The Effect of Microstructure and Strain Rates on the Mechanical Properties of Additively Manufactured Metallics
A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".
Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 2128
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Special Issue Editors
Interests: additive manufacturing of metallic; polymers and their reinforced composites; natural and synthetic fiber; particulate composites
Interests: additive manufacturing of titanium; platinum group metals and related composites; design for additive manufacturing; qualification of additively manufactured components
Special Issue Information
Dear Colleagues,
The microstructure of additively manufactured metallics varies as a function of process parameters, types of metallics, cooling rates and post-processing. This in turn impacts their mechanical properties. The mechanical response of additively manufactured metallics is dependent on the imposed strain rates, which affect their dislocation density and microstructure and therefore mechanisms of failure.
Metallics’ response to AM is a function of the optical, thermal and physical properties of the powder and the melt produced. Whilst most alloys used in AM are prealloyed, there is a growing interest in in situ alloying. The work conducted on in situ alloying highlights some degree of loss of the alloying metals, and partial prealloying is recommended in such cases.
The addition of ceramic and nanoparticle-reinforcing phases, while enhancing the thermal, physical and mechanical properties of the produced parts, comes with challenges in optimizing the process parameters. The optimal process parameters in such cases are not singular as when single alloys and metals are used but rather vary with the volume fraction of the reinforcing phases.
This Special Issue will focus on the evolution of different microstructures and resulting mechanical properties of built parts as a function of the AM build process, composition of in situ alloying powders, type and volume fraction of reinforcing phases, post-treatment and imposed strain rates.
Prof. Dr. Maina Maringa
Prof. Dr. Willie Du Preez
Prof. Dr. Sisa Lesley Pityana
Guest Editors
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Keywords
- additive manufacturing
- microstructure
- process parameters
- in situ and pre-alloying
- AM composites
- strain rates
- thermal
- physical and mechanical properties
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