J Mater Sci

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Ageing response and strengthening mechanisms in a new Al-Mn-Ni-Cu-Zr alloy designed for laser powder bed fusion

Cited by 11 publications

References 67 publications

Influence of Noble Metals on the Microstructure and Properties of Biodegradable Mg-Nd-Zr Alloy

Influence of Noble Metals on the Microstructure and Properties of Biodegradable Mg-Nd-Zr Alloy

Effect of Mn/Ag Ratio on Microstructure and Mechanical Properties of Heat-Resistant Al-Cu Alloys

Effect of Mg content on mechanical properties and electrical conductivity of ultrafine-grained Al–Mg–Zr wires produced by ECAP-Conform and drawing

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