L-DED René N5 Single-Crystal Superalloy

Dendrite Arm Spacing Refined by Over 10×

Crack-free single crystals grown epitaxially with a flat-top laser beam show refined dendrites and reduced elemental segregation, promising enhanced high-temperature mechanical performance.

Wang, Rui · Wang, Jiang · Cao, Tingwei · Zhao, Ruixin · Lu, Xufei · Wei, Guan · Hu, Tao · Shuai, Sansan · Xu, Songzhe · Xuan, Weidong · Panwisawas, Chinnapat · Chen, Chaoyue · Ren, Zhongming

Additive Manufacturing 2023

Specifications

grain boundary fraction

{'zh': '98.5', 'en': '>98.5'} %

spacing m as-cast

{'zh': '约350', 'en': '~350'} µm

precipitates average size

{'zh': '', 'en': '101'} nm

偏析较铸态降低

{'zh': '1100', 'en': ''} W