Fatigue strength and microstructure evaluation of Al 7050 alloy wires recycled by spray forming, extrusion and rotary swaging

Salvo, João Guilherme Jacon de; Afonso, Conrado Ramos Moreira

doi:10.1016/s1003-6326(20)65454-1

Cited by 18 publications

(4 citation statements)

References 34 publications

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“…To further enhance the overall performance of this series of alloys, extensive investigations have been conducted [1][2][3][4][5], including modifications to the chemical composition and the adoption of new production methods. Consequently, spray forming, a technique that has demonstrated clear advantages in producing ingots with fine grains, a uniform structure, and minimal oxidation, was introduced to fabricate high-alloying and high-strength aluminum alloys [6,7]. Over the recent decades, spray-formed Al-Zn-Mg-Cu alloys have undergone successful development and have been progressively commercialized [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hot Deformation and Heat Treatment on the Microstructure and Properties of Spray-Formed Al-Zn-Mg-Cu Alloys

Cao,

Lin,

Zhang

et al. 2024

Metals

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Spray forming is a manufacturing process that enables the production of high-performance metallic materials with exceptional properties. Due to its rapid solidification nature, spray forming can produce materials that exhibit fine, uniform, and equiaxed microstructures, with low micro-segregation, high solubility, and excellent workability. Al-Zn-Mg-Cu alloys have been widely used in the aerospace field due to their excellent properties, i.e., high strength, low density, and outstanding machinability. The alloy manufactured by spray forming has a combination of better impact properties and higher specific strength, due to its higher cooling rate, higher solute concentration, and lower segregation. In this manuscript, the recent development of spray-formed Al-Zn-Mg-Cu alloys is briefly reviewed. The influence of hot working, i.e., hot extrusion, hot forging, and hot rolling, as well as different heat treatments on the property and microstructure of spray-formed Al-Zn-Mg-Cu alloys is introduced. The second phases and their influence on the microstructure and mechanical properties are summarized. Finally, the potential in high-temperature applications and future prospects of spray-formed aluminum alloys are discussed.

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Section: Introductionmentioning

confidence: 99%

Effect of Hot Deformation and Heat Treatment on the Microstructure and Properties of Spray-Formed Al-Zn-Mg-Cu Alloys

Cao,

Lin,

Zhang

et al. 2024

Metals

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“…Ahmed et al found that the rotational bending fatigue strength of swaged 316 L stainless steel increased by 40% [16]. The study by de Salvo et al indicated that the fatigue strength of swaged Al wire was increased by 20%, and the dispersion of the fatigue test data was also reduced [17]. Abdulstaar et al found that the fatigue limit of the swaged fine-grained 1050 Al was about It is well known that 42CrMo steel has the good properties of high strength, ductility, toughness and wear resistance, and has been widely applied in critical shafts and axles with large cross-sections, complex shapes, and heavy workloads [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Ahmed et al found that the rotational bending fatigue strength of swaged 316 L stainless steel increased by 40% [ 16 ]. The study by de Salvo et al indicated that the fatigue strength of swaged Al wire was increased by 20%, and the dispersion of the fatigue test data was also reduced [ 17 ]. Abdulstaar et al found that the fatigue limit of the swaged fine-grained 1050 Al was about 125% higher than that of the original coarse-grained material [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotary Swaging on Mechanical Behaviors of Axle Steel Rod

Tian,

Xu,

Zheng

et al. 2024

Materials

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The short-chain forming process using rotary swaging (RS) is an important method of achieving the manufacturing of lightweight axles. Axle steel, like 42CrMo, is widely used in many types of axles and shafts; however, there is no existing research on rotary-swaged axle steel’s mechanical properties. It makes sense to carry out a comprehensive study on the effect of RS on the mechanical behaviors of axle steel rods. In this study, a 42CrMo steel rod was processed by RS through ten passes. The tensile properties, torsion properties, compression properties, and fatigue properties were tested. There was an overall improvement in the torsional and fatigue performance after RS. Combined with a finite element analysis (FEM), the uneven distribution of the dislocations and existence of the elongation material were inferred to have caused the different modes of the mechanical behaviors. Fracture surfaces were analyzed and the results showed that the fracture pattern had changed. There existed a competitive relation between the internal fatigue cracks and external cracks, which could be attributed to uneven strain hardening. This research proved the advantages of RS in the processing of axle parts, which mainly benefitted the torsional working conditions, and provided evidence for a new processing route for lightweight axles with RS.

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“…Due to its incremental character and favourable stress state, swaging is suitable also for processing of challenging materials, including composites, gradient materials, materials with low plasticity, pseudo-alloys, and oxide-dispersion-strengthened (ODS) materials (e.g. [11][12][13][14]). It can also be applied to (post-)process powder-based materials to improve the density, reduce/eliminate porosity, and increase the properties [2].…”

Section: Introductionmentioning

confidence: 99%

effect of oxidE dispersion on ELECTRic CONDUCTIVITY of rotary swaged powder-based copper composites

KUNČICKÁ,

BENČ,

KAČOR

et al. 2023

METAL Conference Proeedings

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Copper is a very popular electro-conductive material, however, the mechanical properties of pure Cu are low. They can be typically improved by (micro)alloying, or via structure modifications introduced by optimized deformation and thermomechanical treatments. Designing a Cu-based composite, possibly strengthened by a dispersion of fine oxides, is another way how to favourably improve the strength properties of Cu. In this study, we performed mechanical alloying of a Cu powder with a powder of Al2O3 oxide, which is known to have strengthening effects on metallic materials. After mixing, we sealed the powder mixture into evacuated tubular Cu containers (i.e. cans). As for the consolidation procedure, we applied direct consolidation of the canned powders via the intensive plastic deformation method of rotary swaging, performed under warm conditions. Subsequently, we subjected the swaged conductors to measurements of electric conductivity and detailed structure observations. The results revealed that the applied swaging ratio was sufficient to fully consolidate the canned powders as the final conductor was unrecognizable from a cast alloy from the viewpoints of visual and structure assessment. In other words, the structure did not exhibit any voids or remnants of unconsolidated powder particles. The observed fine grains with homogeneous dispersion of Al2O3 oxide particles provided improvement of the mechanical properties, as proven by microhardness measurements. Moreover, the electric properties remained favourable.

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Fatigue strength and microstructure evaluation of Al 7050 alloy wires recycled by spray forming, extrusion and rotary swaging

Cited by 18 publications

References 34 publications

Effect of Hot Deformation and Heat Treatment on the Microstructure and Properties of Spray-Formed Al-Zn-Mg-Cu Alloys

Effect of Hot Deformation and Heat Treatment on the Microstructure and Properties of Spray-Formed Al-Zn-Mg-Cu Alloys

Effect of Rotary Swaging on Mechanical Behaviors of Axle Steel Rod

effect of oxidE dispersion on ELECTRic CONDUCTIVITY of rotary swaged powder-based copper composites

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