Corrosion fatigue of a magnesium alloy under appropriate human physiological conditions for bio-implant applications

Shervin Eslami Harandi; R. K. Singh Raman

doi:10.1016/j.engfracmech.2017.09.031

Corrosion fatigue of a magnesium alloy under appropriate human physiological conditions for bio-implant applications

Shervin Eslami Harandi, R. K. Singh Raman

Research output: Contribution to journal › Article › Research › peer-review

39 Citations (Scopus)

Abstract

This paper presents investigation of fatigue strength of a common magnesium (Mg) alloy, AZ91D, in air and Hanks’ solution under appropriate mechano-chemical conditions (namely, properly simulated loading and frequency, and in the presence of bovine serum albumin (BSA) at 37 °C). Fatigue cracks initiated from inclusions when tested in air and from corrosion pits when tested in Hanks’ solutions. However, at constant stress levels lower than fatigue limit in air, the alloy tested in Hanks’ solution + BSA indicated longer fatigue strength than the alloy tested in the plain Hanks’ solution which was attributed to the influence of adsorbed BSA on corrosion and corrosion fatigue (CF) crack propagation of the alloy.

Original language	English
Pages (from-to)	134-142
Number of pages	9
Journal	Engineering Fracture Mechanics
Volume	186
DOIs	https://doi.org/10.1016/j.engfracmech.2017.09.031
Publication status	Published - 1 Dec 2017

Keywords

Bovine serum albumin
Corrosion fatigue
Magnesium alloys
Three-point bending

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10.1016/j.engfracmech.2017.09.031

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title = "Corrosion fatigue of a magnesium alloy under appropriate human physiological conditions for bio-implant applications",

abstract = "This paper presents investigation of fatigue strength of a common magnesium (Mg) alloy, AZ91D, in air and Hanks{\textquoteright} solution under appropriate mechano-chemical conditions (namely, properly simulated loading and frequency, and in the presence of bovine serum albumin (BSA) at 37 °C). Fatigue cracks initiated from inclusions when tested in air and from corrosion pits when tested in Hanks{\textquoteright} solutions. However, at constant stress levels lower than fatigue limit in air, the alloy tested in Hanks{\textquoteright} solution + BSA indicated longer fatigue strength than the alloy tested in the plain Hanks{\textquoteright} solution which was attributed to the influence of adsorbed BSA on corrosion and corrosion fatigue (CF) crack propagation of the alloy.",

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AU - Singh Raman, R. K.

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N2 - This paper presents investigation of fatigue strength of a common magnesium (Mg) alloy, AZ91D, in air and Hanks’ solution under appropriate mechano-chemical conditions (namely, properly simulated loading and frequency, and in the presence of bovine serum albumin (BSA) at 37 °C). Fatigue cracks initiated from inclusions when tested in air and from corrosion pits when tested in Hanks’ solutions. However, at constant stress levels lower than fatigue limit in air, the alloy tested in Hanks’ solution + BSA indicated longer fatigue strength than the alloy tested in the plain Hanks’ solution which was attributed to the influence of adsorbed BSA on corrosion and corrosion fatigue (CF) crack propagation of the alloy.

AB - This paper presents investigation of fatigue strength of a common magnesium (Mg) alloy, AZ91D, in air and Hanks’ solution under appropriate mechano-chemical conditions (namely, properly simulated loading and frequency, and in the presence of bovine serum albumin (BSA) at 37 °C). Fatigue cracks initiated from inclusions when tested in air and from corrosion pits when tested in Hanks’ solutions. However, at constant stress levels lower than fatigue limit in air, the alloy tested in Hanks’ solution + BSA indicated longer fatigue strength than the alloy tested in the plain Hanks’ solution which was attributed to the influence of adsorbed BSA on corrosion and corrosion fatigue (CF) crack propagation of the alloy.

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KW - Three-point bending

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Corrosion fatigue of a magnesium alloy under appropriate human physiological conditions for bio-implant applications

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Corrosion fatigue of a magnesium alloy under appropriate human physiological conditions for bio-implant applications

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