Phase Balance and Properties of 2205 Duplex Stainless Steel Regulated by MnN Gradient Content Based on High-throughput Strategy

WANG Jinlei; GUO Yanbing; ZHANG Wang; TANG Xin

doi:10.3969/j.issn.1674-6457.2026.10.012

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Journal of Netshape Forming Engineering ›› 2026, Vol. 18 ›› Issue (10) : 123-131. DOI: 10.3969/j.issn.1674-6457.2026.10.012

Iron and Steel Forming

Phase Balance and Properties of 2205 Duplex Stainless Steel Regulated by MnN Gradient Content Based on High-throughput Strategy

WANG Jinlei¹, GUO Yanbing^2,*, ZHANG Wang¹, TANG Xin²

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Abstract

The work aims to employ the high-throughput laser cladding technology to fabricate compositional samples with a continuously gradient-changing manganese nitride (MnN) content on a single sample through interleaved cladding, to solve the problem that during the preparation of 2205 duplex stainless steel (DSS) by laser cladding, rapid non-equilibrium solidification easily inhibits the δ→γ phase transformation, leading to an excessively high proportion of ferrite in the cladded microstructure and disrupting its phase balance and properties. By means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), etc., the evolution laws of microstructure, hardness and corrosion resistance in the direction of the compositional gradient were systematically characterized. With the gradient increase of MnN content, the proportion of austenite (γ) phase increased from 11.2% to 41.8%, achieving the regulation of the two-phase proportion. When the two-phase proportion approached 1∶1 (corresponding to sample 6), the material obtained the optimal comprehensive properties. The micro-hardness reached 280 HV, and the corrosion resistance was the best, with the lowest self-corrosion current density of 1.9×10^-7 A/cm². This study indicates that using MnN as a composite additive can effectively compensate for the lack of austenite caused by rapid solidification during laser cladding and regulate the phase balance. More importantly, the high-throughput compositional gradient strategy adopted has successfully achieved a rapid and continuous mapping of the “composition, microstructure and property” relationship. This method improves the efficiency of alloy development and provides an efficient solution for targeted alloy design based on in-situ powder mixing.

Key words

laser cladding / 2205 duplex stainless steel / compositional gradient / high-throughput screening / manganese nitride (MnN)

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WANG Jinlei, GUO Yanbing, ZHANG Wang, TANG Xin. Phase Balance and Properties of 2205 Duplex Stainless Steel Regulated by MnN Gradient Content Based on High-throughput Strategy[J]. Journal of Netshape Forming Engineering. 2026, 18(10): 123-131 https://doi.org/10.3969/j.issn.1674-6457.2026.10.012

