Microstructure and mechanical properties of a spray formed and extruded AA7050 recycled alloy

Godinho, Henrique A.; Beletati, André L.R.; Giordano, Enrico J.; Bolfarini, Claudemiro

doi:10.1016/j.jallcom.2012.12.122

Cited by 51 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[2] Several types of alloys such as steels, cast irons, Ni-alloys, Al-alloys, and Cu-alloys, as well as different geometries (billets, tubes, and rings) have been successfully produced by spray-forming. [3][4][5][6][7][8][9][10][11][12][13][14] In all cases, the spray-formed microstructures present noticeable features: (1) equiaxed grains with diameters from 10 to 50 lm; (2) a high level of microstructural homogeneity and macrosegregation free; (3) uniform and homogeneous distribution of eutectic and second phases. The advantageous microstructure produced by the spray-forming process is well-known from research; however, solidification at the deposition zone and the creation of such a characteristic microstructure are still an open discussion.…”

Section: Introductionmentioning

confidence: 99%

Solidification Sequence of Spray-Formed Steels

Zepon

Ellendt

Uhlenwinkel

et al. 2015

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

Solidification in spray-forming is still an open discussion in the atomization and deposition area. This paper proposes a solidification model based on the equilibrium solidification path of alloys. The main assumptions of the model are that the deposition zone temperature must be above the alloy's solidus temperature and that the equilibrium liquid fraction at this temperature is reached, which involves partial remelting and/or redissolution of completely solidified droplets. When the deposition zone is cooled, solidification of the remaining liquid takes place under near equilibrium conditions. Scanning electron microscopy (SEM) and optical microscopy (OM) were used to analyze the microstructures of two different spray-formed steel grades: (1) boron modified supermartensitic stainless steel (SMSS) and (2) D2 tool steel. The microstructures were analyzed to determine the sequence of phase formation during solidification. In both cases, the solidification model proposed was validated.

show abstract

Section: Introductionmentioning

confidence: 99%

Solidification Sequence of Spray-Formed Steels

Zepon

Ellendt

Uhlenwinkel

et al. 2015

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

show abstract

“…Godinho et al [54] investigated about the mechanical properties of a spray formed and extruded AA7050 recycled alloy. It will add value to the use of machining chips and can be used in the recycling chain of casting industry without adding value.…”

Section: Mechanical Behaviour Of the Spray Deposited Al-alloysmentioning

confidence: 99%

Characterization of spray formed Al-alloys — A Review

Reddy

Maity

Pandey

2019

Reviews on Advanced Materials Science

View full text Add to dashboard Cite

A review on the characterization of mechanical, metallurgical, porosity, tribological and corrosion properties of spray deposited Al-alloys are presented in this paper. Al-alloys are potentially used in various applications specifically in bearing materials, aerospace due to low weight to high strength, proper lubrication, excellent wear and corrosion resistance. Al alloys being processed through spray forming technology, which possesses lower processing steps than the other conventional methods like ingot and powder metallurgy. Characterization of Al alloys spray deposits is carried out before and after mechanical processes to know their behaviour. Reviewed the characterization deportment of Al-alloys before and after spray deposition, effect of mechanical process like cold rolling, extrusion, aging, hot rolling, hot extrusion etc. and porosity on the metallurgical, hardness, tensile strength, elongation, tribological and corrosion properties.

show abstract

“…In recent years, spray forming has been widely used to design and prepare various high-performance alloys. For instance, FGH95 superalloy [4], AA7050 alloy [5], Al−50Si (wt%) alloy [6], and Cu−11.85Al−3.2Ni−3Mn (wt%) shape memory alloy [7] exhibit fine and uniform microstructures as well as good mechanical properties when prepared by spray forming.…”

Section: Introductionmentioning

confidence: 99%

Simulation of jet-flow solid fraction during spray forming

Lü

et al. 2017

Int J Miner Metall Mater

View full text Add to dashboard Cite

A numerical model was developed to simulate the jet-flow solid fraction of W18Cr4V high-speed steel during spray forming. The whole model comprises two submodels: one is an individual droplet model, which describes the motion and thermal behaviors of individual droplets on the basis of Newton's laws of motion and the convection heat transfer mechanism; the other is a droplet distribution model, which is used to calculate the droplet size distribution. After being verified, the model was used to analyze the effects of parameters, including the initial gas velocity, deposition distance, superheat degree, and the ratio of gas-to-metal mass flow rates, on the jet-flow solid fraction. Finally, an equation to predict the jet-flow solid fraction directly and conveniently according to the parameters was presented. The values predicted by the equation show good agreement with those calculated by the numerical model.

show abstract

Microstructure and mechanical properties of a spray formed and extruded AA7050 recycled alloy

Cited by 51 publications

References 17 publications

Solidification Sequence of Spray-Formed Steels

Solidification Sequence of Spray-Formed Steels

Characterization of spray formed Al-alloys — A Review

Simulation of jet-flow solid fraction during spray forming

Contact Info

Product

Resources

About