The effect of Equal Channel Angular Pressing on the stress corrosion cracking susceptibility of AZ31 alloy in simulated body fluid

Peron, Mirco; Skaret, Pål Christian; Fabrizi, Alberto; Varone, Alessandra; Montanari, Roberto; Roven, Hans Jørgen; Ferro, Paolo; Berto, Filippo; Torgersen, Jan

doi:10.1016/j.jmbbm.2020.103724

Cited by 46 publications

(23 citation statements)

References 67 publications

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“…Even with an as-cast and coarse initial microstructure which is not currently used in the literature for ECAP processing, the present investigation shows that the ECAP processing of the present as-cast Mg-0.3Ce alloy results in very good grain refinement compared to another Mg-based alloys. This excellent grain refinement has not been obtained in conventional Mg-Al based alloys such AZ31 and AZ61 (Mg-6Al-1Zn, wt.%) alloys [50][51][52][53], or in Mg-Zn-Ca-Mn alloy [54] and Mg-13Gd-4Y-2Zn-0.6Zr (wt.%) alloys [55] under similar ECAP processing conditions (i.e. ECAP via route Bc through 4 passes).…”

Section: Microstructural Evolution After Ecap Processingmentioning

confidence: 88%

Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing

Sadi

Hanna

Azzeddine

et al. 2021

Materials Characterization

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Section: Microstructural Evolution After Ecap Processingmentioning

confidence: 88%

Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing

Sadi

Hanna

Azzeddine

et al. 2021

Materials Characterization

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“…Some studies had shown that a small amount of rare-earth oxides and hydroxides were detected in the corrosion products of the magnesium alloys containing rare earth, accompanied by a large amount of Al 2 O 3 , which could effectively improve the corrosion resistance of the alloy. [31,[42][43][44] Many studies had shown that [45][46][47] by improving the corrosion resistance of steel, aluminum, magnesium, and other alloys, the stress corrosion cracking resistance of the alloy could be significantly improved. Research of Chen et al [30] and Peron et al [47] showed that the improvement of corrosion resistance was the key factor to improve stress corrosion cracking in magnesium alloys.…”

Section: Discussionmentioning

confidence: 99%

“…[31,[42][43][44] Many studies had shown that [45][46][47] by improving the corrosion resistance of steel, aluminum, magnesium, and other alloys, the stress corrosion cracking resistance of the alloy could be significantly improved. Research of Chen et al [30] and Peron et al [47] showed that the improvement of corrosion resistance was the key factor to improve stress corrosion cracking in magnesium alloys. In this study, for the magnesium alloys with a lower volume fraction of the β phase during the SSRT process, the matrix corrosion and hydrogen evolution were suppressed, and the alloy's stress corrosion cracking resistance was improved.…”

Section: Discussionmentioning

confidence: 99%

Effect of Gd on microstructure and stress corrosion cracking of the AZ91‐extruded magnesium alloy

Song

Liu

Wang

et al. 2021

Materials & Corrosion

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AZ91 and AZ91-xGd (x = 0.5, 1.0, 1.5 wt%) magnesium alloys are extruded into plates. The addition of Gd promotes the formation of Al 2 Gd, effectively reducing the volume fraction of the β-Mg 17 Al 12 phase and making the banded structures of the extruded magnesium alloys thinner. The corrosion weight loss tests and electrochemistry analyses demonstrate that Gd significantly improves the pitting resistance of the AZ91 in 3.5-wt% NaCl solution saturated with Mg(OH) 2 . Slow strain rate tensile tests show that in a corrosive environment, compared with AZ91, the elongation to failure of the AZ91-1.0Gd alloy is increased by 47%, and the alloy exhibits excellent stress corrosion resistance in this study. The fracture mode of AZ91 is changed from typical intergranular fracture to a mixture of transgranular and intergranular fracture in the corrosion solution by adding Gd. The mechanism of Gd to improve the stress corrosion resistance of the AZ91 magnesium alloy is that Gd increases the corrosion resistance, especially the pitting of AZ91.

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“…Magnesium-based implants will possess adequate resistance to failure when applied in the corrosive physiological fluid with a synergetic influence of mechanical loading [ 102 ]. The mode of the stress loading can be static or cyclic, which can result in the complications of sudden fracture of implants via the stress corrosion cracking (SCC) and the corrosion fatigue (CF) [ 103 , 104 ]. Generally, SCC is related to anodic dissolution and hydrogen embrittlement [ 105 , 106 , 107 , 108 , 109 ].…”

Section: Corrosion Behaviormentioning

confidence: 99%

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Liu

Sun

et al. 2022

Materials

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Magnesium alloys exhibit superior biocompatibility and biodegradability, which makes them an excellent candidate for artificial implants. However, these materials also suffer from lower corrosion resistance, which limits their clinical applicability. The corrosion mechanism of Mg alloys is complicated since the spontaneous occurrence is determined by means of loss of aspects, e.g., the basic feature of materials and various corrosive environments. As such, this study provides a review of the general degradation/precipitation process multifactorial corrosion behavior and proposes a reasonable method for modeling and preventing corrosion in metals. In addition, the composition design, the structural treatment, and the surface processing technique are involved as potential methods to control the degradation rate and improve the biological properties of Mg alloys. This systematic representation of corrosive mechanisms and the comprehensive discussion of various technologies for applications could lead to improved designs for Mg-based biomedical devices in the future.

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The effect of Equal Channel Angular Pressing on the stress corrosion cracking susceptibility of AZ31 alloy in simulated body fluid

Cited by 46 publications

References 67 publications

Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing

Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing

Effect of Gd on microstructure and stress corrosion cracking of the AZ91‐extruded magnesium alloy

Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

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