Additive manufacturing of the high-strength nickel base superalloys using the metal 3D printer

• Project/Area Number: 16K06799
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Kakehi Koji 首都大学東京, システムデザイン研究科, 教授 (70185726)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: ニッケル基超合金 / 積層造形 / 選択的レーザー溶融法 / 電子ビーム溶融法 / 高温強度 / デンドライト組織 / 凝固偏析 / Ni基超合金 / 凝固割れ / 再結晶 / δ相 / ひずみ時効割れ / 柱状晶 / 材料加工・処理 / 構造・機能材料 / 機械材料・材料力学

Outline of Final Research Achievements

The effects of build direction and heat treatment on the creep properties of an Ni-base superalloy fabricated by additive manufacturing were examined at 650 °C. The creep rupture lives and ductilities of materials produced by additive manufacturing were lower than those of conventionally wrought material. The horizontal-direction specimen exhibited inferior creep life and worse ductility than the vertical-direction specimen because of the orientation of the interdendritic δ-phase precipitates, which were arrayed vertical to the stress axis in the former specimen. The morphology and the presence of a row of interdendritic δ-phase precipitates with incoherent interfaces were found to affect the materials’ creep life and ductility.

Academic Significance and Societal Importance of the Research Achievements

選択的レーザー溶融法で作製した積層造形Ni基超合金において，プロセス過程の急熱急冷の繰り返しに起因するデンドライト凝固偏析により高温強度特性劣化が生じ，そのメカニズムを明らかにし，その課題解決の方向性を示した．

