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Surface integrity o...
Surface integrity of machined electron beam melted Ti6Al4V alloy manufactured with different contour settings and heat treatment
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- Mallipeddi, Dinesh, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Hajali, Tina (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Rännar, Lars-Erik, 1973- (author)
- Mittuniversitetet,Institutionen för kvalitets- och maskinteknik
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- Bergström, Axel (author)
- AIM Sweden AB
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- Hernández, Sinuhé (author)
- Sandvik Group AB,Department of Verification of Components and Materials, AB Sandvik Coromant, SE-81181 Sandviken, Sweden
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- Strandh, Emil (author)
- Swerim AB,Powder Materials & Additive Manufacturing, Swerim AB, Isafjordsgatan 28 A, SE-16440 Kista, Sweden
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- Nyborg, Lars, 1958 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Krajnik, Peter, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- English.
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In: Procedia CIRP. - : Elsevier BV. - 2212-8271. ; 87:20, s. 327-332
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Abstract
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- The powder-bed-fusion-based Electron Beam Melting (EBM) is rapidly gaining interest as a feasible process in the manufacturing industry for producing intricate Ti6Al4V components. However, there is still a challenge of reducing production time and optimizing surface roughness. One way to improve surface roughness is to optimize the melting strategy, i.e. contour setting. This not only influences the obtained surface topographical features, but also the production time. Most industrial applications require subtractive post processing (machining) to obtain a desired functional surface. This paper is concerned with analysing surface and subsurface in turning of Ti6Al4V alloy, manufactured by EBM using different contour settings. Also, the effect of subsequent heat treatment, i.e. Hot Isostatic Pressing (HIP) is studied. The results indicate that avoiding of contours require a machining allowance of 1 mm to obtain surface roughness of about 0.5 µm (Sa). In case of three and five contours the machining allowance can be reduced to 0.25 mm. Microstructural differences originating from the subsequent HIP operation show no effect on machinability. Tensile residual stresses are generated when reaching down to the heat effected zone of contour settings.
Subject headings
- 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 (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Machining
- Surface Integrity
- Titanium alloy
- Contour setting
- Additive Manufacturing
- Electron Beam Melting
Publication and Content Type
- kon (subject category)
- ref (subject category)
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- By the author/editor
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Mallipeddi, Dine ...
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Hajali, Tina
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Rännar, Lars-Eri ...
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Bergström, Axel
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Hernández, Sinuh ...
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Strandh, Emil
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show more...
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Nyborg, Lars, 19 ...
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Krajnik, Peter, ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Manufacturing Su ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
- Articles in the publication
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Procedia CIRP
- By the university
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Chalmers University of Technology
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Mid Sweden University