Design of hierarchical structures and mechanical properties of 316 L stainless steel FCC lattice structures by laser powder bed fusion

Jiandong Wang; Chenxinwei Wang; Yian Shen; Weiming Cui; Qiheng Bai; Chengbo Pan; Xu Li; Liqun Li; Peng He

doi:10.1016/j.matlet.2026.141134

Design of hierarchical structures and mechanical properties of 316 L stainless steel FCC lattice structures by laser powder bed fusion

Jiandong Wang^*
, Chenxinwei Wang
, Yian Shen
, Weiming Cui
, Qiheng Bai
, Chengbo Pan
, Xu Li
, Liqun Li
, Peng He

^*Corresponding author for this work

School of Materials Science and Engineering

College of Materials Science and Chemical Engineering, Harbin Engineering University
Harbin Engineering University
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

To mitigate stress concentration at the nodes of 316 L stainless steel FCC lattice structures by laser-based powder bed (LPBF). two hierarchical derivatives (FCC-H and FCC-VH) were designed by adding auxiliary struts in two orientations at constant relative density. Combined finite element simulations and experiments were conducted to analyze how the hierarchical design influenced nodal stress distribution and mechanical properties. The auxiliary struts redirected stress flow paths, enabling multi-stage load transfer and stress homogenization. Both FCC-H and FCC-VH outperformed the original FCC lattice, with FCC-VH exhibiting the greatest improvement.

Original language	English
Article number	141134
Journal	Materials Letters
Volume	420
DOIs	https://doi.org/10.1016/j.matlet.2026.141134
State	Published - 1 Oct 2026

Keywords

Finite element simulation
Laser powder bed fusion
Lattice structures
Mechanical properties
Structural design

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10.1016/j.matlet.2026.141134

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title = "Design of hierarchical structures and mechanical properties of 316 L stainless steel FCC lattice structures by laser powder bed fusion",

abstract = "To mitigate stress concentration at the nodes of 316 L stainless steel FCC lattice structures by laser-based powder bed (LPBF). two hierarchical derivatives (FCC-H and FCC-VH) were designed by adding auxiliary struts in two orientations at constant relative density. Combined finite element simulations and experiments were conducted to analyze how the hierarchical design influenced nodal stress distribution and mechanical properties. The auxiliary struts redirected stress flow paths, enabling multi-stage load transfer and stress homogenization. Both FCC-H and FCC-VH outperformed the original FCC lattice, with FCC-VH exhibiting the greatest improvement.",

keywords = "Finite element simulation, Laser powder bed fusion, Lattice structures, Mechanical properties, Structural design",

author = "Jiandong Wang and Chenxinwei Wang and Yian Shen and Weiming Cui and Qiheng Bai and Chengbo Pan and Xu Li and Liqun Li and Peng He",

note = "Publisher Copyright: {\textcopyright} 2026 Elsevier B.V.",

year = "2026",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2026.141134",

language = "英语",

volume = "420",

journal = "Materials Letters",

issn = "0167-577X",

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TY - JOUR

T1 - Design of hierarchical structures and mechanical properties of 316 L stainless steel FCC lattice structures by laser powder bed fusion

AU - Wang, Jiandong

AU - Wang, Chenxinwei

AU - Shen, Yian

AU - Cui, Weiming

AU - Bai, Qiheng

AU - Pan, Chengbo

AU - Li, Xu

AU - Li, Liqun

AU - He, Peng

PY - 2026/10/1

Y1 - 2026/10/1

N2 - To mitigate stress concentration at the nodes of 316 L stainless steel FCC lattice structures by laser-based powder bed (LPBF). two hierarchical derivatives (FCC-H and FCC-VH) were designed by adding auxiliary struts in two orientations at constant relative density. Combined finite element simulations and experiments were conducted to analyze how the hierarchical design influenced nodal stress distribution and mechanical properties. The auxiliary struts redirected stress flow paths, enabling multi-stage load transfer and stress homogenization. Both FCC-H and FCC-VH outperformed the original FCC lattice, with FCC-VH exhibiting the greatest improvement.

AB - To mitigate stress concentration at the nodes of 316 L stainless steel FCC lattice structures by laser-based powder bed (LPBF). two hierarchical derivatives (FCC-H and FCC-VH) were designed by adding auxiliary struts in two orientations at constant relative density. Combined finite element simulations and experiments were conducted to analyze how the hierarchical design influenced nodal stress distribution and mechanical properties. The auxiliary struts redirected stress flow paths, enabling multi-stage load transfer and stress homogenization. Both FCC-H and FCC-VH outperformed the original FCC lattice, with FCC-VH exhibiting the greatest improvement.

KW - Finite element simulation

KW - Laser powder bed fusion

KW - Lattice structures

KW - Mechanical properties

KW - Structural design

UR - https://www.scopus.com/pages/publications/105042740273

U2 - 10.1016/j.matlet.2026.141134

DO - 10.1016/j.matlet.2026.141134

M3 - 文章

AN - SCOPUS:105042740273

SN - 0167-577X

VL - 420

JO - Materials Letters

JF - Materials Letters

M1 - 141134

ER -

Design of hierarchical structures and mechanical properties of 316 L stainless steel FCC lattice structures by laser powder bed fusion

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Keywords

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