Research Products

• [Journal Article] Study of Formed Oxides in IN718 Alloy during the Fabrication by Selective Laser Melting and Electron Beam Melting (2018)
  • Author(s): Yu Hao、Hayashi Shigenari、Kakehi Koji、Kuo Yen-Ling
  • Journal Title: Metals Volume: 9 Issue: 1 Pages: 19-19
  • DOI: 10.3390/met9010019
  • Peer Reviewed / Open Access
• [Journal Article] Characterization of Ni-Based Superalloy Built by Selective Laser Melting and Electron Beam Melting (2018)
  • Author(s): Kuo Yen-Ling、Kamigaichi Azusa、Kakehi Koji
  • Journal Title: Metallurgical and Materials Transactions A Volume: 49 Issue: 9 Pages: 3831-3837
  • DOI: 10.1007/s11661-018-4769-y
  • Peer Reviewed
• [Journal Article] The Effect of Post-Processes on the Microstructure and Creep Properties of Alloy718 Built Up by Selective Laser Melting (2018)
  • Author(s): Kuo Yen-Ling、Nagahari Toshiki、Kakehi Koji
  • Journal Title: Materials Volume: 11 Issue: 6 Pages: 996-996
  • DOI: 10.3390/ma11060996
  • Peer Reviewed / Open Access
• [Journal Article] Strengths and Microstructure of SUS316L Fabricated by Selective Laser Melting (2018)
  • Author(s): Akino Kazuki、Kakehi Koji
  • Journal Title: MATERIALS TRANSACTIONS Volume: 59 Issue: 3 Pages: 482-487
  • DOI: 10.2320/matertrans.M2017163
  • NAID: 130006400681
  • ISSN: 1345-9678, 1347-5320
  • Peer Reviewed
• [Journal Article] 金属粉末積層造形法により作製した耐熱合金における高温強度特性劣化 (2018)
  • Author(s): 筧 幸次，郭妍伶，秋野一輝
  • Journal Title: 日本ガスタービン学会誌 Volume: 46 Pages: 197-203
• [Journal Article] 不純物元素に対しロバストな積層造形ニッケル基超合金の創成 (2018)
  • Author(s): 筧 幸次，林 重成，郭 妍伶，佐藤 直子，尾ノ井 正裕
  • Journal Title: 日本学術振興会耐熱金属材料第123委員会研究報告 Volume: 59 Pages: 359-372
• [Journal Article] SLM積層造形法を用いて作製した固溶強化型Ni基超合金IN625のクリープ特性と組織 (2018)
  • Author(s): 磯部諒也，筧幸次
  • Journal Title: 日本学術振興会耐熱金属材料第123委員会研究報告 Volume: 59 Pages: 455-470
• [Journal Article] Effects of build direction and heat treatment on creep properties of Ni-base superalloy built up by additive manufacturing (2017)
  • Author(s): Kuo Yen-Ling、Horikawa Shota、Kakehi Koji
  • Journal Title: Scripta Materialia Volume: 129 Pages: 74-78
  • DOI: 10.1016/j.scriptamat.2016.10.035
  • Peer Reviewed
• [Journal Article] The effect of interdendritic δ phase on the mechanical properties of Alloy 718 built up by additive manufacturing (2017)
  • Author(s): Kuo Yen-Ling、Horikawa Shota、Kakehi Koji
  • Journal Title: Materials & Design Volume: 116 Pages: 411-418
  • DOI: 10.1016/j.matdes.2016.12.026
  • Peer Reviewed
• [Journal Article] Microstructure and Mechanical Properties of Ti–6Al–4V parts build by Selective Laser Melting (2017)
  • Author(s): 櫻井 勇也、筧 幸次
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 81 Issue: 3 Pages: 120-126
  • DOI: 10.2320/jinstmet.J2016042
  • NAID: 130005397039
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed
• [Journal Article] Influence of Powder Surface Contamination in the Ni-Based Superalloy Alloy718 Fabricated by Selective Laser Melting and Hot Isostatic Pressing (2017)
  • Author(s): Kuo Yen-Ling、Kakehi Koji
  • Journal Title: Metals Volume: 7 Issue: 9 Pages: 367-367
  • DOI: 10.3390/met7090367
  • Peer Reviewed / Open Access
• [Journal Article] Effect of the Prior Particle Boundary on the Microstructure and Mechanical Properties of Hot-Isostatic-Pressed IN718 Alloy (2017)
  • Author(s): Y.L. Kuo, K. Kakeh
  • Journal Title: MATERIALS TRANSACTIONS Volume: 58 Issue: 7 Pages: 1042-1048
  • DOI: 10.2320/matertrans.M2017045
  • NAID: 130006777010
  • ISSN: 1345-9678, 1347-5320
  • Peer Reviewed / Open Access
• [Journal Article] The High Temperature Tensile and Creep Behaviors of High Entropy Superalloy (2017)
  • Author(s): Tsao Te-Kang、Yeh An-Chou、Kuo Chen-Ming、Kakehi Koji、Murakami Hideyuki、Yeh Jien-Wei、Jian Sheng-Rui
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 1-9
  • DOI: 10.1038/s41598-017-13026-7
