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Robert J. Warren
Researcher at Worcester Polytechnic Institute
Publications - 5
Citations - 401
Robert J. Warren is an academic researcher from Worcester Polytechnic Institute. The author has contributed to research in topics: Paris' law & Microstructure. The author has an hindex of 4, co-authored 5 publications receiving 246 citations.
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Journal ArticleDOI
Effects of heat treatments on microstructure and properties of Ti-6Al-4V ELI alloy fabricated by electron beam melting (EBM)
Haize Galarraga,Robert J. Warren,Diana A. Lados,Ryan R. Dehoff,Michael M. Kirka,Peeyush Nandwana +5 more
TL;DR: In this article, different heat treatments were performed based on three approaches in order to study the effects of heat treatments on the unique microstructure formed during the EBM fabrication process.
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Fatigue crack growth mechanisms at the microstructure scale in as-fabricated and heat treated Ti-6Al-4V ELI manufactured by electron beam melting (EBM)
TL;DR: In this paper, the effect of the as-fabricated EBM microstructure and fatigue crack growth was investigated and compared to that of the equiaxed β annealed micro-structure obtained by annealing above the β transus temperature.
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Effects of processing on microstructure evolution and fatigue crack growth mechanisms in cold-spray 6061 aluminum alloy
TL;DR: In this paper, the effects of the material's characteristic microstructure, stress ratio, and post-fabrication heat treatment (annealing and T6) on the fatigue crack growth behavior were systematically investigated.
Journal ArticleDOI
Small Fatigue Crack Growth Mechanisms and Interfacial Stability in Cold-Spray 6061 Aluminum Alloys and Coatings
TL;DR: In this article, the effects of microstructure and initial flaw size on the fatigue crack growth response were systematically examined, and the crack growth mechanisms at the microstructural scale were established and compared to those of long cracks.
Journal ArticleDOI
Microstructure evolution, fatigue crack growth, and ultrasonic fatigue in As-fabricated laser powder bed and conventionally cast Al–10Si-0.4Mg: A mechanistic understanding and integrated flaw-sensitive fatigue design methods
Timothy D. Piette,Robert J. Warren,Anthony G. Spangenberger,Edward J. Hummelt,Diana A. Lados +4 more
TL;DR: In this article, microstructures, tensile properties, and long and small fatigue crack growth behaviors of laser powder bed (LPB) manufactured Al-10Si-0.4Mg were systematically investigated in both orientations with respect to the build direction, and compared to those of an equivalent conventional cast material.