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Article
Open AccessPhase Composition and Phase Transformation of Additively Manufactured Nickel Alloy 718 AM Bench Artifacts
Additive manufacturing (AM) technologies offer unprecedented design flexibility but are limited by a lack of understanding of the material microstructure formed under their extreme and transient processing con...
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Article
Determination of onset temperature of melting in binary alloys using unit root test in differential scanning calorimetry
One of the important functions in differential scanning calorimetry (DSC) measurements is to determine the phase transition temperature of materials. In this study, we propose a statistical approach to determi...
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Article
Development of a Diffusion Mobility Database for Co-Based Superalloys
To facilitate the development of high-temperature Co-based γ-γ′ superalloys, a Co-Ni based diffusion mobility database is developed for the eight component FCC (Face Centered Cubic) system of Co-Al-W-Ni-Cr-Ti-...
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Article
Phase Fraction and Evolution of Additively Manufactured (AM) 15-5 Stainless Steel and Inconel 625 AM-Bench Artifacts
A proper understanding of the structure and microstructure of additively manufactured (AM) alloys is essential not only to the prediction and assessment of their material properties, but also to the validation...
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Article
Open AccessDiffusion in the Ti-Al-V System
Diffusion in the Ti-Al-V system is studied and a CALculation of Phase Diagrams (CALPHAD) diffusion mobility description is developed. Diffusion couple experiments are performed to obtain diffusion paths in the...
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Article
γ′ Phase Stability and Phase Equilibrium in Ternary Co-Al-W at 900 °C
Phase equilibria at 900 °C in the Co-rich Co-Al-W ternary system are investigated through isothermal annealing of six alloy compositions for times up to 8000 h. The volume fraction of the L12-γ′ phase co-existing...
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Article
The Effect of Bi Contamination on the Solidification Behavior of Sn-Pb Solders
This paper presents experimental results and theoretical calculations that evaluate the effects of Bi contamination on the solidification behavior of Sn-Pb alloys. The pasty (mushy) range, the type of solidifi...
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Chapter
Fundamental Properties of Pb-Free Solder Alloys
The search for a global Pb-free replacement for Sn-Pb eutectic alloy has been an evolving process as the threat of a regional lead ban became a reality in July 2006. Over the twelve years from 1994 through 200...
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Article
The effect of Pb contamination on the solidification behavior of Sn-Bi solders
This paper presents experimental results and theoretical calculations to evaluate the effects of Pb contamination on the solidification behavior of Sn-x Bi alloys (x=5, 10, and 58 mass %). The pasty (mushy) ra...
