The Effect of Thermomechanical Process on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid

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JAFARI HAMED; RABIEE SAYED MAHMOOD; HOSSEINIPOUR SEYED JAMAL

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Journal: JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES Year:2019 | Volume:8 | Issue:3 Page(s): 21-30

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Title

The Effect of Thermomechanical Process on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid

Author(s)

JAFARI HAMED | RABIEE SAYED MAHMOOD | HOSSEINIPOUR SEYED JAMAL | Issue Writer Certificate

Keywords

ThermomechanicalQ1

Corrosion rateQ3

AZ31 alloyQ1

MicrostructureQ2

Abstract

Magnesium alloys, with suitable strength, human-like elastic modulus and density, have potential medical applications in the field of biodegradable implant materials. However, one of the most important barriers to clinical applications of magnesium alloys is the rapid corrosion of these alloys in human body fluids. Grain refinement is an effective way to increase the strength and ductility of magnesium alloys and may improve the corrosion resistance of them. Grain refinement due to the Thermomechanical process is an effective way to increase the strength and ductility of magnesium alloys and may affect the corrosion resistance of magnesium alloys. Hence, in this study, the effect of Thermomechanical process (including warm forging at 250 ° C and then annealing for 1 hour at 300 ° C) on the corrosion behaviour of AZ31 magnesium alloy after 1, 4 and 7 days of immersion in a simulated body fluid was investigated at 25 ° C. To investigate the Microstructure of the samples, an optical and scanning electron microscopes were used. The electrochemical polarization and impedance tests were used to evaluate Corrosion rate and corrosion resistance, respectively. The Microstructure analysis of the samples showed that the Thermomechanical process refined the grain and caused the twins to appear. In fact, the recrystallization resulting from the Thermomechanical process caused the grain to refine, increasing the grain boundaries, and reducing the dislocations density, which, in turn, prevented corrosion. The results of impedance and polarization tests also showed that the corrosion resistance of AZ31 sample under Thermomechanical operation increased after 7 days of immersion and decreased its Corrosion rate.

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APA: Copy

JAFARI, HAMED, RABIEE, SAYED MAHMOOD, & HOSSEINIPOUR, SEYED JAMAL. (2019). The Effect of Thermomechanical Process on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid. JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES, 8(3 ), 21-30. SID. https://sid.ir/paper/252476/en

Vancouver: Copy

JAFARI HAMED, RABIEE SAYED MAHMOOD, HOSSEINIPOUR SEYED JAMAL. The Effect of Thermomechanical Process on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid. JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES[Internet]. 2019;8(3 ):21-30. Available from: https://sid.ir/paper/252476/en

IEEE: Copy

HAMED JAFARI, SAYED MAHMOOD RABIEE, and SEYED JAMAL HOSSEINIPOUR, “The Effect of Thermomechanical Process on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid,” JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES, vol. 8, no. 3 , pp. 21–30, 2019, [Online]. Available: https://sid.ir/paper/252476/en

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