The role of microstructural characteristics of additively manufactured Alloy 718 on tool wear in machining

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Sökning: WFRF:(M’Saoubi Rachid) > The role of microst...

The role of microstructural characteristics of additively manufactured Alloy 718 on tool wear in machining

Malakizadi, Amir, 1983 (författare): Chalmers University of Technology

Hajali, Tina, 1996 (författare): Chalmers University of Technology

Schulz, Fiona, 1990 (författare): Chalmers University of Technology

visa fler...

Cedergren, Stefan, 1982 (författare): GKN Aerospace Services Limited,GKN Aerospace Engine Systems

Ålgårdh, Joakim (författare): GE Additive

M'Saoubi, Rachid (författare): Lund University,Lunds universitet,Industriell Produktion,Institutionen för maskinvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Production and Materials Engineering,Department of Mechanical Engineering Sciences,Departments at LTH,Faculty of Engineering, LTH,Seco Tools AB

Hryha, Eduard, 1980 (författare): Chalmers University of Technology

Krajnik, Peter, 1977 (författare): Chalmers University of Technology

visa färre...

(creator_code:org_t)

Elsevier BV, 2021
2021
Engelska.
Ingår i: International Journal of Machine Tools and Manufacture. - : Elsevier BV. - 0890-6955. ; 171

Relaterad länk:: https://research.cha... (primary) (free); visa fler...; https://doi.org/10.1...; http://dx.doi.org/10... (free); https://research.cha...; https://doi.org/10.1...; https://lup.lub.lu.s...; visa färre...

Tidskriftsartikel (refereegranskat)

Abstract Ämnesord

Stäng

This study aims to provide a fundamental understanding of the role of microstructural characteristics influencing tool wear when machining Alloy 718 fabricated using Powder Bed Fusion (PBF). The effects of preferred crystallographic orientation (texture), shape and distribution of grains, local misorientation, type and amount of precipitates as well as the type, size and amount of abrasive carbides, nitrides and oxides on tool wear are investigated in as-built condition and after the standard solutionising and double-aging treatment. The microstructures of workpiece materials and the surfaces of worn tools were examined using different material characterisation techniques, including Scanning Electron Microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and electron backscatter diffraction (EBSD). A dislocation-based approach was used to reveal the cumulative effects of the microstructural characteristics on deformation behaviour and the thermo-mechanical loads on the tools during cutting. The analyses suggest that texture and the extent of material work-hardening prior to the onset of crack formation markedly influence the amount of plastic work and thus heat generation when machining Electron Beam Powder Bed Fusion (EB-PBF) material. The higher heat generation in the cutting zones provokes thermally-induced wear mechanisms like diffusion-dissolution and oxidation. In addition, the larger amount of hard oxide inclusions present in EB-PBF material leads to higher wear by abrasion. In contrast to the prevailing experimental approaches in this field, the present investigation is built on a physics-based framework to understand the fundamental aspects that govern material deformation and heat generation in cutting and, consequently, tool wear mechanisms. This framework can be used for machinability assessment of any alloy manufactured by different additive manufacturing (AM) technologies and for optimising the process-chain, including printing strategies and thermal post-treatments, to improve the machinability of AM alloys by tailoring their microstructure.

Ämnesord

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)

Nyckelord

Tool wear
Alloy 718
Machining
Additive manufacturing
Powder bed fusion
Additive manufacturing
Alloy 718
Machining
Powder bed fusion
Tool wear

Publikations- och innehållstyp

art (ämneskategori)
ref (ämneskategori)

Hitta via bibliotek

International Journal of Machine Tools and Manufacture (Sök värdpublikationen i LIBRIS)

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...: Malakizadi, Amir ...; Hajali, Tina, 19 ...; Schulz, Fiona, 1 ...; Cedergren, Stefa ...; Ålgårdh, Joakim; M'Saoubi, Rachid; visa fler...; Hryha, Eduard, 1 ...; Krajnik, Peter, ...; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Bearbetnings yt ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Annan materialte ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Metallurgi och m ...

Artiklar i publikationen: International Jo ...

Av lärosätet: Chalmers tekniska högskola; Lunds universitet

Sök utanför SwePub

Sök vidare i:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se