This study thoroughly examines the influence of conventional and selective laser melting (SLM) routes and surface mechanical attrition treatment (SMAT) on the microstructural and electrochemical properties of 316L steel. Compared to wrought specimens, the SLM specimens exhibit significantly smaller grains (∼41 vs. ∼83 µm) and higher dislocation density (∼7.2 × 1013 vs. ∼3.7 × 1012 m−2). Both specimens show nearly doubled surface hardness after SMAT, with the SLM surface displaying a ∼30 nm grain size and minimal α’ phase. The microstructure significantly influences passivation and corrosion behaviour. The SLM specimens exhibit superior electrochemical characteristics to wrought counterparts in SMATed (0.00299 mmpy) and non-SMATed (0.00771 mmpy) conditions. SMAT effectively eliminates surface porosity, enhancing the passivation and corrosion resistance of SLM steel.
BaddooN. Stainless steel in construction: a review of research, applications, challenges and opportunities. J Constr Steel Res2008; 64: 1199–1206.
2.
ZinkleSJWasG. Materials challenges in nuclear energy. Acta Mater2013; 61: 735–758.
3.
SaeidiKNeikterMOlsénJ, et al.316L stainless steel designed to withstand intermediate temperature. Mater Des2017; 135: 1–8.
4.
ZhangHHuangCWangG, et al.Comparison of energy consumption between hybrid deposition & micro-rolling and conventional approach for wrought parts. J Cleaner Prod2021; 279: 123307.
5.
SingSLAnJYeongWY, et al.Laser and electron-beam powder-bed additive manufacturing of metallic implants: a review on processes, materials and designs. J Orthop Res2016; 34: 369–385.
6.
JiaHSunHWangH, et al.Scanning strategy in selective laser melting (SLM): a review. Int J Adv Manuf Technol2021; 113: 2413–2435.
7.
RevillaRIVan CalsterMRaesM, et al.Microstructure and corrosion behavior of 316L stainless steel prepared using different additive manufacturing methods: a comparative study bringing insights into the impact of microstructure on their passivity. Corros Sci2020; 176: 108914.
8.
HaghdadiNLalehMMoyleM, et al.Additive manufacturing of steels: a review of achievements and challenges. J Mater Sci2021; 56: 64–107.
9.
JoshiMDKumarVSinghI, et al.Tribological response of mechanical attrition treated surface of AISI 316L steel: the role of velocity of colliding balls. J Tribol2021; 143: 031701.
10.
YeganehMShahryariZTalib KhanjarA, et al.Inclusions and segregations in the selective Laser-melted alloys: a review. Coatings2023; 13: 1295.
11.
CasalinoGCampanelliSContuzziN, et al.Experimental investigation and statistical optimisation of the selective laser melting process of a maraging steel. Opt Laser Technol2015; 65: 151–158.
12.
WangDSongCYangY, et al.Investigation of crystal growth mechanism during selective laser melting and mechanical property characterization of 316L stainless steel parts. Mater Des2016; 100: 291–299.
13.
DuanZManCDongC, et al.Pitting behavior of SLM 316L stainless steel exposed to chloride environments with different aggressiveness: pitting mechanism induced by gas pores. Corros Sci2020; 167: 108520.
14.
ZhaoCBaiYZhangY, et al.Influence of scanning strategy and building direction on microstructure and corrosion behaviour of selective laser melted 316L stainless steel. Mater Des2021; 209: 109999.
15.
FerganiOBrotanVBambachM, et al.Texture evolution in stainless steel processed by selective laser melting and annealing. Mater Sci Technol2018; 34: 2223–2230.
16.
ÖzerG. Heat treatment, microstructure and corrosion relationship on 316L SS produced by AM. Mater Sci Technol2023; 39: 671–682.
17.
BarkiaBAubryPHaghi-AshtianiP, et al.On the origin of the high tensile strength and ductility of additively manufactured 316L stainless steel: multiscale investigation. J Mater Sci Technol2020; 41: 209–218.
18.
QueZChangLSaarioT, et al.Localised electrochemical processes on laser powder bed fused 316 stainless steel with various heat treatments in high-temperature water. Addit Manuf2022; 60: 103205.
19.
LiuPZhangQ-HWatanabeY, et al.A critical review of the recent advances in inclusion-triggered localized corrosion in steel. npj Mater Degrad2022; 6: 81.
20.
SunZTanXTorSB, et al.Simultaneously enhanced strength and ductility for 3D-printed stainless steel 316L by selective laser melting. NPG Asia Mater2018; 10: 127–136.
21.
WangCTanXLiuE, et al.Process parameter optimization and mechanical properties for additively manufactured stainless steel 316L parts by selective electron beam melting. Mater Des2018; 147: 157–166.
22.
GhoshSBibhanshuNSuwasS, et al.Surface mechanical attrition treatment of additively manufactured 316L stainless steel yields gradient nanostructure with superior strength and ductility. Mater Sci Eng A2021; 820: 141540.
23.
WangGLiuQRaoH, et al.Influence of porosity and microstructure on mechanical and corrosion properties of a selectively laser melted stainless steel. J Alloys Compd2020; 831: 154815.
24.
VignalVVoltzCThiébautS, et al.Pitting corrosion of type 316L stainless steel elaborated by the selective laser melting method: influence of microstructure. J Mater Eng Perform2021; 30: 5050–5058.
25.