References

[1] GUO L Q, ZHAO X M, LI M, et al.Annealing Effects on the Microstructure and Magnetic Domain Structures of Duplex Stainless Steel Studied by in Situ Technique[J]. Applied Surface Science, 2012, 259: 213-218.
[2] MAURYA A K, CHHIBBER R, PANDEY C.Heat Input Effect on Dissimilar Super Duplex Stainless Steel (UNS S32750) and Nitronic Steel (N 50) Gas Tungsten Arc Weld: Mechanism, Microstructure, and Mechanical Properties[J]. Journal of Materials Engineering and Performance, 2023, 32(12): 5283-5316.
[3] YANG R Z, ZHAI R Z, REN S F, et al.Evolution and Healing Mechanism of 1Cr₂₂Mn16N High Nitrogen Austenitic Stainless Steel Interface Microstructure during Plastic Deformation Bonding[J]. Acta Metallurgica Sinica, 2024, 60(7): 915-925.
[4] 李坤, 郑嘉懿, 杨庆超, 等. 316L不锈钢应力腐蚀研究进展[J]. 有色金属材料与工程, 2023, 44(5): 36-46.
LI K, ZHENG J Y, YANG Q C, et al.Research Progress on Stress Corrosion of 316L Stainless Steel[J]. Nonferrous Metal Materials and Engineering, 2023, 44(5): 36-46.
[5] 卢君, 常云峰, 刘永华, 等. 不同激光熔覆工艺对液压油缸组织与性能的影响研究[J]. 精密成形工程, 2025, 17(5): 166-176.
LU J, CHANG Y F, LIU Y H, et al.Influence of Different Laser Cladding Processes on Microstructure and Properties of Hydraulic Cylinders[J]. Journal of Netshape Forming Engineering, 2025, 17(5): 166-176.
[6] LUO H, DONG C F, XIAO K, et al.Characterization of Passive Film on 2205 Duplex Stainless Steel in Sodium Thiosulphate Solution[J]. Applied Surface Science, 2011, 258(1): 631-639.
[7] CHANG G R, LIU M X, MENG Y, et al.Study of WC Microalloying Behavior and Tribological Property of Homogeneous Laser Cladding Layer on H13 Steel[J]. Materials Reports, 2023, 37(22):15-25.
[8] SU S, HAN P, YANG S W, et al.Crystallographic Understanding of the Effect of Ni Content on the Hardenability of High-Strength Low-Alloy Steel[J]. Acta Metallurgica Sinica, 2024, 60(6): 789-801.
[9] GORDON J, HOCHHALTER J, HADEN C, et al.Enhancement in Fatigue Performance of Metastable Austenitic Stainless Steel through Directed Energy Deposition Additive Manufacturing[J]. Materials & Design, 2019, 168: 107630.
[10] KONG D C, DONG C F, WEI S L, et al.About Metastable Cellular Structure in Additively Manufactured Austenitic Stainless Steels[J]. Additive Manufacturing, 2021, 38: 101804.
[11] GAO Q H, LI Z,WANG Z, et al.Research on Progress of Laser Cladding Technology[J]. New Technology & New Process, 2021(6): 5-7.
[12] GAO C D, LI S, LIU L, et al.Dual Alloying Improves the Corrosion Resistance of Biodegradable Mg Alloys Prepared by Selective Laser Melting[J]. Journal of Magnesium and Alloys, 2021, 9(1): 305-316.
[13] PRAKASH L, KUMAR C, GOGAI D, et al.Laser Beam Welding of Inconel Alloys: A Review[J]. Journal of Physics: Conference Series, 2024, 2818(1): 012047.
[14] SOCIETY A W, BHANU V, GUPTA A, et al.Microstructure-Linked Mechanical Properties of P91-Incoloy 800HT Dissimilar Metal Welds[J]. Welding Journal, 2024, 103(10): 283-297.
[15] SHEN H Y, WANG L, SUN J C.Effect of Plasma Nitriding at Low Temperature on the Corrosion Resistance and Conductivity of 2205 Duplex Stainless Steel[J]. Surface Engineering, 2021, 37(6): 749-754.
[16] ZHANG Y Q, CHENG F J, WU S J.Improvement of Pitting Corrosion Resistance of Wire Arc Additive Manufactured Duplex Stainless Steel through Post-Manufacturing Heat-Treatment[J]. Materials Characterization, 2021, 171: 110743.
[17] ŠIMEKOVÁ B, DOMÁNKOVÁ M, KOVAŘÍKOVÁ I, et al. Microstructural and Mechanical Characterization of the Laser Beam Welded SAF 2507 Super-Duplex Stainless Steel[J]. Metals, 2024, 14(10): 1184.
[18] CHAN W K, KWOK C T, LO K H.Effect of Laser Surface Melting and Subsequent Re-Aging on Microstructure and Corrosion Behavior of Aged S32950 Duplex Stainless Steel[J]. Materials Chemistry and Physics, 2018, 207: 451-464.
[19] LALEH M, HAGHDADI N, HUGHES A E, et al.Enhancing the Repassivation Ability and Localised Corrosion Resistance of an Additively Manufactured Duplex Stainless Steel by Post-Processing Heat Treatment[J]. Corrosion Science, 2022, 198: 110106.
[20] 陈彦龙, 舒林森, 宋少东. 304L/316异种钢薄板激光增材焊接工艺及性能研究[J]. 激光与光电子学进展, 2022, 59(23): 2314005.
CHEN Y L, SHU L S, SONG S D.Study on Laser Additive Welding Process and Properties of 304L/316 Dissimilar Steel Sheets[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2314005.
[21] HUANG J, XIAO X P, XIONG S J, et al.Effect of Ni and Mn Contents on the Microstructure and Properties of Cu-Ni-Mn-P Alloy[J]. Journal of Alloys and Compounds, 2022, 901: 163636.
[22] HUANG G Q, HE H L, LI B.Multi-Material Laser Powder Bed Fusion (MM-LPBF) Additive Manufacturing of Dual-Phase Heterostructure Steel[J]. CIRP Journal of Manufacturing Science and Technology, 2025, 61: 386-399.
[23] ZHANG X Y, WANG K H, ZHOU Q, et al.Microstructure and Mechanical Properties of TOP-TIG-Wire and Arc Additive Manufactured Super Duplex Stainless Steel (ER2594)[J]. Materials Science and Engineering: A, 2019, 762: 138097.
[24] SALVETR P, MSALLAMOVÁ Š, BRÁZDA M. Effect of Solution Annealing on Microstructure, Tensile and Corrosion Properties of SDSS Deposited by Directed Energy Deposition[J]. Crystals, 2024, 14(10): 36-39.
[25] TOOR I U H, HYUN P J, KWON H S. Development of High Mn-N Duplex Stainless Steel for Automobile Structural Components[J]. Corrosion Science, 2008, 50(2): 404-410.
[26] BADKOOBEH F, MOSTAAN H, NEMATZADEH F, et al.Nd: YAG Laser Beam Welding of UNS N07718 Superalloy and UNS S32304 Duplex Stainless Steel: Phase Transformations and Mechanical Properties of Dissimilar Joints[J]. Optics & Laser Technology, 2024, 170: 110254.