Physical and mechanical properties of 7075 sheets produced by EP electro- and electromagnetic cast rolling

Su, Xiaolu; Wang, S.J.; Ouyang, Xueqiong; Song, Pei; Xu, Guangming; Jiang, Darning

doi:10.1016/j.msea.2014.03.090

Cited by 27 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The compounds identified as Z1, are gerenally designated by lamellar eutectic M (often referred as η) and/or T (Al, Cu, Mg, Zn), which are cored by copper-rich outer rims as refered by Lim et al [24]. Moreover, the presence of these secondary phases is in accordance with the work of Su et al [25]. In the US treated samples, the lamellar eutectic Al-Cu are partially fragmented and adopt a more refined morphology (h ~ 6 m and w ~ 5 m) as presented in Fig.…”

Section: -Al Grainsupporting

confidence: 79%

Effect of grain and secondary phase morphologies in the mechanical and damping behavior of Al7075 alloys

et al. 2016

View full text Add to dashboard Cite

The present study evaluates the role of the microstructure in the static and dynamic mechanical behavior of as-cast Al7075 alloy promoted by ultrasonic treatment (US) during solidification. The characterization of samples revealed that US treatment promoted grain and intermetallics refinement, changed the shape of the intermetallic phases (equilibrium phases of soluble M and/or T (Al, Cu, Mg, Zn) and their insoluble Al-Cu-Fe compounds) and lead to their uniform distribution along the grain boundaries. Consequently, the mechanical properties and damping capacity above critical strain values were enhanced by comparison with values obtained for castings produced without US vibration. This results suggest that the grain and secondary phases refinement by US can be a promising solution to process materials to obtain high damping and high strength characteristics.

show abstract

Section: -Al Grainsupporting

confidence: 79%

Effect of grain and secondary phase morphologies in the mechanical and damping behavior of Al7075 alloys

et al. 2016

View full text Add to dashboard Cite

show abstract

“…∆G inter and ∆G strain are barriers to prevent oxide decomposition, while ∆G chem and ∆G EST provide a positive effect on oxide decomposition. Due to the ellipsoidal-like shape of oxides, ∆G EST can be briefly described as [25][26][27][28]:…”

Section: Characterization Of the Bonded Interfacementioning

confidence: 99%

Electromagnetic-Shocking-Induced Interface Healing and Mechanical Properties Improvement in Pre-Bonded Stainless Steel

Wu,

Chen,

Deng

et al. 2023

Metals

View full text Add to dashboard Cite

Hot-deformation pre-bonding is a newly developed method to avoid smelting defects in large stainless steel billets, in which the high-quality interfacial connection needs to be realized as a key guarantee. In this work, a novel electromagnetic shocking treatment (EST) method, as a special way to apply an external physical field, was proposed to introduce the hot-deformation pre-bonded austenitic stainless steel. It is demonstrated that EST can efficiently optimize the hot-deformation pre-bonded interface and restore the tensile properties of pre-bonded stainless steel within several seconds. The interface healing behaviors induced by EST were analyzed via the in situ observation of an optical micrograph, scanning electron micrograph, as well as electron backscattering diffraction. The optimization of the interface connection is mainly attributed to the fact that EST can act on the interface locally, leading to the healing of voids at the interface accompanied by a reduction in stress and the decomposition of oxide. In addition, EST plays another important role in adjusting the texture difference at both ends of the interface, which can further improve the mechanical properties. The results suggest that EST exhibits great potential in promoting the hot-deformation pre-bonding of large billets.

show abstract

“…Therefore, the liquid cavity in the cast-rolling area will deepen slightly as shown in Figure 9, but the overall change of the temperature field is not great. However, the EOF will make the circumfluence area in the cast-rolling area become larger as shown in Figure 10, and the area affected by the EOF will also be larger, thus the introduction of EOF accelerates the mass transfer and heat transfer in the cast-rolling area [33], which makes the distribution of solute field and flow field in the liquid cavity tend to be uniform. As can be seen from Figure 11, when the stable static magnetic field and pulse current is introduced in the TRC process simultaneously, the electromagnetic body force F will be generated in the cast-rolling region.…”

Section: Mechanism Of Eof In Trc Processmentioning

confidence: 99%

Mechanism of Electromagnetic Field in the Sub-RapidSolidification of High-Strength Al-Cu-Li Alloy Produced by Twin-Roll Casting

Wei

et al. 2021

Metals

View full text Add to dashboard Cite

In this work, a Al-Cu-Li alloy plate with outstanding mechanical properties was successfully prepared with electromagnetic twin-roll casting (TRC) technology. The microstructure of Al-Cu-Li alloy manufactured by conventional mold casting, TRC, and electromagnetic TRC was studied in detail. The action mechanism of electromagnetic oscillation field (EOF) in the TRC process was studied by systematic experimental characterization and numerical simulation. The results show that the EOF will enlarge the circumfluence area in the cast-rolling zone, accelerate the mass transfer and heat transfer in the molten pool, and make the solute field and flow field in the liquid cavity tend to be evenly distributed. Further, the introduction of the EOF will produce the electromagnetic body force F with the maximum strength of 14 N/m3. The F acting on the solidification front will eliminate the accumulation and deposition of Cu2+, Li+, Mg2+, Zn2+, Mn2+ at the dendrite tip and inhibit the growth of dendrites. At the same time, the F can refine the microstructure of the TRC plate, promote the formation of equiaxed crystals, improve the supersaturated solid solubility of solute elements in the a(Al) matrix, and avoid the appearance of obvious solute segregation area or the formation of excessive solute enrichment area. Therefore, the macro-segregation in TRC plate was significantly reduced, the solidification structure was dramatically refined, and the comprehensive properties of the alloy were remarkably improved.

show abstract

Physical and mechanical properties of 7075 sheets produced by EP electro- and electromagnetic cast rolling

Cited by 27 publications

References 22 publications

Effect of grain and secondary phase morphologies in the mechanical and damping behavior of Al7075 alloys

Effect of grain and secondary phase morphologies in the mechanical and damping behavior of Al7075 alloys

Electromagnetic-Shocking-Induced Interface Healing and Mechanical Properties Improvement in Pre-Bonded Stainless Steel

Mechanism of Electromagnetic Field in the Sub-RapidSolidification of High-Strength Al-Cu-Li Alloy Produced by Twin-Roll Casting

Contact Info

Product

Resources

About