KongDDongCNiX, et al.Mechanical properties and corrosion behavior of selective laser melted 316L stainless steel after different heat treatment processes. J Mater Sci Technol2019; 35: 1499–1507.
26.
YeganehMRezvaniMHLaribaghalSM. Electrochemical behavior of additively manufactured 316L stainless steel in H2SO4 solution containing methionine as an amino acid. Colloids Surf, A2021; 627: 127120.
27.
KumarVJoshiMDPruncuC, et al.Microstructure and tribological response of selective laser melted AISI 316L stainless steel: the role of severe surface deformation. J Mater Eng Perform2021; 30: 5170–5183.
28.
NiXKongDWuW, et al.Corrosion behavior of 316L stainless steel fabricated by selective laser melting under different scanning speeds. J Mater Eng Perform2018; 27: 3667–3677.
29.
KumarVPruncuCIWangY, et al.The role of microstructure modifications on electrochemical and plasma-nitriding behaviour of 316L steel produced by laser powder bed fusion. Philos Mag2023; 103: 1855–1896.
30.
YangDKanXGaoP, et al.Influence of porosity on mechanical and corrosion properties of SLM 316L stainless steel. Appl Phys A: Mater Sci Process2022; 128: 1–9.
31.
SanderGBabuAGaoX, et al.On the effect of build orientation and residual stress on the corrosion of 316L stainless steel prepared by selective laser melting. Corros Sci2021; 179: 109149.
32.
VukkumVChristudasjustusJDarwishA, et al.Enhanced corrosion resistance of additively manufactured stainless steel by modification of feedstock. npj Mater Degrad2022; 6: 2.
33.
GuptaRBirbilisN. The influence of nanocrystalline structure and processing route on corrosion of stainless steel: a review. Corros Sci2015; 92: 1–15.
34.
LüAZhangYLiY, et al.Effect of nanocrystalline and twin boundaries on corrosion behavior of 316L stainless steel using SMAT. Acta Metall Sin (Engl Lett)2006; 19: 183–189.
35.
WeiYCuiHWeiH, et al.Improving mechanical properties for pure irons by local surface mechanical attrition treatment. Mater Sci Technol2019; 35: 1257–1264.
36.
LuKLuJ. Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment. Mater Sci Eng A2004; 375: 38–45.
37.
OlugbadeTOLuJ. Literature review on the mechanical properties of materials after surface mechanical attrition treatment (SMAT). Nano Mater Sci2020; 2: 3–31.
38.
KumarVSharmaAHosmaniSS, et al.Effect of ball size and impact velocity on the microstructure and hardness of surface mechanical attrition–treated 304L steel: experiment and finite element simulations. Int J Adv Manuf Technol2022; 120: 3251–3267.
39.
KumarVPruncuCIWangY, et al.The response of 316 L steel manufactured by selective laser melting route to high-temperature oxidation behaviour: the role of microstructure modification. Mater Charact2024; 207: 113531.
40.
GuanLYeZZhongJ, et al.Enhancement of corrosion resistance of 304L stainless steel treated by massive laser shock peening. Opt Laser Technol2022; 154: 108319.
41.
LuJQiHLuoK, et al.Corrosion behaviour of AISI 304 stainless steel subjected to massive laser shock peening impacts with different pulse energies. Corros Sci2014; 80: 53–59.
42.
GuDDMeinersWWissenbachK, et al.Laser additive manufacturing of metallic components: materials, processes and mechanisms. Int Mater Rev2012; 57: 133–164.
43.
TasciogluEKarabulutYKaynakY. Influence of heat treatment temperature on the microstructural, mechanical, and wear behavior of 316L stainless steel fabricated by laser powder bed additive manufacturing. Int J Adv Manuf Technol2020; 107: 1947–1956.
44.
YusufSMChenYYangS, et al.Microstructural evolution and strengthening of selective laser melted 316L stainless steel processed by high-pressure torsion. Mater Charact2020; 159: 110012.
45.
HermasA. XPS Analysis of the passive film formed on austenitic stainless steel coated with conductive polymer. Corros Sci2008; 50: 2498–2505.
46.
MiloševI. Effect of complexing agents on the electrochemical behaviour of orthopaedic stainless steel in physiological solution. J Appl Electrochem2002; 32: 311–320.
47.
SinghDBashaDASinghA, et al.Microstructural and passivation response of severely deformed AISI 304 steel surface: the role of surface mechanical attrition treatment. J Mater Eng Perform2020; 29: 6898–6911.
48.
BahlSSuwasSUngarT, et al.Elucidating microstructural evolution and strengthening mechanisms in nanocrystalline surface induced by surface mechanical attrition treatment of stainless steel. Acta Mater.2017; 122: 138–151.
49.
BimliSMulaniSRChoudharyE, et al.Perovskite BaSnO3 nanoparticles for solar-driven bi-functional photocatalytic activity: PEC water splitting and wastewater treatment. Int J Hydrogen Energy2024; 51: 1497–1507.
50.
LiDWangJChenD. Influence of pH value on the structure and electronic property of the passive film on 316L SS in the simulated cathodic environment of proton exchange membrane fuel cell (PEMFC). Int J Hydrogen Energy2014; 39: 20105–20115.
51.
IswantoPAkhyarHFaqihudinA. Effect of shot peening on microstructure, hardness, and corrosion resistance of AISI 316L. J Achiev Mater Manuf Eng2018; 89: 19–26.
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