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Strengths and Microstructure of SUS316L Fabricated by Selective Laser Melting (2016)
  • Author(s): 秋野 一輝, 筧 幸次
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 80 Issue: 12 Pages: 772-777
  • DOI: 10.2320/jinstmet.JAW201610
  • NAID: 130005284307
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed / Open Access
• [Journal Article] Effect of secondary orientation on the creep strength of single crystal of a nickel-based superalloy (2016)
  • Author(s): 筧幸次
  • Journal Title: Transactions of the JSME (in Japanese) Volume: 82 Issue: 838 Pages: 15-00673-15-00673
  • DOI: 10.1299/transjsme.15-00673
  • NAID: 130005159205
  • ISSN: 2187-9761
  • Peer Reviewed
• [Journal Article] Microstructure and Strength of HIP Sintered Ni Base Superalloy Using PREP Powder (2016)
  • Author(s): 筧幸次，横森玲，西牧智大
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 80 Issue: 8 Pages: 508-514
  • DOI: 10.2320/jinstmet.J2016014
  • NAID: 130005165560
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed / Open Access
• [Journal Article] High Temperature Properties of Advanced Directionally-Solidified High Entropy Superalloys (2016)
  • Author(s): Te-Kang Tsao, An-Chou Yeh, Jien-Wei Yeh, Mau-Sheng Chiou, Chen-Ming Kuo, Hideyuki Murakami, Koji Kakehi
  • Journal Title: Superalloys 2016: Proceedings of the 13th Intenational Symposium of Superalloys Volume: 13 Pages: 1001-1009
  • DOI: 10.1002/9781119075646.ch106
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 金属３Dプリンタのスーパーアロイへの適用の可能性をさぐる (2016)
  • Author(s): 筧幸次
  • Journal Title: 機械技術 Volume: 64 Pages: 76-82
• [Presentation] Effect of Post Treatment on Creep Properties of Ni Based Superalloy ・Inconel 718 Built up by selective laser melting (2019)
  • Author(s): T. Nagahari, Y.L. Kuo, K. Kakehi,
  • Organizer: 3rd International Symposium Additive Manufacturing, ISAM2019
  • Int'l Joint Research
• [Presentation] Influence of Powder Surface Contamination in the Ni-Based Superalloy Alloy718 Fabricated by Selective Laser Melting and Hot Isostatic Pressing (2018)
  • Author(s): Koji Kakeh, Yen-Ling, Kuo
  • Organizer: Eurosuperalloys 2018:
  • Int'l Joint Research
• [Presentation] Characterization of Ni-based superlloy built by Selective Laser Melting and Electron Beam Melting, (2018)
  • Author(s): Y. L. Kuo
  • Organizer: EUROSUPERALLOYS 2018
  • Int'l Joint Research
• [Presentation] The effect of microstructure on the oxidation behavior of Alloy718 built up by selective laser melting and electron beam melting (2018)
  • Author(s): Y.L. Kuo
  • Organizer: 2019 JIM Spring Annual (164th) Meeting,
• [Presentation] SLM法とHIP法により作製したNi基超合金CM247LCの組織と機械的特性 (2018)
  • Author(s): 平井篤志，郭妍伶、筧幸次
  • Organizer: 第46回日本ガスタービン学会定期講演会
• [Presentation] SLM法におけるプロセスパラメータがNi基超合金IN718の欠陥および機械的特性に及ぼす影響 (2018)
  • Author(s): 近藤研志，筧幸次，An-Chou Yeh
  • Organizer: 第46回日本ガスタービン学会定期講演会
• [Presentation] SLM積層造形法を用いて作製した固溶強化型Ni基超合金IN625のクリープ特性と組織 (2018)
  • Author(s): 磯部諒也，筧幸次
  • Organizer: 日本学術振興会耐熱金属材料第123委員会
• [Presentation] 不純物元素に対しロバストな積層造形ニッケル基超合金の創成 (2018)
  • Author(s): 筧 幸次
  • Organizer: 日本学術振興会耐熱金属材料第123委員会
  • Invited
• [Presentation] Microstructure and mechanical properties of Ni-base superalloys fabricated by selective laser melting (2018)
  • Author(s): K.Kakehi
  • Organizer: CAMS 2018, Advancing Materials and Manufacturing
  • Int'l Joint Research / Invited
• [Presentation] 耐熱合金の３D積層造形の現状と課題 (2018)
  • Author(s): 筧 幸次
  • Organizer: 日本ガスタービン学会主催ガスタービンセミナー
  • Invited
• [Presentation] 酸素・窒素に対しロバストな積層造形ニッケル基超耐熱合金開発 (2018)
  • Author(s): 筧 幸次
  • Organizer: 粉体粉末冶金協会粉末積層３D技術員会
  • Invited
• [Presentation] Influence of Powder Surface Oxides on the Microstructure of Ni-based Alloys Fabricated by SPS and Additive Manufacturing (2018)
  • Author(s): Hao Yu, Shigenari Hayashi, Koji Kakehi
  • Organizer: 耐熱金属材料第123委員会
