Precipitation hardening of biodegradable Fe–Mn–Pd alloys

Moszner, Frank; Sologubenko, Alla S.; Schinhammer, Michael; Lerchbacher, Ch.; Hänzi, Anja C.; Leitner, Harald; Uggowitzer, Peter J.; Löffler, Jörg F.

doi:10.1016/j.actamat.2010.10.025

Cited by 39 publications

(22 citation statements)

References 32 publications

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“…Several types of iron-based alloys have been proposed for cardiovascular stent applications, including pure iron metal, binary Fe-metal alloys (metal = Mn, Co, Al, W, Sn, B, C, S, Pd and Pt), Fe-10Mn-1 % Pd [19], Fe-21Mn-0.7C (labeled TWIP), Fe-21Mn-0.7C-1 % Pd (labeled TWIP-1Pd) [20], Fe-Mn-Si [21], and Fe-based bulk metallic glasses (BMG) [22]. Suitable alloying elements for iron biomaterials must fulfill the requirements of temporary implant applications without neglecting the favorable combination of high strength, appropriate corrosion rate and good biocompatibility.…”

Section: Alloying Elementsmentioning

confidence: 99%

“…The following alloys with the nominal compositions Fe10Mn, Fe-10Mn-1 % Pd [19], Fe-21Mn-0.7C (labeled TWIP), Fe-21Mn-0.7C-1 % Pd (labeled TWIP-1Pd) [20], and Fe-30Mn-6Si [21] were produced from their raw elements after melting and casting in a vacuum induction furnace under argon atmosphere. To ensure homogenization, the ingots were encapsulated in quartz tubes under a 215 mbar argon atmosphere and solution-heat-treated (SHT) for 12 h at 1250°C, followed by water quenching [19].…”

Section: Vacuum Induction Furnacementioning

confidence: 99%

“…To ensure homogenization, the ingots were encapsulated in quartz tubes under a 215 mbar argon atmosphere and solution-heat-treated (SHT) for 12 h at 1250°C, followed by water quenching [19]. Isothermal aging of the SHT specimens was performed at 375, 400, 425, 450 and 500°C in air for various durations (up to 11 days), followed by quenching in water.…”

Section: Vacuum Induction Furnacementioning

confidence: 99%

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Iron and iron-based alloys for temporary cardiovascular applications

Francis

Yang

Virtanen

et al. 2015

J Mater Sci: Mater Med

145

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In the last decade, biodegradable metals have emerged as a topic of interest for particular biomedical applications which require high strength to bulk ratio, including for cardiovascular stents. The advantages of biodegradable materials are related to the reduction of long term risks associated with the presence of permanent metal implants, e.g. chronic inflammation and in-stent restenosis. From a structural point of view, the analysis of the literature reveals that iron-based alloys used as temporary biodegradable stents have several advantages over Mg-based alloys in terms of ductility and strength. Efforts on the modification and tunability of iron-based alloys design and compositions have been mainly focused on controlling the degradation rate while retaining the mechanical integrity within a reasonable period. The early pre-clinical results of many iron-based alloys seem promising for future implants developments. This review discusses the available literature focusing mainly on: (i) Fe and Fe-based alloys design and fabrication techniques; (ii) in vitro and in vivo performance; (iii) cytotoxicity and cell viability tests.

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Section: Alloying Elementsmentioning

confidence: 99%

Section: Vacuum Induction Furnacementioning

confidence: 99%

Section: Vacuum Induction Furnacementioning

confidence: 99%

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Iron and iron-based alloys for temporary cardiovascular applications

Francis

Yang

Virtanen

et al. 2015

J Mater Sci: Mater Med

145

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“…In the case of Fe-based alloys, maraging steels reveal ultrahigh strength, which is based on the formation of intermetallic precipitates forming in the martensitic matrix during an aging treatment at temperatures between 300 and 500°C. 9 Moszner et al 10 observed that the martensitic alloy Fe-10Mn-1Pd (in wt.%) exhibits all features characteristic of maraging steels and that considerable age-hardening is achieved through the formation of nanometer-sized precipitates rich in Mn and Pd. For this alloy, an interesting combination of strength and ductility was observed in the overaged state (see Fig.…”

