Effect of equal-channel angular pressing on structure and properties of Fe-Mn-C alloys for biomedical applications

被引：12

作者：

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

Anisimova, N. Yu ^{[2
,3
]}

Kiselevsky, M., V ^{[2
,3
]}

Rybalchenko, G., V ^{[4
]}

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

Bochvar, N. R. ^{[1
]}

Tabachkova, N. Yu ^{[2
,5
]}

Shchetinin, I., V ^{[2
]}

Shibaeva, T., V ^{[1
,2
]}

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

Tokar, A. A. ^{[1
,2
]}

Raab, A. G. ^{[6
]}

Dobatkin, S., V ^{[1
,2
]}

机构：

[1] AA Baikov Inst Met & Mat Sci RAS, Leninsky Prospect 49, Moscow 119334, Russia

[2] Natl Univ Sci & Technol MISIS, Leninsky Prospect 4, Moscow 119991, Russia

[3] Hlth Minist Russia, NN Blokhin Natl Med Res Ctr Oncol, Kashirskoe Shosse 24, Moscow 115478, Russia

[4] PN Lebedev Phys Inst RAS, Leninsky Prospect 53, Moscow 119334, Russia

[5] AM Prokhorov Gen Phys Inst RAS, Vavilov Str 38, Moscow 119991, Russia

[6] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, K Marx St 12, Ufa 450000, Russia

来源：

MATERIALS TODAY COMMUNICATIONS | 2022年 / 30卷

基金：

俄罗斯基础研究基金会;

关键词：

Fe-Mn-C alloys; Equal-channel angular pressing; Biocompatibility in vitro; Biodegradation rates; Mechanical properties; DEGRADATION BEHAVIOR; MAGNESIUM ALLOYS; STENTS; IRON; PRINCIPLE; DESIGN; METAL;

D O I：

10.1016/j.mtcomm.2021.103048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work two Fe - Mn - C alloys with different Mn contents were treated by equal-channel angular pressing (ECAP) in order to study the possibility of obtaining alloys with an increased degradation rate for the manufacture of biodegradable implants. Special attention was paid to the obtaining an ultrafine-grained alloys structure in a fully austenitic state and studying its effect on the corrosion rate, mechanical properties and biocompatibility in vitro. The X-ray analysis showed the formation of an austenitic structure in both alloys with the structural elements sizes of 100-250 nm after ECAP. For Fe-27Mn-C alloy ECAP resulted in significant increase in strength while maintaining satisfactory plasticity. The Fe-36Mn-C alloy samples destruction under tension occurs in the elastic region, which is associated with the a-Mn precipitation in the structure during ECAP deformation. The studied alloys were found to be hemocompatible. Reduced proliferation was noted on the Fe-36Mn-C alloy samples, indicating a non-specific biocidal effect of Mn. The alloys corrosion rates by weight loss method and potentiodynamic polarization analysis were studied. An increased corrosion rate of alloys after ECAP in comparison with the one of the course-grained counterpart, significantly exceeds the rate of corrosion of annealed iron.

引用

页数：14

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