Solidification of Agcu Alloys at High Growth Rates Produced by Continuous Laser Melt Quenching

Copley, S. M.; Todd, Judith A.; Yankova, M. I.; Yankov, E. Y.

doi:10.1007/978-94-009-0197-1_5

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…Manvatkar et al [44] shown that AM techniques that employ sources such as lasers or electron beams enable continuous re-melting of the preceding layer, allowing for greater control of the solidification rate when compared to other rapid solidification processes. Copley et al [45] pointed out that the laser melting techniques which are similar to surface melting techniques do not require undercooling because the liquid is contained in its own solid. A very few surfaces melting experiments were able to produce a micro-segregation-free crystalline structure.…”

Section: Microstructural Evolution In Am and As-cast Specimensmentioning

confidence: 99%

Investigating the Structure, Microstructure, and Texture in Selective Laser-Melted Sterling Silver 925

Vikram

Kollo

Prashanth

et al. 2021

Metall Mater Trans A

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The evolution of microstructure and texture during selective laser melting (SLM) of silver alloy-sterling silver 925 (AM Ag925) has been investigated and analyzed vis-a`-vis cast sterling silver (AC Ag925). The microstructure of AM Ag925 was characterized by a single-phase silver-rich face-centered cubic solid solution with dendritic morphology, along with some locally distributed micro-segregated copper-germanium (Cu-Ge)-rich regions. Each adjacent dendritic feature consists of Ag-Cu-rich and Ag-Ge-rich regions and appears as alternate dark and bright regions. On the other hand, the as-cast AC Ag925 microstructure comprises Ag and Cu phases. Specific heat treatment was employed, which led to an equiaxed microstructure in AM Ag925 with Cu distributing along grain boundaries while the microstructure of AC Ag925 had Cu precipitates inside the matrix. Bulk texture studies revealed that the solidified textures were very weak for AM Ag925, and a random texture is observed. On the other hand, for the AC Ag925 specimens, a typical fiber texture is observed. Both AC Ag925 and AM Ag925 showed significant deviation from 100 h i solidification texture and influences the mechanical properties.

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Section: Microstructural Evolution In Am and As-cast Specimensmentioning

confidence: 99%