Functional and Mechanical Characteristics of Ultrafine-Grained Fe-Mn-Si Alloys for Biomedical Applications

被引：0

作者：

Rybalchenko, O. V. ^{[1
]}

Martynenko, N. S. ^{[1
]}

Rybalchenko, G. V. ^{[2
]}

Lukyanova, E. A. ^{[1
]}

Komarov, V. S. ^{[1
,3
]}

Kaplan, M. A. ^{[1
]}

Belyakov, A. N. ^{[4
]}

Dolzhenko, P. D. ^{[4
]}

Shchetinin, I. V. ^{[3
]}

Raab, A. G. ^{[5
]}

Dobatkin, S. V. ^{[1
]}

Prokoshkin, S. D. ^{[3
]}

机构：

[1] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119334, Russia

[2] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia

[3] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

[4] Belgorod Natl State Univ, Belgorod 308015, Russia

[5] Russian Acad Sci, Ufa Fed Res Ctr, Inst Mol & Crystal Phys, Ufa 450075, Russia

来源：

PHYSICAL MESOMECHANICS | 2024年 / 27卷 / 06期

基金：

俄罗斯科学基金会;

关键词：

Fe-Mn-Si alloys; equal channel angular pressing; shape memory effect; microstructure; microhardness; mechanical properties; corrosion rate; BEHAVIOR; DESIGN; STENTS;

D O I：

10.1134/S1029959924060080

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This work examines the possibility of regulating the corrosion rate of Fe-Mn-Si alloys by modifying their structure via equal channel angular pressing. It is found that the formed ultrafine-grained austenitic structure of Fe-Mn-Si alloys leads to a significant increase in strength characteristics at satisfactory ductility. The presence of special twin boundaries in the structure of Fe-Mn-Si alloys improves their corrosion resistance, while a predominantly grain-subgrain structure in the absence of twin boundaries increases the corrosion rate up to 0.4 mm/year. The shape memory effect in the studied alloys manifests itself at temperatures unacceptable for medical use. Structure refinement by equal channel angular pressing in modes that ensure a completely austenitic state leads to a decrease in shape memory properties.

引用

页码：710 / 724

页数：15

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