Corrosion behavior of 316L austenitic steel processed by selective laser melting, hot-isostatic pressing, and casting

被引：107

作者：

Geenen, K. ^{[1
]}

Roettger, A. ^{[1
]}

Theisen, W. ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Inst Mat, Chair Mat Technol, Univ Str 150, D-44801 Bochum, Germany

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2017年 / 68卷 / 07期

关键词：

additive manufacturing; austenitic steel; corrosion resistance; hot-isostatic pressing; selective laser melting; STAINLESS-STEEL; MECHANICAL-PROPERTIES; POWDER; PARTS; MICROSTRUCTURE; 304L;

D O I：

10.1002/maco.201609210

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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, which negatively influenced corrosion resistance. Additional HIP treatment further worsened corrosion resistance. The HIP process does not significantly reduce porosity compared to the SLM process, which can be attributed to the argon atmosphere used when manufacturing the SLM samples. Nevertheless, it was possible to reduce the crack density via HIP treatment and the formerly lamellar oxides underwent spheroidization.

引用

页码：764 / 775

页数：12

共 19 条

[1]

[Anonymous], 2015, 643 DIN EN ISO

[2]

[Anonymous], 2014, G514 ASTM

[3] Influence of the microstructure on the corrosion resistance of plasma-nitrided austenitic stainless steel 304L and 316L [J].

Biehler, J. ;

Hoche, H. ;

Oechsner, M. ;

Kaestner, P. ;

Bunk, K. ;

Braeuer, G. .

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, 2014, 45 (10) :930-946

[4] Corrosion resistances and passivation of powder metallurgical and conventionally cast 316L and 2205 stainless steels [J].

Fredriksson, Wendy ;

Petrini, Daniel ;

Edstrom, Kristina ;

Bjorefors, Fredrik ;

Nyholm, Leif .

CORROSION SCIENCE, 2013, 67 :268-280

[5] CORROSION AND PROTECTION OF SINTERED METAL PARTS [J].

GABE, DR .

POWDER METALLURGY, 1977, 20 (04) :227-231

[6] CORROSION BEHAVIOR OF HOT-PRESSED AUSTENITIC STAINLESS-STEEL IN H2SO4 SOLUTIONS AT ROOM-TEMPERATURE [J].

ITZHAK, D ;

AGHION, E .

CORROSION SCIENCE, 1983, 23 (10) :1085-&

[7] Consolidation phenomena in laser and powder-bed based layered manufacturing [J].

Kruth, J. -P. ;

Levy, G. ;

Klocke, F. ;

Childs, T. H. C. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2007, 56 (02) :730-759

[8] Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder [J].

Liu, Yang ;

Yang, Yongqiang ;

Mai, Shuzhen ;

Wang, Di ;

Song, Changhui .

MATERIALS & DESIGN, 2015, 87 :797-806

[9] Experimental studies on selective laser melting of metallic parts [J].

Meier, H. ;

Haberland, Ch. .

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, 2008, 39 (09) :665-670

[10] Residual stresses in selective laser sintering and selective laser melting [J].

Mercelis, Peter ;

Kruth, Jean-Pierre .

RAPID PROTOTYPING JOURNAL, 2006, 12 (05) :254-265

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