Effect of Ultrasonic Surface Impact on the Fatigue Behavior of Ti-6Al-4V Subject to Simulated Body Fluid

A fretting fatigue test method in a simulated body fluid is shown to evaluate fatigue properties of metallic materials which are used in the orthopaedics field. Next, fatigue/fretting fatigue behavior in a simulated body fluid is given for 316L stainless steel, Ti-6% Al-4% V alloy, pure Ti for industrial use and Co-Cr-Mo alloy. Finally, we discuss the relationship between the tensile strength and the fatigue strength/fretting fatigue strength of metallic biomaterials at 107 cycles in air and in a simulated body fluid. For all of the biomaterials tested, the fatigue strength at 107 cycles is similar in air and in a simulated body fluid. The fatigue strength is closely correlated to the tensile strength: The fatigue strength increases with increasing tensile strength. However, a correlation is not observed between the fretting fatigue strength at 107 cycles and the fatigue strength or the tensile strength.

Download Full-text

In vitro corrosion-fatigue behavior of biodegradable Mg/HA composite in simulated body fluid

Journal of Magnesium and Alloys ◽

10.1016/j.jma.2021.03.027 ◽

2021 ◽

Author(s):

E. Ghazizadeh ◽

A.H. Jabbari ◽

M. Sedighi

Keyword(s):

Simulated Body Fluid ◽

Corrosion Fatigue ◽

Body Fluid ◽

Fatigue Behavior

Download Full-text

Fatigue behavior after pre‐corroded in a simulated body fluid for ZK60 magnesium alloy prepared by micro‐arc oxidation

Fatigue & Fracture of Engineering Materials & Structures ◽

10.1111/ffe.13596 ◽

2021 ◽

Author(s):

Ying Xiong ◽

Yi Yu ◽

Jie Yang

Keyword(s):

Magnesium Alloy ◽

Simulated Body Fluid ◽

Body Fluid ◽

Fatigue Behavior ◽

Micro Arc Oxidation ◽

Zk60 Magnesium Alloy

Download Full-text

Effect of pre-corroded on fatigue behavior of MAO treated ZK60 magnesium alloy in a simulated body fluid

10.22541/au.161879122.25797753/v1 ◽

2021 ◽

Author(s):

Ying Xiong ◽

Jie Yang ◽

Yi Yu ◽

Liuyong He

Keyword(s):

Fatigue Life ◽

Simulated Body Fluid ◽

Cyclic Deformation ◽

Body Fluid ◽

Fatigue Behavior ◽

Fatigue Tests ◽

Total Strain Energy ◽

Micro Arc Oxidation ◽

Loading Modes ◽

Zk60 Magnesium Alloy

A bio-ceramic coating was prepared on the surface of ZK60 magnesium alloys by micro-arc oxidation (MAO) method. The substrate (BM) and coated (MAO) specimens were pre-corroded in a simulated body fluid (SBF) for 12 h. Strain-controlled and stress-controlled loading modes were used to conduct fatigue tests for the two specimens, respectively. The cyclic deformation behavior of the two specimens with non-corroded and pre-corroded was studied. The mechanism of cyclic deformation under different loading conditions is related to twinning and slip. At the same test conditions, the fatigue life of the non-corroded BM specimen is higher than that of the non-corroded MAO specimen, while the fatigue life of the pre-corroded MAO specimen is higher than that of the pre-corroded BM specimen. A modified total strain energy model is proposed and the precision of life prediction is higher than that of traditional fatigue model.

Download Full-text