Material Densification
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Post-processing contributions to fatigue variability in L-PBF Ti6Al4V with the University of Washington

Explore how process variability and post-processing techniques, such as stress relief (SR) and hot isostatic pressing (HIP), influence the fatigue life and reliability of additively manufactured Ti-6Al-4V titanium alloys.

In this Tech Talk, researchers from the University of Washington’s Materials Science and Engineering (MSE) program explore how post-processing routines influence fatigue performance in additively manufactured Ti6Al4V produced by Laser Powder Bed Fusion (L-PBF).

Dwayne D. Arola, Director of the Applied Masters Program, and Rick Schleusener, PhD student, highlight the critical role of process variability in shaping material reliability. A particular focus is placed on post-processing contributions to fatigue life distributions, comparing the effects of Stress Relief (SR) and Hot Isostatic Pressing (HIP).

Through this discussion, the talk emphasizes how post-processing pathways determine failure origins, scatter in fatigue life, and the overall performance envelope of L-PBF Ti6Al4V, with implications for both research and industrial applications.

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