Experimental and numerical investigations for mechanical and microstructural characterization of micro-manufactured AZ91D magnesium alloy disks for biomedical applications

Said Murat Kayhan, Aydin Tahmasebifar, Muammer Koç, Yusuf Usta, Ayşen Tezcaner, Zafer Evis

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this study, the microstructure, mechanical and biological properties of the Mg-based implant samples prepared by the combination of micro-manufacturing and powder metallurgy route were investigated. Porous AZ91D Mg alloy disks with smooth and textured surfaces were manufactured under compaction pressures of 25 and 40 MPa at 150 °C and under sintering conditions of 380 °C for 30 and 150 min. The phase changes and microstructure were analyzed using X-ray diffraction (XRD), scanning electron (SEM) and light microcopy. The mechanical properties were characterized using diametral tensile and hardness tests. The relative densities were also calculated by their weights and volumes. As compaction pressure increased, relative densities of the disks increased (0.57-0.67%) as well as the diametral tensile strength (2.55-3.01 MPa) and Vickers micro-hardness values (13.5-84.1 HV2). The validity of relative density measurements was provided by image processing technique and finite element method. It was observed that cells adhered and proliferated more on disks with textured surface of channels than on disks with a smooth surface. Cell culture studies showed that Mg alloy disks were cytocompatible.

Original languageEnglish
Pages (from-to)397-408
Number of pages12
JournalMaterials and Design
Volume93
DOIs
Publication statusPublished - 5 Mar 2016

Fingerprint

Magnesium alloys
magnesium
hardness
compaction
microstructure
Compaction
Microstructure
Powder metallurgy
metallurgy
tensile strength
Cell culture
image processing
Microhardness
finite element method
mechanical property
Image processing
Tensile strength
manufacturing
Sintering
Hardness

Keywords

  • AZ91D magnesium alloy
  • Biological properties
  • Mechanical characterization
  • Microstructural evaluation
  • Powder metallurgy

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Experimental and numerical investigations for mechanical and microstructural characterization of micro-manufactured AZ91D magnesium alloy disks for biomedical applications. / Kayhan, Said Murat; Tahmasebifar, Aydin; Koç, Muammer; Usta, Yusuf; Tezcaner, Ayşen; Evis, Zafer.

In: Materials and Design, Vol. 93, 05.03.2016, p. 397-408.

Research output: Contribution to journalArticle

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