Interface Characteristics and Mechanical Properties of Post-treated Directed Energy Deposition Laminated Composites

Laminated composites of IN718-95% IN718 + 5% (Cr 2 O 3  + 25% TiO 2 ) were fabricated by directed energy deposition, which were subjected to different posttreatment methods. The interfacial microstructures and mechanical properties of the laminated composites were studied by room temperature tensile...

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Bibliographic Details
Published inJournal of materials engineering and performance Vol. 32; no. 16; pp. 7260 - 7274
Main Authors Liu, Jing, Li, Pengfei, Huai, Yanyan, Gong, Yadong, Zhou, Jianzhong, Lu, Jinzhong
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2023
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Quality Control
Reliability
Safety and Risk
Technical Article
Tribology
microstructures
heat treatment
interface
laminated composites
mechanical properties
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Summary:Laminated composites of IN718-95% IN718 + 5% (Cr 2 O 3  + 25% TiO 2 ) were fabricated by directed energy deposition, which were subjected to different posttreatment methods. The interfacial microstructures and mechanical properties of the laminated composites were studied by room temperature tensile tests and impact tests and analyzed by SEM and XRD. The interfacial morphology of the laminated composites after different treatment methods was compared. The effects of different treatment temperatures on the microstructure morphology and precipitate composition were analyzed. The results show that the precipitated strengthening phases improve the microhardness of solution by double aging (SA) treatment and homogenization, solution and double aging (HSA) treatment. The impact toughness and tensile strength are closely related to the heat treatment temperature and time. The impact toughness of the laminated composites reached 53.13 J/cm 2 , and the ultimate tensile strength reached 1339.85 MPa after HSA treatment.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-022-07651-1