Microstructure and Mechanical Properties of an AA1070 Wire Severely Deformed by Drawing Process

jeongdaehan,; Lee, Seong-Hee

doi:10.3740/mrsk.2020.30.6.308

Cited by 2 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found that tensile strength greatly decreased at annealing temperatures between 200 and 300℃, but electrical conductivity tended to increase gradually with the increase in annealing temperature. These changes in mechanical and electrical properties with increasing annealing temperature were well explained by observed changes in microstructures such as recovery and recrystallization [16]. However, the changes in the microstructure, mechanical properties and electrical properties of the AA1070 alloy with further wire-drawing process are not yet clear.…”

Section: Introductionmentioning

confidence: 88%

“…The material used in this study is commercial AA1070 alloy with the chemical composition shown in Table 1. The starting material is Al wire with a diameter of 2 mm taken from the drawing process in the previous study [16].…”

Section: Methodsmentioning

confidence: 99%

“…In addition, AA1070 alloy has the relatively high electrical conductivity of 62%IACS [15]. The authors have previously studied the microstructure and mechanical properties of AA1070 wire severely deformed by the wire drawing process and subsequently annealed [16]. It was found that tensile strength greatly decreased at annealing temperatures between 200 and 300℃, but electrical conductivity tended to increase gradually with the increase in annealing temperature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Changes in Microstructure, Mechanical and Electrical Properties with Progress of Cold Wire-Drawing for AA1070

Jo,

Lee

2023

Korean J. Met. Mater.

Self Cite

View full text Add to dashboard Cite

Commercial AA1070 alloy for electrical wire is severely deformed by the drawing process when a rod with a diameter of 2 mm is greatly reduced to 0.4 mm by multi-pass. Changes in the microstructure, mechanical properties, and electrical properties of the Al alloy during the wire-drawing process were investigated in detail. The as-drawn Al wires showed a deformation structure in which the grains are greatly elongated in the drawing direction, even though recovery and/or partial recrystallization occurred more actively in the specimens which had more than 84% in reduction of cross-sectional area (RA). In addition, the fraction of high angle grain boundaries tended to increase with the increase of RA. For all drawn specimens, the fiber texture of the {110}<111> and {112}<111> components was mainly developed, and their maximum intensity tended to increase with increasing RA. Recrystallization texture of (001)[100] and (110)[001] began to appear at an RA higher than 84%. The hardness tended to increase with increasing RA due to work hardening. In particular, increasing RA to 84% resulted in a great rise in hardness, accompanied by a distinct non-uniformity in hardness in the thickness direction. However, the average hardness hardly changed at RA above 84%, even when RA was increased to 96%. The strength also tended to increase stepwise as RA increased, very similar to the change in hardness. The specimen with an RA of 93% showed the highest tensile strength of 192 MPa, 2.8 times higher than that of the specimen before drawing. The electric conductivity did not decrease significantly, even with extreme increases in RA, and remained at an average value of 61.6 %IACS.

show abstract

Section: Introductionmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in Microstructure, Mechanical and Electrical Properties with Progress of Cold Wire-Drawing for AA1070

Jo,

Lee

2023

Korean J. Met. Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

Changes in Microstructure, Mechanical Properties, and Electrical Conductivity of Severely Drawn AA1070 Wire with Annealing

Jo,

Lee

2024

Korean J. Met. Mater.

View full text Add to dashboard Cite

The drawing process severely deforms commercial AA1070 alloy for electrical wire, reducing a rod from a diameter of 2.0 mm to 0.4 mm, followed by annealing. The annealing process was conducted at various temperatures ranging from 200℃ to 450℃, with each temperature maintained for 1hour. The effects of increasing annealing temperature on the microstructure, mechanical properties, and electrical properties of the Al wire were investigated in detail. The drawn Al wire showed a severely deformed microstructure and fiber texture that {110}<111> and {112}<111> components strongly developed. As the annealing temperature increased, the deformation structure changed into recrystallization structure over all regions. However, the fiber texture still strongly remained even in the specimens annealed at higher temperatures. The hardness decreased with increasing annealing temperature due to the occurrence of recovery and/or recrystallization. The strength also continued to decrease as the annealing temperature increased. However, elongation gradually increased with increase of annealing temperature to 250℃; above 275℃, it increased particularly sharply. The electric conductivity tended to increase slightly with increasing annealing temperature, reaching a maximum value of 62.2%IACS at 300℃. Changes in microstructure, mechanical properties and electrical conductivity with annealing of commercially drawn AA1070 were compared with those of the previous study.

show abstract

Microstructure and Mechanical Properties of an AA1070 Wire Severely Deformed by Drawing Process

Cited by 2 publications

References 5 publications

Changes in Microstructure, Mechanical and Electrical Properties with Progress of Cold Wire-Drawing for AA1070

Changes in Microstructure, Mechanical and Electrical Properties with Progress of Cold Wire-Drawing for AA1070

Changes in Microstructure, Mechanical Properties, and Electrical Conductivity of Severely Drawn AA1070 Wire with Annealing

Contact Info

Product

Resources

About