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Tensile Properties and Fracture Behaviour of Biodegradable Iron–Manganese Scaffolds Produced by Powder Sintering

Queensland Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
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Materials 2019, 12(10), 1572; https://doi.org/10.3390/ma12101572
Received: 1 April 2019 / Revised: 28 April 2019 / Accepted: 6 May 2019 / Published: 14 May 2019
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Abstract

Powder sintering at 1200 °C for 180 min was used to produce Fe–Mn based alloys with tensile properties and an elastic modulus suitable for biodegradable implant applications. The effect of the addition of manganese on the microstructure, tensile properties and fracture behaviour of the Fe–Mn alloys was investigated. The Fe–35Mn alloy with a microstructure dominated by the Austenite phase showed the best set of tensile properties, including ultimate tensile strength and Young’s modulus, suitable for orthopaedic implant applications. The fracture surface of the Fe–35Mn alloy showed signs of complex multimode fracture behaviour, consisting of interconnected pores and large segments with signs of ductile fracture, including the presence of dimples as well as micro-voids. View Full-Text
Keywords: Fe–Mn alloys; biodegradable materials; mechanical properties; powder sintering Fe–Mn alloys; biodegradable materials; mechanical properties; powder sintering
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Dehghan-Manshadi, A.; StJohn, D.; Dargusch, M. Tensile Properties and Fracture Behaviour of Biodegradable Iron–Manganese Scaffolds Produced by Powder Sintering. Materials 2019, 12, 1572.

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