Machining of additively manufactured alloy 718 in as-built and heat-treated condition: surface integrity and cutting tool wear

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Machining of additively manufactured alloy 718 in as-built and heat-treated condition: surface integrity and cutting tool wear

Holmberg, Jonas, 1976- (författare): RISE,Tillverkningsprocesser,Department of Manufacturing Processes, RISE Research Institutes of Sweden AB, Argongatan 30, Mölndal, Sweden,RISE Res Inst Sweden AB, Dept Mfg Proc, Argongatan 30, Mölndal, Sweden.,RISE Research Institutes of Sweden

Berglund, Johan (författare): RISE,Tillverkningsprocesser,Department of Manufacturing Processes, RISE Research Institutes of Sweden AB, Argongatan 30, Mölndal, Sweden,RISE Res Inst Sweden AB, Dept Mfg Proc, Argongatan 30, Mölndal, Sweden.,RISE Research Institutes of Sweden

Brohede, Ulrika (författare): Department of Production Technology, Swerim AB, Isafjordsgatan 28A, Kista, Sweden,Swerim AB, Dept Prod Technol, Isafjordsgatan 28A, Kista, Sweden.

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Åkerfeldt, Pia (författare): Luleå tekniska universitet,Materialvetenskap,Division of Material Science, Luleå University of Technology, 971 87, Luleå, Sweden,Luleå Univ Technol, Div Mat Sci, SE-97187 Luleå, Sweden.,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)

Sandell, Viktor, 1991- (författare): Luleå tekniska universitet,Materialvetenskap,Division of Material Science, Luleå University of Technology, 971 87, Luleå, Sweden,Luleå Univ Technol, Div Mat Sci, SE-97187 Luleå, Sweden.,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)

Rashid, Amir, 1967- (författare): KTH,Tillverkning och mätsystem,Department of Production Engineering, KTH Royal Institute of Technology, Brinellvägen 68, Stockholm, Sweden,KTH Royal Inst Technol, Dept Prod Engn, Brinellvagen 68, SE-10044 Stockholm, Sweden.,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)

Zhao, Xiaoyu, 1990- (författare): KTH,Tillverkning och mätsystem,Department of Production Engineering, KTH Royal Institute of Technology, Brinellvägen 68, Stockholm, Sweden,KTH Royal Inst Technol, Dept Prod Engn, Brinellvagen 68, SE-10044 Stockholm, Sweden.,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)

Dadbakhsh, Sasan (författare): KTH,Tillverkning och mätsystem,Department of Production Engineering, KTH Royal Institute of Technology, Brinellvägen 68, Stockholm, Sweden,KTH Royal Inst Technol, Dept Prod Engn, Brinellvagen 68, SE-10044 Stockholm, Sweden.,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)

Fischer, Marie, 1991 (författare): Department of Industrial and Materials Science, Chalmers University of Technology, Hörsalsvägen 7B, Göteborg, Sweden,Chalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, Gothenburg, Sweden.,Chalmers tekniska högskola,Chalmers University of Technology

Hryha, Eduard, 1980 (författare): Department of Industrial and Materials Science, Chalmers University of Technology, Hörsalsvägen 7B, Göteborg, Sweden,Chalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, Gothenburg, Sweden.,Chalmers tekniska högskola,Chalmers University of Technology

Wiklund, Urban (författare): Uppsala universitet,Tillämpad materialvetenskap,Uppsala University

Karlsson Hassila, Carl Johan (författare): Uppsala universitet,Tillämpad materialvetenskap,Uppsala University

Hosseini, Seyed (författare): RISE,Tillverkningsprocesser,Department of Manufacturing Processes, RISE Research Institutes of Sweden AB, Argongatan 30, Mölndal, Sweden,RISE Res Inst Sweden AB, Dept Mfg Proc, Argongatan 30, Mölndal, Sweden.,RISE Research Institutes of Sweden

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Springer Nature, 2024
2024
Engelska.
Ingår i: The International Journal of Advanced Manufacturing Technology. - : Springer Nature. - 0268-3768 .- 1433-3015. ; 130:3-4, s. 1823-1842

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Additive manufacturing (AM) using powder bed fusion is becoming a mature technology that offers great possibilities and design freedom for manufacturing of near net shape components. However, for many gas turbine and aerospace applications, machining is still required, which motivates further research on the machinability and work piece integrity of additive-manufactured superalloys. In this work, turning tests have been performed on components made with both Powder Bed Fusion for Laser Beam (PBF-LB) and Electron Beam (PBF-EB) in as-built and heat-treated conditions. The two AM processes and the respective heat-treatments have generated different microstructural features that have a great impact on both the tool wear and the work piece surface integrity. The results show that the PBF-EB components have relatively lower geometrical accuracy, a rough surface topography, a coarse microstructure with hard precipitates and low residual stresses after printing. Turning of the PBF-EB material results in high cutting tool wear, which induces moderate tensile surface stresses that are balanced by deep compressive stresses and a superficial deformed surface that is greater for the heat-treated material. In comparison, the PBF-LB components have a higher geometrical accuracy, a relatively smooth topography and a fine microstructure, but with high tensile stresses after printing. Machining of PBF-LB material resulted in higher tool wear for the heat-treated material, increase of 49%, and significantly higher tensile surface stresses followed by shallower compressive stresses below the surface compared to the PBF-EB materials, but with no superficially deformed surface. It is further observed an 87% higher tool wear for PBF-EB in as-built condition and 43% in the heat-treated condition compared to the PBF-LB material. These results show that the selection of cutting tools and cutting settings are critical, which requires the development of suitable machining parameters that are designed for the microstructure of the material.

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Av författaren/redakt...: Holmberg, Jonas, ...; Berglund, Johan; Brohede, Ulrika; Åkerfeldt, Pia; Sandell, Viktor, ...; Rashid, Amir, 19 ...; visa fler...; Zhao, Xiaoyu, 19 ...; Dadbakhsh, Sasan; Fischer, Marie, ...; Hryha, Eduard, 1 ...; Wiklund, Urban; Karlsson Hassila ...; Hosseini, Seyed; visa färre...

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Machining of additively manufactured alloy 718 in as-built and heat-treated condition: surface integrity and cutting tool wear

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