Heterogeneous structures in a Ni-based superalloy with tailoring mechanical properties produced by a twin laser powder bed fusion system

Guo，Chuan1,2,3; Li，Zhuoyu1,2,4; Huang，Yuhe2,5; He，Minglin1; Li，Gan1,2,6; Li，Qingqing1,2; Zhou，Yang1,2; Zhou，Fan1,2; Ruan，Gang1,2; Wu，Wangqing4; Zhu，Qiang1,2

2022-12-15

10.1016/j.jallcom.2022.166983

JOURNAL OF ALLOYS AND COMPOUNDS   Impact Factor & Quartile

0925-8388

1873-4669

Powder bed fusion using a laser beam (PBF-LB) is a promising additive manufacturing (AM) technology, used to produce components with complex geometry and design freedom. The parts are built in a layer-by-layer fashion during PBF-LB, and changing the processing parameters within different layers can lead to the modification of microstructures and finally a great impact on the mechanical properties. Thus, PBF-LB provides the possibility for the customization of material properties by changing the microstructures of layers using different processing parameters. In this investigation, a twin PBF-LB system, i.e., with a low-power laser beam and a high-power laser beam in a machine, is used to produce fine and coarse microstructures using the Inconel 718 (IN718) alloy, respectively. The fine and coarse microstructures are alternately printed to form different heterogeneous structures. Correspondingly, different mechanical properties are achieved. The microstructures are analyzed using optical microscope (OM), scanning electron microscope (SEM), electron backscatter diffraction (EBSD) and numerical calculation. The defects generated by these 2 laser beams are simultaneously discussed. This study facilitates the tailoring of alloy properties using the PBF-LB technology to meet the users’ needs of multiple service conditions.

Heterogeneous structure Mechanical property Microstructure Nickel-based superalloy Powder bed fusion

SCI ; EI

English

First ; Corresponding

National Key Research and Development Program of China[2017YFB0702901];National Natural Science Foundation of China[52074157];National Natural Science Foundation of China[91860131];Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20170817111811303];Science, Technology and Innovation Commission of Shenzhen Municipality[KQTD20170328154443162];Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS201703031748354];

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000856591600003

ELSEVIER SCIENCE SA

20223612683954

Microstructure ; Nickel ; Nickel alloys ; Scanning electron microscopy ; Structural properties ; Superalloys

Structural Design:408 ; Metallurgy and Metallography:531 ; Nickel:548.1 ; Nickel Alloys:548.2 ; Laser Beam Interactions:744.8 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85137060091

Scopus

1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials,Shenzhen,518055,China
3.CityU-Shenzhen Futian Research Institute,Shenzhen,518045,China
4.School of Mechanical and Electrical Engineering,Central South University,Changsha,410083,China
5.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
6.Department of Mechanical Engineering,City University of Hong Kong,Kowloon,Tat Chee Avenue, Hong Kong,China

Guo，Chuan,Li，Zhuoyu,Huang，Yuhe,et al. Heterogeneous structures in a Ni-based superalloy with tailoring mechanical properties produced by a twin laser powder bed fusion system[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,927.

Guo，Chuan.,Li，Zhuoyu.,Huang，Yuhe.,He，Minglin.,Li，Gan.,...&Zhu，Qiang.(2022).Heterogeneous structures in a Ni-based superalloy with tailoring mechanical properties produced by a twin laser powder bed fusion system.JOURNAL OF ALLOYS AND COMPOUNDS,927.

Guo，Chuan,et al."Heterogeneous structures in a Ni-based superalloy with tailoring mechanical properties produced by a twin laser powder bed fusion system".JOURNAL OF ALLOYS AND COMPOUNDS 927(2022).