Grain regulation and boosting mechanical properties of K77 superalloy in LPBF process by rotation scanning strategy

IF 15.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2026-07-21 Epub Date: 2026-08-12 DOI:10.1007/s42114-026-01972-8

Hang You, Guang Fu, Tao Zhang, Shangkun Jin, Qingpeng Zeng, Shijun Chen, Yuanyuan Zhou, Huaqiang Xiao, Zhengwen Zhang

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引用次数: 0

Abstract

To address the escalating demand for high-temperature materials in aerospace hot-end components, this study examined scan speed, laser power, and scan rotation angle parameters to determine the effects of the powder bed fusion process on the mechanical properties of high temperature hard-to-weld K77 material. While the scan rotation angle was determined to be the parameter that most affected the microstructure, 67° scan rotation angle, 800 mm/s scan speed, and 180 W laser power were found to be the most suitable parameters to ensure the highest tensile strength. The tensile strength obtained in the verification test was measured at 1420.5 ± 39.45 MPa after heat-treatment. The findings increase the application potential of laser powder bed fusion (LPBF) technology with K77 material and provide valuable information for process optimization. The results can significantly contribute to strategies to increase tensile strength and improve material performance in industrial production processes.

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旋转扫描法调控K77高温合金LPBF过程晶粒及提高力学性能

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.