Hydrogen Effects in Equiatomic CrFeNiMn Alloy Fabricated by Laser Powder Bed Fusion

被引：11

作者：

Yang, Xuan ^{[1
]}

Yagodzinskyy, Yuriy ^{[2
]}

Ge, Yanling ^{[1
]}

Lu, Eryang ^{[3
]}

Lehtonen, Joonas ^{[1
]}

Kollo, Lauri ^{[4
]}

Hannula, Simo-Pekka ^{[1
]}

机构：

[1] Aalto Univ, Dept Chem & Mat Sci, Sch Chem Engn, POB 16100, FI-00076 Espoo, Finland

[2] Aalto Univ, Dept Mech Engn, Sch Engn, POB 11000, FI-00076 Espoo, Finland

[3] Univ Helsinki, Dept Phys, POB 43, FI-00014 Helsinki, Finland

[4] Tallinn Univ Technol, Dept Ind & Mech Engn, EE-19086 Tallinn, Estonia

来源：

METALS | 2021年 / 11卷 / 06期

关键词：

high-entropy alloys; laser powder bed fusion; selective laser melting; thermal desorption spectroscopy; hydrogen charging; HIGH-ENTROPY ALLOY; STACKING-FAULT ENERGY; MECHANICAL-PROPERTIES; STAINLESS-STEELS; GASEOUS-HYDROGEN; RESISTANCE; STABILITY; MICROSTRUCTURE; EMBRITTLEMENT; DEFORMATION;

D O I：

10.3390/met11060872

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study investigates the effects of laser powder bed fusion (LPBF) on the hydrogen uptake of the face-centered cubic (FCC) equiatomic CrFeNiMn multicomponent alloy after cathodic hydrogen charging (HC). Hydrogen desorption was evaluated using thermal desorption spectroscopy (TDS), and microstructural changes after the TDS test were examined. Results reveal that the amount of hydrogen absorbed by LPBF CrFeNiMn alloy was significantly higher than that in pulsed electric current sintered (PECS) CrFeNiMn alloy or in conventional 316L austenitic stainless steel. The observations are ascribed to the differences in the amount of hydrogen absorbed by the multicomponent lattice, dislocation densities, width of segregation range at cell walls created by the rapid cooling in LBPF, and vacancies remaining after cooling to room temperature. A hydrogen-charged LBPF transmission electron microscope (TEM) specimen was also characterized. Stacking faults and cracks along the (111)-planes of austenite were observed. Scanning electron microscopy (SEM) of the surface of the TDS-tested samples also indicated hydrogen-induced cracks and hydrogen-induced submicron pits at the grain boundary inclusions.

引用

页数：14

共 50 条

[1]

[Anonymous], 2016, HIGH ENTROPY ALLOYS, DOI DOI 10.1007/978-3-319-27013-5_6

[2] Hydrogen susceptibility of nano-sized oxide dispersed austenitic steel for fusion reactor [J].

Baek, Seung-Wook ;

Song, Eun Ju ;

Kim, Jung Hyun ;

Lee, Yun-Hee ;

Ryu, Kwon Sang ;

Kim, Sa-Woong .

FUSION ENGINEERING AND DESIGN, 2017, 121 :105-110

[3]

Baranowskip B, 1971, J PHYS F MET PHYS, V1, P5

[4] The use of high-entropy alloys in additive manufacturing [J].

Brif, Yevgeni ;

Thomas, Meurig ;

Todd, Iain .

SCRIPTA MATERIALIA, 2015, 99 :93-96

[5] Microstructure, Mechanical Properties, and Fatigue Fracture Characteristics of High-Fracture-Resistance Selective Laser Melting Al-Ni-Cu Alloys [J].

Chang, Kai-Chieh ;

Zhao, Jun-Ren ;

Hung, Fei-Yi .

METALS, 2021, 11 (01) :1-13

[6] The effect of laser energy input on the microstructure, physical and mechanical properties of Ti-6Al-4V alloys by selective laser melting [J].

Do, Dang Khoa ;

Li, Peifeng .

VIRTUAL AND PHYSICAL PROTOTYPING, 2016, 11 (01) :41-47

[7] Influence of the Energy Density for Selective Laser Melting on the Microstructure and Mechanical Properties of Stainless Steel [J].

Donik, Crtomir ;

Kraner, Jakob ;

Paulin, Irena ;

Godec, Matjaz .

METALS, 2020, 10 (07) :1-19

[8] High-entropy alloy CoCrFeMnNi produced by powder metallurgy [J].

Eissmann, Nadine ;

Kloeden, Burghardt ;

Weissgaerber, Thomas ;

Kieback, Bernd .

POWDER METALLURGY, 2017, 60 (03) :184-197

[9] INFLUENCE OF AUSTENITE STABILITY ON THE HYDROGEN EMBRITTLEMENT AND STRESS-CORROSION CRACKING OF STAINLESS-STEEL [J].

ELIEZER, D ;

CHAKRAPANI, DG ;

ALTSTETTER, CJ ;

PUGH, EN .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1979, 10 (07) :935-941

[10]

Eliezer D., 2005, P 11 INT C FRACT TUR

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