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High strength (~2000 MPa) or highly ductile (~11%) additively manufactured H13 by tempering at different conditions
Yan, Jujie1,2; Song, Hui3; Dong, Yangping1; Quach, Wai-Meng2; Yan, Ming1
2020-01-31
Source PublicationMaterials Science and Engineering: A
ISSN0921-5093
Volume773Pages:138845
Abstract

H13 is a typical high-performance tool steel, and has a wide application in the mold making industry. To optimize mechanical properties of additively manufactured H13, a detailed investigation on tempering was conducted at 600 C and 700 C. Tensile testing, transmission electron microscopy (TEM) and atom probe tomography (APT) were utilized in the present study. It was found that the selective laser melted H13 showed unsatisfactory tensile properties in the as-printed condition, especially in terms of the elongation at fracture (~2.42%). After tempering at 600 C, the tensile properties, including the ultra-high yield strength (1483 ± 48 MPa), ultimate strength (1938 ± 62 MPa) and ductility (~5.8%), were significantly improved, which was attributed to the strengthening effect mainly from the presence of a large number of fine VC precipitates and the high density of dislocations. After tempering at 700 C, the material showed a high ductility (~10.95%) and moderate tensile strength (1076 ± 21 MPa). The fracture mode was a mixed ductile-brittle fracture for the specimen after tempering at 600 C, and became a ductile fracture for the specimen after tempering at 700 C. It is clarified that a transition in the microstructure explains the difference in the mechanical behavior between the specimens tempered at 600 C and 700 C. The present study provides a basis for manipulating the SLM-fabricated H13 for applications requiring either high strength or high ductility.

KeywordH13 Steel Selective Laser Melting Tempering Mechanical Properties Microstructure
DOI10.1016/j.msea.2019.138845
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000513985200025
PublisherELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Scopus ID2-s2.0-85077013300
Fulltext Access
FWCI3.73677
Citation statistics
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorQuach, Wai-Meng; Yan, Ming
Affiliation1.Department of Materials Science and Engineering and Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Civil and Environmental Engineering,University of Macau,Macau,China
3.Electron Microscopy Centre of Chongqing University,Chongqing University,Chongqing,400044,China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Yan, Jujie,Song, Hui,Dong, Yangping,et al. High strength (~2000 MPa) or highly ductile (~11%) additively manufactured H13 by tempering at different conditions[J]. Materials Science and Engineering: A,2020,773:138845.
APA Yan, Jujie,Song, Hui,Dong, Yangping,Quach, Wai-Meng,&Yan, Ming.(2020).High strength (~2000 MPa) or highly ductile (~11%) additively manufactured H13 by tempering at different conditions.Materials Science and Engineering: A,773,138845.
MLA Yan, Jujie,et al."High strength (~2000 MPa) or highly ductile (~11%) additively manufactured H13 by tempering at different conditions".Materials Science and Engineering: A 773(2020):138845.
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