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Effect of Solution Pretreatment on Homogeneity and Corrosion Resistance of Biomedical Mg–Zn–Ca Alloy Processed by High Pressure Torsion
Author(s) -
Zhang Congzheng,
Guan Shaokang,
Wang Liguo,
Zhu Shijie,
Wang Jun,
Guo Ruiming
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600326
Subject(s) - alloy , materials science , indentation hardness , corrosion , torsion (gastropod) , homogeneity (statistics) , metallurgy , homogeneous , 6111 aluminium alloy , microstructure , surgery , medicine , statistics , mathematics , physics , thermodynamics
Orthopedic Mg–Zn–Ca alloy is prepared by solution pretreatment and then processed by high pressure torsion (HPT). The results show that the second phases in solution treated (ST) alloy processed by HPT disperse uniformly. While the second phases in HPT‐treated cast alloy without solution pretreatment are not completely fragmented and distributed non‐uniformly. After five revolutions, the grain refinement is completed. The microhardness of the alloys is significantly improved after HPT, and the microhardness distribution is homogeneous in HPT‐treated ST alloy. The corrosion resistance of HPT‐treated ST alloy is more excellent than that of HPT‐treated cast alloy in physiological environment.