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Corrosion Bending Fatigue of RESOLOY® and WE43 Magnesium Alloy Wires

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Magnesium Technology 2019

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

RESOLOY ®, a magnesium resorbable alloy based on Mg–Dy is the focus of this study. Corrosion bending fatigue behavior of RESOLOY wires was investigated with WE43 serving as a reference. Since these wires are developed for absorbable implant applications like stents, clips and anastomotic nails, circulating Ringer solution of 37 °C was used to simulate body conditions. The alloys were first extruded and finally cold-drawn to a wire diameter of 500 µm. Both alloys show very fine grains. The microstructure of WE43 was found homogeneous and equiaxed. RESOLOY shows recrystallized but non-equiaxed grains. RESOLOY is slightly harder than WE43 . Both alloys were subjected to strain-controlled fatigue and corrosion fatigue in a sequence which mimicked stent crimping, expansion, and in-vessel cycling. Fatigue life was strongly influenced by corrosion . Fatigue data for RESOLOY highlight the need for further wire processing optimization work that is currently underway.

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Acknowledgements

The authors acknowledge the support from Hartmut Habeck (UASS) for the corrosion experiments.

Author information

Authors and Affiliations

  1. University of Applied Sciences Stralsund, Zur Schwedenschanze 15, D-18435, Stralsund, Germany

    Petra Maier, Matthias Jahn & Maximilian Bechly

  2. Germany Fort Wayne Metals Research Products Corp., Fort Wayne, IN, USA

    Adam Griebel & Jeremy Schaffer

  3. MeKo Laserstrahl-Materialbearbeitungen e.K., Sarstedt, Germany

    Roman Menze & Benjamin Bittner

Authors
  1. Petra Maier
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  2. Adam Griebel
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  3. Matthias Jahn
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  4. Maximilian Bechly
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  5. Roman Menze
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  6. Benjamin Bittner
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  7. Jeremy Schaffer
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Corresponding author

Correspondence to Petra Maier .

Editor information

Editors and Affiliations

  1. Pacific Northwest National Laboratory, Richland, WA, USA

    Vineet V. Joshi

  2. The University of Alabama, Tuscaloosa, AL, USA

    J. Brian Jordon

  3. Lund University, Lund, Sweden

    Dmytro Orlov

  4. IND LLC, South Jordan, UT, USA

    Neale R. Neelameggham

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© 2019 The Minerals, Metals & Materials Society

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Cite this paper

Maier, P. et al. (2019). Corrosion Bending Fatigue of RESOLOY® and WE43 Magnesium Alloy Wires. In: Joshi, V., Jordon, J., Orlov, D., Neelameggham, N. (eds) Magnesium Technology 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05789-3_26

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