About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
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Additive Manufacturing: Processing, Microstructure and Material Properties of Titanium-based Materials
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Presentation Title |
Modeling of True Stress-Strain in the Plastic Regime of Additively Manufactured Ti-6Al-4V |
Author(s) |
Andrew J. Temple, Maria J Quintana, Peter C Collins |
On-Site Speaker (Planned) |
Andrew J. Temple |
Abstract Scope |
The continued development of additive manufacturing, and the rapid expansion of AM process variants, necessitates the development of materials qualification methods that are able to predict the material properties and performance for a given composition and microstructure. In this way, it is possible to qualify the material independent of the additive manufacturing process. In this work, we have demonstrated that it is possible to not only predict the ultimate tensile strength, but also the full true stress-strain curves for more than 100 specimens of the alloy Ti-6Al-4V that were produced via wrought and three markedly different additively manufactured processes (large-volume electron beam, large-volume laser hot wire, and small-volume selective laser melting). Nearly all of the predictions for ultimate tensile strength, which ranges from ~910MPa to ~1170MPa, are within 5% of the experimentally measured values for both the wrought and additively manufactured samples, including samples that underwent post-deposition processing. |