The effect of Si addition and thermomechanical processing in an Fe-Mn alloy for biodegradable implants: Mechanical performance and degradation behavior

A novel aromatic-doped polycaprolactone (Aro-PCL) material was synthesized through a facile PCL aminolysis-condensation polymerization incorporating the aromatic moiety to PCL chain and assessed by focusing on the dynamic aggregation and crystalline microdomains associated with the in vitro degradation properties, mechanical performance and biocompatibility.

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Biodegradable Zn-Cu-Mn alloy with suitable mechanical performance and in vitro degradation behavior as a promising candidate for vascular stents

Materials Science and Engineering C ◽

10.1016/j.msec.2022.112652 ◽

2022 ◽

pp. 112652

Author(s):

Jimiao Jiang ◽

Yi Qian ◽

Hua Huang ◽

Jialin Niu ◽

Guangyin Yuan

Keyword(s):

Mechanical Performance ◽

Degradation Behavior ◽

Promising Candidate ◽

In Vitro Degradation ◽

Vascular Stents

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Mechanical properties, in vitro degradation behavior, hemocompatibility and cytotoxicity evaluation of Zn–1.2Mg alloy for biodegradable implants

RSC Advances ◽

10.1039/c6ra14300h ◽

2016 ◽

Vol 6 (89) ◽

pp. 86410-86419 ◽

Cited By ~ 54

Author(s):

Chao Shen ◽

Xiwei Liu ◽

Bo Fan ◽

Pingheng Lan ◽

Feiyu Zhou ◽

...

Keyword(s):

Mechanical Properties ◽

Biodegradable Implants ◽

Degradation Behavior ◽

Biodegradable Material ◽

In Vitro Degradation

The microstructure, mechanical properties, in vitro degradation behavior, in vitro hemocompatibility and cytotoxicity were tested to investigate Zn–1.2Mg alloy as a new biodegradable material.

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IMPROVEMENT IN MECHANICAL PERFORMANCE OF LOW-MODULUS β-Ti-Nb-Ta-Zr SYSTEM ALLOYS BY MICROSTRUCTURAL CONTROL VIA THERMOMECHANICAL PROCESSING

International Journal of Modern Physics B ◽

10.1142/s0217979208047602 ◽

2008 ◽

Vol 22 (18n19) ◽

pp. 2787-2795 ◽

Cited By ~ 1

Author(s):

M. NIINOMI

Keyword(s):

Tensile Strength ◽

Fatigue Strength ◽

Mechanical Performance ◽

Thermomechanical Processing ◽

Pure Titanium ◽

Wire Drawing ◽

Performance Parameters ◽

Cold Wire ◽

Low Modulus ◽

Microstructural Control

Mechanical performance parameters such as the fatigue strength, tensile strength, ductility and Young's modulus of newly developed Ti -29 Nb -13 Ta -4.6 Zr , referred to as TNTZ, can be improved considerably by microstructural control via thermomechanical processing. Thermomechanical processing including severe cold wire drawing can generate functionalities such as super elasticity in TNTZ. The abovementioned improvement in the mechanical performance and functionality of TNTZ is associated with its nanosize structure. The cytotoxicity of TNTZ is very low and equivalent to that of pure titanium. It is expected that TNTZ will be used as a structural biomaterial.

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Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100071363 ◽

1973 ◽

Vol 31 ◽

pp. 184-185

Author(s):

M.S. Grewal ◽

S.A. Sastri ◽

N.J. Grant

Keyword(s):

High Temperature ◽

Nickel Alloys ◽

Thermomechanical Processing ◽

Cold Work ◽

High Temperature Strength ◽

Strengthening Effect ◽

Mechanical Processing ◽

Uniform Dispersion ◽

Oxide Particles ◽

Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

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High-resolution x-ray imaging of small copper-rich precipitates in steels

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100104704 ◽

1988 ◽

Vol 46 ◽

pp. 528-529

Author(s):

J. R. Michael ◽

K. A. Taylor

Keyword(s):

Electron Microscopy ◽

Thermomechanical Processing ◽

Atom Probe ◽

Ferrite Matrix ◽

Scanning Transmission Electron Microscope ◽

Probe Field ◽

X Ray ◽

Subsequent Transformation ◽

Transmission Electron ◽

Scanning Transmission

Although copper is considered an incidental or trace element in many commercial steels, some grades contain up to 1-2 wt.% Cu for precipitation strengthening. Previous electron microscopy and atom-probe/field-ion microscopy (AP/FIM) studies indicate that the precipitation of copper from ferrite proceeds with the formation of Cu-rich bcc zones and the subsequent transformation of these zones to fcc copper particles. However, the similarity between the atomic scattering amplitudes for iron and copper and the small misfit between between Cu-rich particles and the ferrite matrix preclude the detection of small (<5 nm) Cu-rich particles by conventional transmission electron microscopy; such particles have been imaged directly only by FIM. Here results are presented whereby the Cu Kα x-ray signal was used in a dedicated scanning transmission electron microscope (STEM) to image small Cu-rich particles in a steel. The capability to detect these small particles is expected to be helpful in understanding the behavior of copper in steels during thermomechanical processing and heat treatment.

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