Effect of extrusion ratio on mechanical and corrosion properties of AZ31B alloys prepared by a solid recycling process

2011 ◽  
Vol 32 (5) ◽  
pp. 2742-2748 ◽  
Author(s):  
Tielei Zhang ◽  
Zesheng Ji ◽  
Shuyan Wu
Keyword(s):  
Extrusion Ratio ◽  
Recycling Process ◽  
Corrosion Properties ◽  
Mechanical And Corrosion Properties

scholarly journals Zn-Mg Biodegradable Composite: Novel Material with Tailored Mechanical and Corrosion Properties

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3930 ◽  
Author(s):  
Jiří Kubásek ◽  
Drahomír Dvorský ◽  
Jaroslav Čapek ◽  
Jan Pinc ◽  
Dalibor Vojtěch
Keyword(s):  
Mechanical Properties ◽  
Healing Process ◽  
Extrusion Ratio ◽  
Tensile Yield Strength ◽  
Corrosion Properties ◽  
Biodegradable Composite ◽  
Initial Stage ◽  
Novel Material ◽  
Mechanical And Corrosion Properties ◽  
Cytotoxicity Effects

Zinc-based alloys represent one of the most highly developed areas regarding biodegradable materials. Despite this, some general deficiencies such as cytotoxicity and poor mechanical properties (especially elongation), are not properly solved. In this work, a Zn-5Mg (5 wt.% Mg) composite material with tailored mechanical and superior corrosion properties is prepared by powder metallurgy techniques. Pure Zn and Mg are mixed and subsequently compacted by extrusion at 200 °C and an extrusion ratio of 10. The final product possesses appropriate mechanical properties (tensile yield strength = 148 MPa, ultimate tensile strength = 183 MPa, and elongation = 16%) and decreased by four times the release of Zn in the initial stage of degradation compared to pure Zn, which can highly decrease cytotoxicity effects and therefore positively affect the initial stage of the healing process.

scholarly journals Microstructures, Mechanical and Corrosion Properties of the Extruded AZ31-xCaO Alloys

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1467 ◽  
Author(s):  
Yalin Lu ◽  
Yang Zhang ◽  
Mengqi Cong ◽  
Xingcheng Li ◽  
Wenting Xu ◽  
...  
Keyword(s):  
Grain Size ◽  
Tensile Testing ◽  
Az31 Alloy ◽  
Extrusion Process ◽  
Extrusion Ratio ◽  
Extrusion Temperature ◽  
Corrosion Properties ◽  
Mechanical And Corrosion Properties ◽  
Addition Amount ◽  
Scanning Electron

The effects of the extrusion process and CaO addition amount on microstructure, mechanical, and corrosion properties of AZ31 alloys were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), standard tensile testing, and so on. The grain size of AZ31 or AZ31-1%CaO alloy becomes larger with increasing extrusion temperature. The grain size of AZ31-1%CaO alloy is much smaller than that of AZ31 alloy at the same extrusion temperature. In addition, the formation of the Al2Ca phase caused by CaO addition refines the grain size, and the recrystallization of AZ31-1%CaO alloy is improved significantly. The recrystallization grains distribute more uniformly as the increase of extrusion ratio, and the completely recrystallized grains distribute uniformly in the form of equiaxed crystals with an extrusion ratio of 9. Tensile testing results show that extruded AZ31-1%CaO alloy at the extrusion temperature of 300 °C and an extrusion ratio of 9 exhibits the best mechanical properties. While corrosion properties of AZ31 alloys decreases due to the addition of CaO.

On the defects of enamel coatings

2019 ◽  
pp. 145-150
Author(s):  
T. O. Soshina ◽  
V. R. Mukhamadyarovа
Keyword(s):  
Heat Treatment ◽  
Surface Tension ◽  
Electron Microscope ◽  
Enamel Coating ◽  
Surface Defects ◽  
Linear Expansion ◽  
Corrosion Properties ◽  
Treatment Conditions ◽  
Mechanical And Corrosion Properties ◽  
Coefficient Of Linear Expansion

The defects destroy the integrity of the enamel, and the paper examines the influence of the physical-mechanical and corrosion properties of frits and heat treatment on the defectiveness of the enamel coating. The surface defects were scanned by electron microscope. It has been established that the defectiveness of enamel coatings depends on the melting index, temperature coefficient of linear expansion, surface tension of the frits, and heat treatment conditions. When burning rate of the enamel coating decreases, the fine-meshed structure of the enamel changes, and the size of the defects decreases.

scholarly journals Microstructure and mechanical and corrosion properties of hot-extruded Mg–Zn–Ca–(Mn) biodegradable alloys

2020 ◽  
Author(s):  
V.E. Bazhenov ◽  
A.V. Li ◽  
A.A. Komissarov ◽  
A.V. Koltygin ◽  
S.A. Tavolzhanskii ◽  
...  
Keyword(s):  
Corrosion Properties ◽  
Mechanical And Corrosion Properties

Spark plasma sintering of Ti6Al4V metal matrix composites: Microstructure, mechanical and corrosion properties

2021 ◽  
Vol 865 ◽  
pp. 158875
Author(s):  
Neera Singh ◽  
Raghunandan Ummethala ◽  
Phani Shashanka Karamched ◽  
Rathinavelu Sokkalingam ◽  
Vasanth Gopal ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Spark Plasma Sintering ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Corrosion Properties ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Mechanical And Corrosion Properties
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