Selective laser melting - Wikipedia
网页Selective laser melting (SLM) is one of many proprietary names [1] for a metal additive manufacturing (AM) technology that uses a bed of powder with a source of heat to create metal parts. Also known as direct metal laser sintering (DMLS), the ASTM standard term is powder bed fusion (PBF).
Crystallographic texture evolution in electron beam melting …
网页2021年9月1日 · Crack-free pure molybdenum is fabricated via electron beam melting AM. Fiber texture switching is observed across various energy density settings. The weld pool shape likely drives the fiber selection mechanism.
The effect of short glass fibers on the process behavior of polyamide ...
网页2020年3月1日 · In this paper, the effects of short glass fibers on polyamide 12 concerning powder properties, process behavior and part properties in laser beam melting of polymers (SLS) are investigated. It could be shown that by increasing the short glass fiber content powder properties as well as part properties are immensely affected.
High frequency beam oscillation keyhole dynamics in laser melting ...
网页2023年2月2日 · Communications Materials - Beam oscillation is an attractive method to achieve melt pool and microstructure control in laser powder bed additive manufacturing. Here, in-situ X-ray imaging and...
Heat Generation and Removal in Fiber Lasers | IntechOpen
网页2015年5月18日 · Heat generated in high–power fiber laser amplifiers is the source of increased temperature and stress inside the gain medium, which causes poor beam quality and restricts average output power. To solve this problem, fiber structures with enhanced mode areas have been suggested.
A Review on Laser Beam Shaping Application in Laser‐Powder Bed …
网页2024年5月22日 · The L-PBF process involves rapid melting and solidification of metallic powders using a laser source to produce dense parts. Most industrial L-PBF systems use a fiber-based laser source that emits a Gaussian beam distribution.
Fiber Lasers in Material Processing - IntechOpen
网页2016年3月2日 · The increased cutting speeds for fiber laser is an indication of a higher absorption of the fiber laser beam by the metal workpiece compared to the absorption of the CO 2 laser beam. The melting efficiency of a given laser increases with increase in the absorptivity since a larger proportion of the incident laser radiation is absorbed by the ...
Laser Surface Remelting in Single-Crystal Nickel-based ... - Springer
网页2023年7月11日 · The use of different energy densities in laser surface melting can result in two different modes of penetration: conductive mode and keyhole mode. The energy density in fiber lasers can be regulated by adjusting the …
Modeling Laser Beam Absorption of Metal Alloys at High …
网页2021年3月12日 · Selective laser melting (SLM) or laser beam powder bed fusion of metals (PBF-LB/M) is one powder bed fusion additive manufacturing technique, where a laser beam selectively melts and fuses metal powder particles together.
网页Introduction. The use of selective laser beam melting of polymers (SLS) has shifted from prototyping applications to functional components in the last years. Yet, for SLS, polyamide 12 (PA 12)...