Characteristics of a modified H13 hot-work tool steel fabricated by means of laser beam powder bed fusion

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Yuan, Miwen,1990Chalmers University of Technology, Sweden,Central South University,Chalmers tekniska högskola (author)

Characteristics of a modified H13 hot-work tool steel fabricated by means of laser beam powder bed fusion

Article/chapterEnglish2022

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Elsevier Ltd,2022
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LIBRIS-ID:oai:DiVA.org:ri-57920
https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-57920URI
https://doi.org/10.1016/j.msea.2021.142322DOI
https://research.chalmers.se/publication/527258URI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

Funding details: VINNOVA, 2016–03305; Funding details: Chalmers Tekniska Högskola; Funding details: China Scholarship Council, CSC; Funding text 1: This study is supported by Vinnova (Sweden's Innovation Agency) No. 2016–03305 , China Scholarship Council ( CSC ) and Production Area of Advance, Chalmers University of Technology, Sweden .
In the present study, a modified H13 hot-work tool steel (M-H13) was fabricated by laser beam powder bed fusion (LB-PBF). The effect of two types of post processing, direct tempering from as-built condition (DT) and conventional quenching followed by tempering (QT), on the microstructure and mechanical properties was evaluated. The typical microstructure in QT condition was tempered martensite with carbides along lath boundaries. In DT condition, melt pool boundaries and cellular structure from as-built condition were still observed. While comparable tensile properties and hardness were obtained, DT samples exhibited significantly lower impact toughness compared to QT samples. This was attributed to the difference in work hardening ability and strain rate sensitivity originating from different microstructures obtained under these two heat treatment conditions. The study was also focused on the softening behavior and the correlation with the microstructure of the two post treatments at the elevated temperatures. It was found that the DT samples showed lower thermal softening compared to QT samples. The evolution of carbides was discussed based on the microanalysis results and the JMatPro simulation. © 2021 The Authors

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Materialteknik Bearbetnings-, yt- och fogningsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Manufacturing, Surface and Joining Technology hsv//eng
TEKNIK OCH TEKNOLOGIER Materialteknik Annan materialteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Other Materials Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Materialteknik Metallurgi och metalliska material hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Metallurgy and Metallic Materials hsv//eng
Additive manufacturing
Heat treatment
Mechanical properties
Softening resistance
Tool steel
3D printers
Carbides
Fabrication
Heat resistance
Hot working
Laser beams
Microstructure
Strain hardening
Strain rate
Tempering
Tools
Condition
Conventional quenching
Hot-work tool steel
Lath boundary
Melt pool
Microstructures and mechanical properties
Post-processing
Powder bed
Tempered martensite

Added entries (persons, corporate bodies, meetings, titles ...)

Cao, Yu,1969Chalmers University of Technology, Sweden; Central South University, China,Chalmers tekniska högskola(Swepub:cth)yucao (author)
Karamchedu, Seshendra,1987Uddeholms AB, Sweden(Swepub:cth)seskar (author)
Hosseini, SeyedRISE,Tillverkningsprocesser,Chalmers University of Technology, Sweden,Chalmers tekniska högskola,RISE Research Institutes of Sweden(Swepub:cth)mi0hobe (author)
Yao, Yiming,1957Chalmers University of Technology, Sweden,Chalmers tekniska högskola(Swepub:cth)yimin (author)
Berglund, JohanRISE,Tillverkningsprocesser,Chalmers University of Technology, Sweden,RISE Research Institutes of Sweden,Chalmers tekniska högskola(Swepub:cth)berjohan (author)
Liu, L.Central South University, China (author)
Nyborg, Lars,1958Chalmers University of Technology, Sweden,Chalmers tekniska högskola(Swepub:cth)nyborg (author)
Chalmers University of Technology, SwedenCentral South University (creator_code:org_t)

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In:Materials Science & Engineering: Elsevier Ltd8310921-50931873-4936

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