TORSIONAL SEVERE PLASTIC DEFORMATION METHOD FOR METAL BAR, EMPLOYING SURFACE POLISHING TO IMPROVE MECHANICAL PROPERTIES OF METAL BAR

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United States of America

APP PUB NO 20200009631A1
SERIAL NO

16495394

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Abstract

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The present invention relates to a torsional severe plastic deformation method for a metal bar to which surface polishing is applied to the metal bar to improve the mechanical properties of the metal bar. According to an embodiment of the present invention, there is provided a torsional severe plastic deformation method for a metal bar, which includes: applying torsion to a metal bar; and removing a surface defect on the surface of the metal bar, the surface defect being caused by the applying of torsion, wherein the removing of the surface defect is carried out in a continuous manner in which the removing of the surface defect is performed together with the applying of torsion or in a discontinuous manner in which the applying of torsion is temporarily stopped and then the applying of torsion is performed, and the removing of a surface defect increases the amount of torsional rotation or the shear strain applied to the metal bar.

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Patent Owner(s)

Patent OwnerAddress
POSTECH ACADEMY-INDUSTRY FOUNDATIONSAN 31 HYOJA-DONG NAM-KU KYUNGSANGBUK-DO POHANG-CITY 790-784

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
BAEK, Seung-mi Incheon, KR 2 2
KIM, Hyoung-seop Pohang-si, KR 5 0
MOON, Ji-hyun Cheonan-si, KR 56 889
UM, Ho-yong Incheon, KR 3 0
YOON, Jae-ik Pohang-si, KR 1 0

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