Microstructure and corrosion behavior of laser surface-treated AZ31B Mg bio-implant material

Wu, Tso-Chang; Ho, Yee‐Hsien; Joshi, Sameehan S.; Rajamure, Ravi Shanker; Dahotre, Narendra B.

doi:10.1007/s10103-017-2174-1

Cited by 42 publications

(13 citation statements)

References 36 publications

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“…The low density of magnesium, which is 36 and 78% lighter than aluminium and steel, respectively, makes it the most promising candidate for lighting sources [6] and energy storage like water/seawater-activated magnesium batteries [7]. Moreover, Mg-based alloys are attractive candidates for using in biomedical engineering as biodegradable temporary implants [8][9][10]. However, traditionally, Mg-based alloys comprise less than 1% of a vehicle's weight [11].…”

Section: Introductionmentioning

confidence: 99%

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

Tighiouaret

Hanna

Azzeddine

et al. 2021

Materials Chemistry and Physics

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The microstructure and texture evolution of an AZ31 alloy were investigated after hot rolling and subsequent annealing using electron backscatter diffraction (EBSD). First, the alloy was hot-rolled at 350 °C up to low, medium and high strain (20, 50 and 85% of thickness reduction, respectively). The alloy samples where then annealed at 350 °C for 2, 10 and 60 minutes. The effect of strain level and annealing on corrosion behavior in seawater was also evaluated using electrochemical tests. At low strain, the microstructure was characterised by the absence of twinning, mainly due to the prior thermo-mechanical history of the as-received alloy. However, various modes of twinning were observed at medium strain. At high strain, the dynamic recrystallization process resulted in a microstructure with a typical basal texture. The results demonstrate that twins are responsible for the deviation of {0002} basal poles from normal towards the transversal direction. Annealing at 350°C for up to 60 min led to normal grain growth in all the samples. In medium and highly strained samples, the deformation texture was retained, while the low strain sample underwent noticeable changes due to the absence of dynamic recrystallization. A synergetic effect of grain refinement and texture weakening was responsible for the alloy's enhanced corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

Tighiouaret

Hanna

Azzeddine

et al. 2021

Materials Chemistry and Physics

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“…The fine grain boundaries acted as nucleation sites for HA formation, and the Ca/P ratio of biomineralization product was 1.68. The characteristic microstructure also exhibited uniform corrosion due to the homogeneous distribution of the intermetallic phase that acted as a corrosion barrier (Wu et al, 2017). Zhang et al (2019a) investigated the effect of melting and surface texturing during LSM on degradation of Mg-Gd-Ca alloys.…”

Section: Laser Surface Melting Treatmentmentioning

confidence: 99%

Recent Progress in Surface Modification of Mg Alloys for Biodegradable Orthopedic Applications

et al. 2022

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The combination of light weight, strength, biodegradability, and biocompatibility of magnesium (Mg) alloys can soon break the paradigm for temporary orthopedic implants. As the fulfillment of Mg-based implants inside the physiological environment depends on the interaction at the tissue–implant interface, surface modification appears to be a more practical approach to control the rapid degradation rate. This article reviews recent progress on surface modification of Mg-based materials to tailor the degradation rate and biocompatibility for orthopedic applications. A critical analysis of the advantages and limitations of the various surface modification techniques employed are also included for easy reference of the readers.

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“…This was due to high water jet pressure (p) = 100Mpa with successive passes. It permitted minimum energy for the creation of surface waviness on the peened region [33], leading to the desired roughened surface layer directly associated with the surface energy of the implant and later on affecting the protein absorption and wettability of the surface. Surface wettability enhanced cell adhesion, cell proliferation and prevent premature failure of implant.…”

Section: Effect Of Optimal Parameter Setting In 3d Surface Topographymentioning

confidence: 99%

Investigations on Water Jet Peening of AZ31B Mg Alloy for Bio Medical Implants

Mohan

Muruganandhan

Natarajan

2021

Preprint

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Among different unconventional peening technique, water jet is cold working process has capable to produce surface topography on wide variety of materials. This paper deals with the effect of water jet peening on the corrosion resistance and the surface topography of AZ31B Mg alloy. Variations in water jet peening variables including standoff distance, traverse speed and multiple passes have been employed in this study. A study of the enhancement in hardening and roughening effect was made following the peening process. 29.44% Improvements in microhardness and 31.06% reduction in surface roughness were observed on the peened surfaces. Optimal peened surface was obtained through use of the multi-objective optimization technique, namely, TOPSIS, which utilizes response variables such as micro hardness and surface roughness. In this study, Surface Topography, XRD Analysis and Electrochemical test were conducted. In addition, analysis of the Microstructure of corroded region was made in the unpeened and optimized peened surfaces. Surface topography parameters including Sa, Sq, SSk, Sku results confirmed the suitability of the peened surface for ooseointegration and cell growth. FWHM value measured from XRD peaks showed the formation of grain refinement on the peened surface, and the results showed promising improvements in the corrosion resistance compared to the unpeened AZ31B Mg alloy.

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Microstructure and corrosion behavior of laser surface-treated AZ31B Mg bio-implant material

Cited by 42 publications

References 36 publications

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

On the evolution of microstructure, texture and corrosion behavior of a hot-rolled and annealed AZ31 alloy

Recent Progress in Surface Modification of Mg Alloys for Biodegradable Orthopedic Applications

Investigations on Water Jet Peening of AZ31B Mg Alloy for Bio Medical Implants

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