Effect of melt temperature, cleanout cycle, continuous casting direction (horizontal / vertical) and super-cooler size on tensile strength, elongation percentage and microstructure of continuous cast copper alloys

Bagherian, Ehsaan-Reza; Fan, Yongchang; Cooper, Mervyn; Frame, Brian; Abdolvand, Amin

doi:10.1051/metal/2016030

Cited by 5 publications

(2 citation statements)

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“…[33] This trend was also noted in CC steel literature [34] and in the authors' previous CC copper work. [10] The smallest depression depth, however, was observed for setting d at 0.04 ± 0.007 mm. This setting showed a smaller pitch length (0.008 ± 0.0006 m) than settings a or b, which indicated a proportional relationship between depression depth and pitch length, as also observed in steel CC literature.…”

Section: B Pulse Mark Defects In Response To Casting Motionmentioning

confidence: 86%

“…They are formed as a result of the withdrawal motions and, if severe, can lead to cracking and unwanted particle entrapment. [2] Within the author's previous work, pulse mark formation was noted on VUCC aluminum-bronze (Cu 89wt pct Al 10wt pct Fe 1wt pct ), where the inclusion of pushback motion produced shallower marks, [10] enabling reduced fracturing and higher tensile loads.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of Periodic Centerline Porosity and Pulse Marks by CFD and Experimentation for Continuously Cast Copper

Jones

Russell

Abdullah

et al. 2022

Metall Mater Trans B

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For 8 mm OFCu rod, the formation of pulse mark defects on the exterior of the rod and periodic macroporosity (> 1 mm diameter pores) occurring internally along the centerline of the castings have been observed and noted to limit the maximum attainable withdrawal rates (~ 4 m/s). Conversely, the same casting defects have been witnessed for slower rates; therefore, investigations were performed to investigate how the casting motions (withdrawal, dwell, and pushback) formed these defects and could be prevented. Characterization of the physical properties of the cast rods by tensile testing and analysis by optical and computed tomography (CT) imaging revealed correlations to the outer pitch length marks on the rods and confirmed relationships to casting motions and pitch lengths evaluated from metallurgical equations. Computational fluid dynamic modeling using Ansys Fluent v.R1 was applied to quantify the localized formation and dissipation of periodic hotspots internally within the die for the different motions. A mechanism leading to periodic porosity was identified, which was irrespective of the average casting withdrawal rates and enabled prediction of the location, frequency, and magnitude of the macroporosity defect.

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Section: B Pulse Mark Defects In Response To Casting Motionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%