南方科技大学知识苑(SUSTech KC): Laser powder bed fusion of 2507 duplex stainless steel: Microstructure, mechanical properties, and corrosion performance

题名	Laser powder bed fusion of 2507 duplex stainless steel: Microstructure, mechanical properties, and corrosion performance
作者	Zhu, Xin-xin 1; Dong, Liang 1; Li, Gan 2 ; Li, Xing-gang3
通讯作者	Dong, Liang; Li, Xing-gang
发表日期	2024-10
DOI	10.1016/j.msea.2024.147084
发表期刊	Materials Science and Engineering: A 影响因子和分区
ISSN	0921-5093
卷号	913
摘要	Duplex stainless steels offer a unique combination of advantages derived from both ferritic and austenitic structures, providing excellent mechanical properties and corrosion resistance. Nevertheless, conventional metallurgical techniques such as casting and rolling encounter challenges when it comes to the rapid fabrication of intricate components. In this study, we explore the microstructure, mechanical properties, and corrosion performance of 2507 duplex stainless steel manufactured through laser powder bed fusion (L-PBF). Through meticulous refinement of L-PBF parameters, we successfully achieved a dense sample featuring a hardness exceeding 400 HV, a relative density surpassing 98 %, and a surface roughness below 15 μm. This was obtained using a scanning speed of 700 mm/s and a laser power of 210 W. Due to the high cooling rate of L-PBF process, L-PBFed 2507 exhibits a ferritic microstructure distinct from that of rolled 2507 duplex stainless steel. Additionally, a considerable presence of internal dislocations can be observed in the L-PBFed 2507 material. The 2507 stainless steel exhibited an outstanding yield strength of 1198 MPa and an ultimate tensile strength of 1269 MPa, surpassing the performance of rolled 2507 duplex stainless steel. The corrosion current density was nearly negligible (approximately 10⁻⁶ A cm⁻²), with a passivation window expanding 1.2 V relative to the corrosion potential and a passivation platform below 10⁻⁴ A cm⁻². These corrosion characteristics were comparable to those observed in rolled 2507 duplex stainless steel. This research demonstrates the suitability of L-PBFed 2507 stainless steel in environments requiring high strength and corrosion resistance, thereby opening up avenues for high-performance components in advanced engineering applications. © 2024 Elsevier B.V.
收录类别	SCI ; EI
语种	英语
学校署名	通讯
资助项目	Laser powder bed fusion (L-PBF) represents a transformative manufacturing technology that revolutionizes the production of metallic components by utilizing layer-by-layer accumulation of discrete materials. In this innovative process, a high-energy laser precisely melts the powder, which rapidly solidifies upon cooling [11]. Unlike the conventional subtractive manufacturing methods that involve cutting or molding, L-PBF is purpose-built for precise component construction. This methodology not only streamlines product development cycles but also enables the creation of near-net-shape components [12,13]. These components, characterized by minimal material waste, customizable features, and intricate designs, address resource inefficiencies and contribute to environmental conservation. Therefore, optimizing L-PBF parameters for processing duplex stainless steel is crucial, along with gaining a comprehensive understanding of the microstructure and associated properties of the resulting parts. These endeavors not only maximize the potential of these components but also make substantive contributions to addressing ecological challenges on Earth. While the existing research on utilizing L-PBF for duplex stainless steel fabrication is limited, the available studies provide substantial evidence supporting the assertion that the quality of duplex stainless steels produced via L-PBF is comparable to those manufactured through traditional processes [14–16]. For instance, Freitas et al. [14] demonstrated successful production of dense 2205 duplex stainless steel forming parts using gas atomization-derived powder. The resulting samples exhibited a notable hardness of 290 ± 18 HV and a specific wear rate of 5 ± 1 (× 10−4 mm3 N−1 m−1), surpassing commercially available 2205 steel. Another comprehensive analysis by Jiang et al. [15] examined the microstructure of L-PBF-formed 22CrDSS and its heat-treated counterparts, revealing electrochemical responses comparable to wrought samples through cyclic kinetic potential polarization. Furthermore, Nigon et al. [16] successfully annealed 2205 duplex stainless steel, achieving a remarkable relative density of 99.1 ± 0.3 %. However, despite these advancements, there is still a critical gap in our understanding of the processing parameters and specific properties related to 2507 duplex stainless steel produced through L-PBF.This work was supported by the National Natural Science Foundation of China (No. 52074157), Department of Education of Guangdong Province (No. 2023KTSCX121), and Shenzhen Science and Technology Programs (No. JSGG20210802154210032, No. JCYJ20210324104608023, and No. JSGG20180508152608855), and Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX24_1677). The authors would also like to acknowledge the technical support from Southern University of Science and Technology Core Research Facilities.
出版者	Elsevier Ltd
EI入藏号	20243416900661
EI主题词	Austenitic stainless steel ; Brinell Hardness ; Corrosion resistance ; Corrosive effects ; Electrochemical corrosion ; Ferritic stainless steel ; Hydroelasticity ; Laser chemistry ; Laser cooling ; Passivation ; Steel corrosion ; Steel powder metallurgy ; Tensile strength
EI分类号	:1301.5 ; :201.6.1 ; :201.9.1 ; :201.9.2.1 ; :202.5.3 ; :214 ; :214.1.3 ; Lasers:744 ; Lasers Other Than Gas, Liquid, Solid State or Semiconductor:744.6 ; :801.3.1 ; Chemical Reactions:802.2
ESI学科分类	MATERIALS SCIENCE
来源库	EV Compendex
引用统计
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/807039
专题	工学院_机械与能源工程系南方科技大学工学院_材料科学与工程系
作者单位	1.College of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou; 213000, China 2.Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen; 518055, China 3.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
通讯作者单位	材料科学与工程系
推荐引用方式 GB/T 7714	Zhu, Xin-xin,Dong, Liang,Li, Gan,et al. Laser powder bed fusion of 2507 duplex stainless steel: Microstructure, mechanical properties, and corrosion performance[J]. Materials Science and Engineering: A,2024,913.
APA	Zhu, Xin-xin,Dong, Liang,Li, Gan,&Li, Xing-gang.(2024).Laser powder bed fusion of 2507 duplex stainless steel: Microstructure, mechanical properties, and corrosion performance.Materials Science and Engineering: A,913.
MLA	Zhu, Xin-xin,et al."Laser powder bed fusion of 2507 duplex stainless steel: Microstructure, mechanical properties, and corrosion performance".Materials Science and Engineering: A 913(2024).