Microstructural, mechanical and thermodynamic study of the as-cast Zn–Al–Sr alloys at high Sr content

Gutiérrez-Menchaca, J.; Torres-Torres, D.; Garay-Tapia, A.M.

doi:10.1016/j.jallcom.2020.154511

Cited by 14 publications

(1 citation statement)

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“…The multifaceted SrZn 13 phase can cause local stress concentration at the grain edges, thereby promoting failure. [ 33 ] Among the tested samples, BZA915 exhibited the highest microhardness value, which can be attributed to its higher Sr content and refined microstructure.…”

Section: Resultsmentioning

confidence: 99%

Influence of Sr and Mn Elements on the Microstructural Characteristics, Mechanical, and Anticorrosion Properties of Zn‐Based Biodegradable Materials

Wang,

Yu,

Jung

2023

Adv Eng Mater

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This study specifically focused on investigating the effects of Mn and Sr additions on the microstructure, mechanical properties, and anti‐corrosion behavior of as‐extruded Zn‐Mn‐Sr alloys, with the ultimate goal of developing biodegradable implants. The microstructural observations revealed that the incorporation of Mn and Sr elements played a crucial role in refining the hcp (Zn) grains within the alloys. Moreover, intermetallic phase SrZn13 were observed to precipitate along with the eutectic microstructure. These microstructural changes contributed to the overall mechanical properties of the alloys. Mechanical testing demonstrated that increasing the Sr content in the alloys resulted in improved strength. Thus, the addition of Sr showed the potential to enhance the mechanical properties of Zn‐Mn alloys, but it also resulted in a trade‐off with ductility. Notable alloys, BZA920, exhibited the highest values of yield strength (YS) at 219.8 ± 5.2 MPa and ultimate tensile strength (UTS) at 240.6 ± 4.3 MPa；alloys of BZA315, BZA615, and BZA915 exhibited excellent ductility of over 40%. These enhanced mechanical properties were attributed to the grain refinement and lattice distortion induced by the presence of Mn and Sr. The electrochemical and immersion tests conducted in simulated body fluid (SBF) solution demonstrated the alloys’ favorable corrosion resistance. The corrosion rates ranged from 0.05 to 0.15 mm/year, indicating their potential suitability as implant materials. Overall, this study highlighted the exceptional mechanical properties, favorable corrosion resistance, and excellent biocompatibility of the investigated Zn‐Mn‐Sr alloys, which positions Zn‐Mn‐Sr alloys as highly promising candidates for biodegradable implants.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%