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10.3390/ma14123327
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Article

Effect of Thermomechanical Treatment on Structure and Functional Fatigue Characteristics of Biodegradable Fe-30Mn-5Si (wt %) Shape Memory Alloy

by
Sergey Prokoshkin
1,
Yury Pustov
2,
Yulia Zhukova
3,*,
Pulat Kadirov
3,
Maria Karavaeva
3,
Alexey Prosviryakov
4 and
Sergey Dubinskiy
1
1
Metal Forming Department, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
2
Department of Steel Metallurgy, New Production Technologies and Protection of Metals, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
3
Center of Nanomaterials and Nanotechnologies, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
4
Ultrafine-Grained Metallic Materials Laboratory, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
*
Author to whom correspondence should be addressed.
Materials 2021, 14(12), 3327; https://doi.org/10.3390/ma14123327
Submission received: 20 May 2021 / Revised: 7 June 2021 / Accepted: 9 June 2021 / Published: 16 June 2021
(This article belongs to the Special Issue Research on Fatigue Behavior of Metals and Alloys)
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Abstract

The Fe-Mn-Si shape memory alloys are considered promising materials for the biodegradable bone implant application since their functional properties can be optimized to combine bioresorbability with biomechanical and biochemical compatibility with bone tissue. The present study focuses on the fatigue and corrosion fatigue behavior of the thermomechanically treated Fe-30Mn-5Si (wt %) alloy compared to the conventionally quenched alloy because this important functionality aspect has not been previously studied. Hot-rolled and water-cooled, cold-rolled and annealed, and conventionally quenched alloy samples were characterized by X-ray diffraction, transmission electron microscopy, tensile fatigue testing in air atmosphere, and bending corrosion fatigue testing in Hanks’ solution. It is shown that hot rolling at 800 °C results in the longest fatigue life of the alloy both in air and in Hanks’ solution. This advantage results from the formation of a dynamically recrystallized γ-phase grain structure with a well-developed dislocation substructure. Another important finding is the experimental verification of Young’s modulus anomalous temperature dependence for the studied alloy system, its minimum at a human body temperature, and corresponding improvement of the biomechanical compatibility. The idea was realized by lowering Ms temperature down to the body temperature after hot rolling at 800 °C.
Keywords: iron alloys; shape memory alloys; biodegradable metals; functional properties; thermomechanical treatment; mechanical properties; corrosion and electrochemical behavior; corrosion fatigue iron alloys; shape memory alloys; biodegradable metals; functional properties; thermomechanical treatment; mechanical properties; corrosion and electrochemical behavior; corrosion fatigue

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MDPI and ACS Style

Prokoshkin, S.; Pustov, Y.; Zhukova, Y.; Kadirov, P.; Karavaeva, M.; Prosviryakov, A.; Dubinskiy, S. Effect of Thermomechanical Treatment on Structure and Functional Fatigue Characteristics of Biodegradable Fe-30Mn-5Si (wt %) Shape Memory Alloy. Materials 2021, 14, 3327. https://doi.org/10.3390/ma14123327

AMA Style

Prokoshkin S, Pustov Y, Zhukova Y, Kadirov P, Karavaeva M, Prosviryakov A, Dubinskiy S. Effect of Thermomechanical Treatment on Structure and Functional Fatigue Characteristics of Biodegradable Fe-30Mn-5Si (wt %) Shape Memory Alloy. Materials. 2021; 14(12):3327. https://doi.org/10.3390/ma14123327

Chicago/Turabian Style

Prokoshkin, Sergey, Yury Pustov, Yulia Zhukova, Pulat Kadirov, Maria Karavaeva, Alexey Prosviryakov, and Sergey Dubinskiy. 2021. "Effect of Thermomechanical Treatment on Structure and Functional Fatigue Characteristics of Biodegradable Fe-30Mn-5Si (wt %) Shape Memory Alloy" Materials 14, no. 12: 3327. https://doi.org/10.3390/ma14123327

APA Style

Prokoshkin, S., Pustov, Y., Zhukova, Y., Kadirov, P., Karavaeva, M., Prosviryakov, A., & Dubinskiy, S. (2021). Effect of Thermomechanical Treatment on Structure and Functional Fatigue Characteristics of Biodegradable Fe-30Mn-5Si (wt %) Shape Memory Alloy. Materials, 14(12), 3327. https://doi.org/10.3390/ma14123327

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