• [Presentation] SLM法により積層造形した高強度ステンレス鋼の強度と組織 (2017)
  • Author(s): 秋野一輝，筧幸次
  • Organizer: 日本金属学会第160回春季講演大会
  • Place of Presentation: 首都大学東京南大沢キャンパス
  • Year and Date: 2017-03-15
• [Presentation] 電子ビーム積層造形Inconel 718のクリープ特性 (2017)
  • Author(s): 上垣内梓，堀川将大，筧幸次
  • Organizer: 日本金属学会第160回春季講演大会
  • Place of Presentation: 首都大学東京南大沢キャンパス
  • Year and Date: 2017-03-15
• [Presentation] レーザー走査方法が積層造形Ni基超合金の組織と機械特性に及ぼ影響 (2017)
  • Author(s): 堀川将大,筧幸次
  • Organizer: 日本金属学会第160回春季講演大会
  • Place of Presentation: 首都大学東京南大沢キャンパス
  • Year and Date: 2017-03-15
• [Presentation] Microstructure and high-temperature strengths of IN718 built up by DMLS additive manufacturing (2017)
  • Author(s): Y.L Kuo, K. Kakehi
  • Organizer: The 4th International Conference on Powder Metallurgy in Asia
  • Int'l Joint Research
• [Presentation] Microstructure and mechanical properties of Alloy718 built up by additive manufacturing processes: a comparison between EBM and SLM (2017)
  • Author(s): Y.L. Kuo, A. Kamigaichi, K. Kakehi
  • Organizer: IUMRS-ICAM 2017
  • Int'l Joint Research
• [Presentation] EBM・SLM積層法により造形したSUS316Lステンレス鋼の強度特性および組織 (2017)
  • Author(s): 秋野一輝，筧幸次
  • Organizer: 日本金属学会第161回春季講演大会
• [Presentation] 選択的レーザー溶融法により積層造形されたγ'析出型Ni基超合金IN939の高温強度と微視組織 (2017)
  • Author(s): 平塚耀，筧幸次
  • Organizer: 日本金属学会第161回春季講演大会
• [Presentation] 選択的レーザ溶融法および電子ビーム溶融法で積層造形したIN718の クリープ特性 (2017)
  • Author(s): 上垣内梓，郭妍伶，筧幸次
  • Organizer: 日本ガスタービン学会定期講演会
• [Presentation] 選択的レーザー溶融法を用いて積層造形した固溶強化型Ni基超合金IN625の高温強度と組織 (2017)
  • Author(s): 磯部諒也，筧幸次
  • Organizer: 日本ガスタービン学会定期講演会
• [Presentation] 選択的レーザー溶融法により積層造形されたγ'析出型Ni基超合金IN939の高温強度と微視組織 (2017)
  • Author(s): 筧幸次，平塚 耀
  • Organizer: 日本ガスタービン学会定期講演会
• [Presentation] EBM・SLM積層法により造形したSUS316Lステンレス鋼の強度特性および組織 (2017)
  • Author(s): 秋野一輝，筧幸次
  • Organizer: 日本ガスタービン学会定期講演会
• [Presentation] 電子ビーム溶融法および選択的レーザ溶融法積層造形したニッケル基超合金;の組織と特性 (2017)
  • Author(s): 筧幸次
  • Organizer: Arcam/GE－HTL セミナー
  • Invited
• [Presentation] Ni基超合金の積層造形 (2017)
  • Author(s): 筧幸次
  • Organizer: 第68回塑性加工連合講演会,
  • Invited
• [Presentation] The unexpected precipitation and recrystallization in Ni-base superalloys fabricated by selective laser melting, (2017)
  • Author(s): K. Kakehi, Y.L. Kuo
  • Organizer: IUMRS International Conference in Asia
  • Int'l Joint Research / Invited
• [Presentation] Microstructure and mechanical properties of Alloy718 built up by additive manufacturing processes: a comparison between EBM and SLM (2017)
  • Author(s): Yen-Ling Kuo, A. Kamigaichi, S. Horikawa, K. Kakehi
  • Organizer: IUMRS International Conference in Asia
  • Int'l Joint Research
• [Presentation] Effect of Oxides Formed on Raw Powders on the Microstructure of Consolidated Ni-based Alloys (2017)
  • Author(s): Hao Yu, Shigenari Hayashi, Koji Kakehi
  • Organizer: 日本金属学会2018年春期(第162回)講演大会
• [Presentation] レーザービーム積層造形法により作製したIN718の組織と強度特性 (2016)
  • Author(s): 堀川将大，郭妍伶，筧幸次
  • Organizer: 第44回日本ガスタービン学会定期公演会
  • Place of Presentation: ホテルリッチ＆ガーデン酒田
  • Year and Date: 2016-10-26
• [Presentation] Ti-6Al-4V積層造形材のクリープ特性と微視組織 (2016)
  • Author(s): 櫻井勇也, 筧 幸次
  • Organizer: 第44回ガスタービン学会定期公演会
  • Place of Presentation: ホテルリッチ＆ガーデン酒田
  • Year and Date: 2016-10-26
• [Presentation] 単結晶Ni基超合金のクリープ挙動に及ぼすReの影響 (2016)
  • Author(s): 大橋健史,野村直輝,筧幸次
  • Organizer: 第44回ガスタービン学会定期公演会
  • Place of Presentation: ホテルリッチ＆ガーデン酒田
  • Year and Date: 2016-10-26
• [Presentation] SUS316Lステンレス積層造形材の強度と組織 (2016)
  • Author(s): 秋野一輝，筧幸次
  • Organizer: 第44回ガスタービン学会定期公演会
  • Place of Presentation: ホテルリッチ＆ガーデン酒田
  • Year and Date: 2016-10-26
• [Presentation] Microstructure and mechanical properties of IN 718 built up by direct metal laser sintering (2016)
  • Author(s): Y.L Kuo, K. Kakehi
  • Organizer: The 3rd International Congress on 3D Materials Science
  • Place of Presentation: Illinois, USA
  • Year and Date: 2016-06-10
  • Int'l Joint Research