Enhanced Wear Resistivity of a Zr-based Bulk Metallic Glass Processed by High-Pressure Torsion Under Reciprocating Dry Conditions

Soo-Hyun Joo; Dong-Hai Pi; Jing Guo; Hidemi Kato; Sunghak Lee; Hyoung Seop Kim

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자료유형: 학술저널

저자정보: Soo-Hyun Joo (Tohoku University) Dong-Hai Pi (Yanbian University of Science and Technology) Jing Guo (Shandong Agricultural University) Hidemi Kato (Tohoku University) Sunghak Lee (Pohang University of Science and Technology) Hyoung Seop Kim (Pohang University of Science and Technology)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.22 No.3

발행연도: 2016.1

수록면: 383 - 390 (8page)

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Wear properties of bulk metallic glasses (BMGs) are important for industrial applications as much as strength and ductility. Free volume of BMGs is a significant factor which decides wear mechanism and resistance. Increased free volume of a Zr55Al10Ni5Cu30 BMG processed by high-pressure torsion (HPT) affected wear resistance under dry reciprocating conditions. Two- and three-body abrasive wear as well as the delamination of oxide layers simultaneously operated during the wear tests of both as-cast and HPT-processed BMG (HPT-BMG). However, the HPT- BMG had a larger area of the oxide layers on a worn surface compared to the as-cast BMG at the early stage of the wear tests. The increased free volume by the HPT process resulted in ductile plastic deformation, prohibited crack propagation, and delayed delamination of the oxide layers. Therefore, the HPT-BMG had thicker oxide layers, which acted as an adequate protection and increased wear properties of the Zr-based BMG.

참고문헌 (52)

참고문헌 신청

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윤성춘 / 2014 / 순철분말을 혼합한 철계 비정질분말 코어의 성형성과 자기적특성 연구 / 대한금속·재료학회지 52(8):649~655

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