Macro Co-Al-W-based superalloy single-crystal fabrication using selective laser melting

Guo，Chuan1; Zhou，Yang2; Xu，Zhen3; Li，Yu4; Li，Gan3; Shi，Zhifang3; Sun，Jinxing3; He，Xi3; Zhu，Qiang3

2024-10-01

10.1016/j.scriptamat.2024.116213

Scripta Materialia   影响因子和分区

1359-6462

In the current work, a type of Co-Al-W-based superalloy was fabricated via selective laser melting. The samples were processed using two laser beam systems with different groups of processing parameters. The first group produced a polycrystalline microstructure, while a macro-scale single crystal (a cylinder of 2 mm diameter and 5 mm height) was first achieved by the second group. The high stability of the melt pool and the lower flow rate of molten material under the second group of processing parameters were the key factors for the formation of a single crystal, which was revealed by the numerical analysis. Compared with the polycrystalline microstructure, the sample with single-crystal microstructure had a higher hardness and compression yield strength in the room-temperature nanoindentation tests.

Co-Al-W-based superalloy Macro scale Selective laser melting Single crystal

SCI ; EI

英语

其他

20242316210792

Aluminum alloys ; Cobalt alloys ; Crystal growth ; Fabrication ; Laser beams ; Melting ; Selective laser melting ; Single crystals

Metallurgy and Metallography:531 ; Aluminum Alloys:541.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Laser Beam Interactions:744.8 ; Reproduction, Copying:745.2 ; Chemical Operations:802.3 ; Crystalline Solids:933.1 ; Crystal Growth:933.1.2

MATERIALS SCIENCE

2-s2.0-85195086606

Scopus

1.School of Advanced Manufacturing,Sun Yat-Sen University,Shenzhen,518107,China
2.BYD Auto Industry Co.,Ltd,Shenzhen,518000,China
3.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Institute of Plasma Physics,HFIPS,Chinese Academy of Sciences,Hefei,230031,China

Guo，Chuan,Zhou，Yang,Xu，Zhen,et al. Macro Co-Al-W-based superalloy single-crystal fabrication using selective laser melting[J]. Scripta Materialia,2024,251.

Guo，Chuan.,Zhou，Yang.,Xu，Zhen.,Li，Yu.,Li，Gan.,...&Zhu，Qiang.(2024).Macro Co-Al-W-based superalloy single-crystal fabrication using selective laser melting.Scripta Materialia,251.

Guo，Chuan,et al."Macro Co-Al-W-based superalloy single-crystal fabrication using selective laser melting".Scripta Materialia 251(2024).