Powder Metallurgy Processing and Mechanical Properties of Controlled Ti-24Nb-4Zr-8Sn Heterogeneous Microstructures
| Autor: | Y.L. Hao, Eric Leroy, Benoît Fer, David Tingaud, A. Hocini, Guy Dirras, Frédéric Prima |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
Materials science Fabrication titanium alloy Spark plasma sintering 02 engineering and technology mechanical properties 01 natural sciences Phase (matter) Powder metallurgy 0103 physical sciences heterogeneous microstructure Hardware_INTEGRATEDCIRCUITS General Materials Science Composite material Ball mill lcsh:Mining engineering. Metallurgy 010302 applied physics Metals and Alloys ComputingMilieux_PERSONALCOMPUTING Titanium alloy 021001 nanoscience & nanotechnology Microstructure powder metallurgy Deformation mechanism InformationSystems_MISCELLANEOUS 0210 nano-technology |
| Zdroj: | Metals Volume 10 Issue 12 Metals, Vol 10, Iss 1626, p 1626 (2020) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met10121626 |
| Popis: | This paper gives some insights into the fabrication process of a heterogeneous structured &beta metastable type Ti-24Nb-4Zr-8Sn alloy, and the associated mechanical properties optimization of this biocompatible and low elastic modulus material. The powder metallurgy processing route includes both low energy mechanical ball milling (BM) of spherical and pre-alloyed powder particles and their densification by Spark Plasma Sintering (SPS). It results in a heterogeneous microstructure which is composed of a homogeneous 3D network of &beta coarse grain regions called &ldquo core&rdquo and &alpha /&beta dual phase ultra-fine grain regions called &ldquo shell.&rdquo However, it is possible to significantly modify the microstructural features of the alloy&mdash including &alpha phase and shell volume fractions&mdash by playing with the main fabrication parameters. A focus on the role of the ball milling time is first presented and discussed. Then, the mechanical behavior via shear tests performed on selected microstructures is described and discussed in relation to the microstructure and the probable underlying deformation mechanism(s). |
| Databáze: | OpenAIRE |
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