Mechanical properties and biodegradability of Mg–Zn–Ca alloys: homogenization heat treatment and hot rolling     
Yazarlar (2)
Doç. Dr. Alper İNCESU Karabük Üniversitesi, Türkiye
Prof. Dr. Ali GÜNGÖR Karabük Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
Dergi ISSN 0957-4530 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 12-2020
Cilt No 31
Sayı 12
Sayfalar 1 / 12
DOI Numarası 10.1007/s10856-020-06468-5
Makale Linki http://dx.doi.org/10.1007/s10856-020-06468-5
Özet
In this study, Mg was alloyed with Zn and Ca to produce six different Mg-Zn-Ca alloys (designated as ZX alloys) by the gravity die casting method. Zn contents of the alloys were 1 wt., 3 wt., and 5 wt.% and Ca contents of the alloys were 0.2 wt. and 1.8 wt.%. Homogenization heat treatment was applied to all cast alloys. After that, a part of each homogenization heat-treated alloys was hot-rolled. Microstructure, mechanical properties, electrochemical and immersion corrosion behaviors at simulated physiological conditions of the heat-treated and hot-rolled alloys were compared. Increasing the amount of alloying elements (Zn and Ca) in Mg reduces grain size and improves the hardness. It was seen that the microstructure consisted of α-Mg as a matrix phase and intermetallic phases: MgCa phase for the alloy having Zn/Ca = 0.37 (ZX12) and CaMgZn phase for the other alloys. When the mechanical properties and corrosion rates of homogenized and hot-rolled alloys were compared, it was seen that hot-rolled ZX10-h (Mg-0.94Zn-0.16Ca) alloy can be considered as a fracture bone fixation plate material with its acceptable properties: 121 ± 2.1 MPa yield strength, 226 ± 3.7 MPa tensile strength, % 4.1 ± 0.2 elongation, and 0.062 mm/year immersion corrosion rate.
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