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Effect of aging on microstructural development in an Al-Mg-Si alloy processed by high-pressure torsion

Title
Effect of aging on microstructural development in an Al-Mg-Si alloy processed by high-pressure torsion
Author
Megumi Kawasaki
Keywords
SEVERE PLASTIC-DEFORMATION; HIGH-TENSILE DUCTILITY; GRAIN-REFINEMENT; NANOSTRUCTURED METALS; HIGH-STRENGTH; EVOLUTION; NICKEL; ECAP; FLOW
Issue Date
2012-11
Publisher
SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Citation
JOURNAL OF MATERIALS SCIENCE 권: 47 호: 22 페이지: 7815-7820
Abstract
Experiments were conducted to evaluate the microstructural evolution in a commercial Al-0.6 % Mg-0.4 % Si alloy processed using high-pressure torsion for up to 20 turns. Disks of the alloy were tested in two different conditions: in a solution-treated condition and after a short aging treatment at 523 K. The results show that HPT processing introduces significant grain refinement through HPT processing including a reduction in grain size from similar to 150 A mu m to similar to 720 nm in 1 turn of HPT. The final grain size in this alloy was similar to 250 nm after 20 turns. Some tensile tests were conducted to evaluate the mechanical properties of the alloy at the solution treatment temperature. The results from these tests show that aging at 523 K leads to a small increase in ductility for all tensile samples with a maximum recorded elongation of similar to 230 %.
URI
http://link.springer.com.ssl.access.hanyang.ac.kr/article/10.1007%2Fs10853-012-6400-8http://hdl.handle.net/20.500.11754/42364
ISSN
0022-2461
DOI
10.1007/s10853-012-6400-8
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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