Copper content and cooling rate effects over second phase particles behavior in industrial aluminum–silicon alloy 319

García‐García, Gema; Espinoza-Cuadra, J.; Mancha-Molinar, H.

doi:10.1016/j.matdes.2005.09.021

Cited by 48 publications

(30 citation statements)

References 14 publications

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“…Liu and Kang [16] stated that the presence of Mg 2 Si particles increases with increasing Mg alloying. For higher magnesium alloys (about 2.0 wt pctMg and 0.5 wt pctSi), these authors reported the occurrence not only of a binary eutectic structure (a-Al + Mg 2 Si) but also of a ternary eutectic (a-Al + Mg 2 Si + Al 15 Si 2 (FeMn) 3 ). According to this study, this is associated with the segregation of iron and manganese to the last solidified zone.…”

Section: Introductionmentioning

confidence: 95%

“…In general, aluminum alloys have favorable characteristics such as good formability, weldability, machinability, reasonable corrosion resistance, and excellent castability. [1][2][3][4][5][6] The automotive industry has increased recently the production of aluminum alloy castings for engine blocks and cylinder heads. [7] Al-Mg alloys exhibit moderate-to-high strengths and toughness properties.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Dendritic Microstructure, Intermetallic Phases, and Hardness of Directionally Solidified Al-Mg and Al-Mg-Si Alloys

Brito

Costa

Vida

et al. 2015

Metall Mater Trans A

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Despite the widespread application of Al-Mg-Si alloys, especially in the automotive industry, interrelations of solidification thermal parameters (cooling rate and growth rate), microstructure, and hardness are not properly established. For instance, the control of the scale of the microstructure on both Al-Mg and Al-Mg-Si alloys by adequate pre-programming of the solidification thermal parameters remains a task to be accomplished. In the present study, the directional solidification (DS) of these alloys under unsteady-state solidification conditions is investigated in an attempt to characterize the evolution of microstructural features, macrosegregation, and hardness as a function of local solidification thermal parameters along the DS castings length. Silicon addition to the Al-Mg alloy was found not to affect the sizes of primary and secondary dendrite arm spacings, but induced the onset of tertiary dendritic branches and affected also the size and distribution of intermetallic particles within the interdendritic regions. The Al-Mg-Si alloy is characterized by a more complex arrangement of phases, including binary (a-Al + Mg 2 Si) and refined ternary (a-Al + Mg 2 Si + AlFe(Si) eutectic mixtures. As a consequence, a higher Vickers hardness profile is shown to be associated with the ternary Al-Mg-Si alloy DS casting. For both alloys examined, hardness is shown to increase with the increase in the microstructural spacing according to Hall-Petch type equations.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Characterization of Dendritic Microstructure, Intermetallic Phases, and Hardness of Directionally Solidified Al-Mg and Al-Mg-Si Alloys

Brito

Costa

Vida

et al. 2015

Metall Mater Trans A

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“…The addition of alloying elements (such as Mn, Co, Cr, Sr, Be or Ca) to the A357 is one of the most used techniques to modify the shape of these precipitates [16,17]. However, recent studies have shown that higher cooling rates, compatible with those of LPBF, also produce the change in the morphology of the eutectic Si and Fe-rich particles [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Process and Post-Process Conditions on the Mechanical Properties of an A357 Alloy Produced via Laser Powder Bed Fusion

Aversa

Lorusso

Trevisan

et al. 2017

Metals

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A357 samples were realized by laser powder bed fusion (LPBF) on building platforms heated up to different temperatures. The effect of the preheating temperature and of the post processing heat treatment on the microstructure and the mechanical properties of the samples was studied. It was demonstrated that building platform heating can act as an in situ ageing heat treatment following the fast cooling that arises during laser scanning. A 17% higher ultimate tensile strength was achieved by the selection of the optimum building platform temperature. Moreover, the possibility to further increase the mechanical properties by means of a direct ageing heat treatment was investigated.

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“…Fe can form a ternary eutectic at Al-11.5% Si-0.8% Fe. However, Fe segregates during solidification when Fe is more than >0.5 wt.%, which causes the formation of large acicular ␤-Fe [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Improved mechanical properties in cast Al–Si alloys by combined alloying of Fe and Cu

Wang¹,

Hui²,

Wang³

et al. 2010

Materials Science and Engineering: A

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Copper content and cooling rate effects over second phase particles behavior in industrial aluminum–silicon alloy 319

Cited by 48 publications

References 14 publications

Characterization of Dendritic Microstructure, Intermetallic Phases, and Hardness of Directionally Solidified Al-Mg and Al-Mg-Si Alloys

Characterization of Dendritic Microstructure, Intermetallic Phases, and Hardness of Directionally Solidified Al-Mg and Al-Mg-Si Alloys

Effect of Process and Post-Process Conditions on the Mechanical Properties of an A357 Alloy Produced via Laser Powder Bed Fusion

Improved mechanical properties in cast Al–Si alloys by combined alloying of Fe and Cu

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