Section: Introductionmentioning

confidence: 97%

Structural and chemical characterization of the hardening phase in biodegradable Fe–Mn–Pd maraging steels

et al. 2014

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Fe-Mn-Pd alloys are promising candidates as biodegradable material for use in temporary implant applications. In this study, the hardening phase of Fe-rich martensitic alloys containing 1, 3, and 6 wt.% Pd and a fixed Mn content of 10 wt.% was investigated. All of these alloys show considerable age-hardening upon isothermal aging at 500°C, exhibiting a behavior characteristic of maraging steels. Atom probe tomography (APT) and x-ray diffraction (XRD) measurements were performed to characterize the composition and crystallography of nanometer-sized precipitates forming in the overaged region of the Fe-Mn-Pd alloys. The precipitates consist mainly of Mn and Pd and the peaks of the intermetallic particles observed in the XRD spectra can be ascribed to the face-centered tetragonal b 1 -MnPd phase. The precipitation sequence for Fe-Mn-Pd is revealed to be similar to that reported for Fe-Mn-Ni and Fe-Mn-Pt maraging steels.

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“…In that context, new biodegradable alloys were developed by adding another elements, e.g. Fe-Mn-Pd [7], Fe-Mn-C-Pd [8].…”

Section: Introductionmentioning

confidence: 99%

Dimensional Changes, Microstructure, Microhardness Distributions And Corrosion Properties Of Iron And Iron-Manganese Sintered Materials

Kupková¹,

Hrubovčáková²,

Zeleňák³

et al. 2015

Archives of Metallurgy and Materials

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ZMIANY WYMIAROWE, MIKROSTRUKTURA, ROZKŁAD MIKROTWARDOŚCI I WŁASNOŚCI KOROZYJNE SPIEKANYCH MATERIAŁÓW ŻELAZO ORAZ ŻELAZO-MANGANIron samples and Fe-Mn alloys with Mn content of 25 wt.% and 30 wt.% were prepared by blending, compressing and sintering with the aim to study their dimensional changes, microstructure, microhardness distribution and primarily the electrochemical corrosion behaviour in a simulated body environment.The light microscopy (LM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and microhardness measurements revealed a microheterogeneous multiphase structure of sintered Fe-Mn samples. The potentiodynamic tests have demonstrated that the corrosion rates of such Fe-Mn alloys immersed in Hank's solution were higher than those for a pure iron, and also higher than the rates reported for homogeneous Fe-Mn alloys.Keywords: powder metallurgy, iron, manganese, corrosion behaviour, dimensional changes, microhardnessPróbki żelazne oraz stopy Fe-Mn, zawierające 25 i 30% mas. Mn, przeznaczone na biomateriały, zostały przygotowane na drodze mielenia, prasowania oraz spiekania w celu zbadania ich zmian wymiarowych, mikrostruktury, rozkładu mikrotwardości oraz odporności korozyjnej w skumulowanych w warunkach laboratoryjnych, panujących w ciele człowieka. Badania z wykorzystaniem mikroskopii optycznej i skaningowej, wraz z EDX oraz pomiary mikrotwardości ujawniły mikroniejednorodność wielofazowej struktury spiekanych stopów Fe-Mn. Testy potentiometryczne wykazały, że współczynniki korozji spieków Fe-Mn były wyższe niż spieków wykonanych z czystego żelaza oraz z jednorodnych stopów Fe-Mn.

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Precipitation hardening of biodegradable Fe–Mn–Pd alloys

Cited by 39 publications

References 32 publications

Iron and iron-based alloys for temporary cardiovascular applications

Iron and iron-based alloys for temporary cardiovascular applications

Structural and chemical characterization of the hardening phase in biodegradable Fe–Mn–Pd maraging steels

Dimensional Changes, Microstructure, Microhardness Distributions And Corrosion Properties Of Iron And Iron-Manganese Sintered Materials

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