Effect of building direction on anisotropy of mechanical properties of GH4169 alloy fabricated by laser powder bed fusion

Dong, Zhichao; Ouyang, Peixuan; Zhang, Shuting; Liu, Lu; Li, Hang; Wu, Yanqiang

doi:10.1016/j.msea.2022.144430

Cited by 15 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, the grains are elongated and columnar in the plane along the building direction, while they are typically equiaxed in the plane perpendicular to the building direction. Therefore, the performance of the parts manufactured using PBF depends on their building direction [7]. Shamsdini et al [8] examined the microstructure and mechanical properties of 18Ni-300 maraging steel produced by LPBF, and they investigated the effects of building direction (vertical and horizontal).…”

Section: Introductionmentioning

confidence: 99%

Effect of Aging Temperature on Microstructure, Mechanical, and Wear Properties of 18Ni-300 Maraging Steel Produced by Powder Bed Fusion

Kwak,

Lim,

Heo

et al. 2024

Metals

View full text Add to dashboard Cite

Additive manufacturing technologies for metallic materials based on powder bed fusion have enormous industrial potential. In this study, we manufactured 18Ni-300 maraging steel using the powder bed fusion (PBF) process and investigated the effects of annealing temperatures of 430 °C, 490 °C, and 550 °C for 3 h on its microstructure, tensile fracture mechanism, and wear properties compared with the as-built specimen. The results show that annealing heat treatment effectively improved the dry sliding friction, wear properties, and room temperature tensile properties compared to the as-built specimen. Compared to other aging-treated samples, specimens that underwent heat treatment in optimal settings had superior properties. With optimal heat treatment, while melt pool boundaries remained, the cellular and columnar structures became finer compared to the un-treated specimens, and the number of dimples decreased. Consequently, the hardness and tensile strength improved by approximately 56.17% and 40.63%, respectively. The 18Ni-300 maraging steel sample that underwent heat treatment at optimal settings exhibited a coefficient of friction approximately 33.33% lower than the as-built alloy.

show abstract

Section: Introductionmentioning

confidence: 99%