2017
DOI: 10.1002/maco.201609210
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Corrosion behavior of 316L austenitic steel processed by selective laser melting, hot‐isostatic pressing, and casting

Abstract: This study investigated the corrosion behavior of grade 316L austenitic steel processed by casting, hot isostatic pressing (HIP), selective laser melting (SLM), and SLM + HIP. Electrochemical results showed that the SLM‐densified specimen exhibited poorer corrosion resistance than specimens processed by casting and hot isostatic pressing in solution‐annealed condition. Microstructural investigations revealed that the SLM‐densified specimen had a fine‐grained microstructure but comparatively higher porosity, wh… Show more

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Cited by 102 publications
(63 citation statements)
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“…61,64,[73][74][75][76][77][78][79][80][81][82][83][84][85] Several researchers have, often with little to no experimental support, reported that porosity may significantly impact the pitting characteristics of alloys produced by AM. 61,[73][74][75][76][77] However, a mechanistic description of how pores (particularly unconnected pores) may assist in pit initiation/propagation is yet to be clarified. Similarly, solute segregation driven by the formation of cellular structures has also been proposed to be detrimental toward pitting of alloys manufactured by AM.…”
Section: Corrosion-december 2018mentioning
confidence: 99%
“…61,64,[73][74][75][76][77][78][79][80][81][82][83][84][85] Several researchers have, often with little to no experimental support, reported that porosity may significantly impact the pitting characteristics of alloys produced by AM. 61,[73][74][75][76][77] However, a mechanistic description of how pores (particularly unconnected pores) may assist in pit initiation/propagation is yet to be clarified. Similarly, solute segregation driven by the formation of cellular structures has also been proposed to be detrimental toward pitting of alloys manufactured by AM.…”
Section: Corrosion-december 2018mentioning
confidence: 99%
“…Porosity is reported to be a possible site for the initiation of localized corrosion in SLM 316L stainless steel . The corrosion behaviour has been systematically investigated as a function of the main laser parameters (laser power and scan speed), which mainly determine the amount and size of pores in the material.…”
Section: Introductionmentioning
confidence: 99%
“…To date, a wide range of materials have been processed by SLM, including stainless steels [5][6][7], Ni-based alloys [8][9][10], Ti-based alloys [11][12][13] and Al-based alloys [14][15][16]. Various reports have suggested improvements in mechanical properties for AM-fabricated parts compared to that of their traditional counterparts, including higher yield and tensile strengths [17,18], better corrosion resistance [19][20][21] and enhanced fatigue life [22]. Such improvements are attributed to the unique and very fine microstructure as a result of rapid solidification due to the short laser-material interaction time and high cooling rates of AM processes (10 3 -10 8 K s −1 ) [23][24][25].…”
Section: Introductionmentioning
confidence: 99%