Enhancing dynamic property in additive manufactured IN738LC alloy through cell orientation control
Year: 2025
Type: article
Abstract: Cell structures are common substructures in additive-manufactured (AM) superalloys, yet their influence on high strain-rate dynamic behavior remains unclear. Herein, two IN738LC alloys with different cell orientations were fabricated via AM and assessed for dynamic behavior at strain rates of ∼105/s using flyer-plate impact tests. Results show that preferential cell growth along the building direction (BD) enhances spall strength by 12–13% (4.36∼4.51 GPa) compared to random orientations (3.91∼3.99 GPa). The enhancement arises from cell alignment along the BD. This alignment makes the cell wall, a damage nucleation site, parallel to the impact direction, restricting damage void coalescence and crack propagation.
Source: Materials Research Letters
Authors: Mingchuan Li, Jianfeng Gong, Rui Ma, Hongwei Ding, Zhiguo Li, Jun Ding, Liqun Li, Shuai Chang
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,459
Awards: G3116981860, G6959831142
OpenAlex ID: W4408219200