DU Junping

最終更新日時: 2017/07/14 17:30:57

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氏名(漢字/フリガナ/アルファベット表記)
DU Junping/ドウ ジユンピン/Du, Junping
所属部署・職名(部局/所属/講座等/職名)
学際融合教育研究推進センター/構造材料元素戦略研究拠点ユニット/特定准教授
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学位名(日本語) 学位名(英語) 大学(日本語) 大学(英語) 取得区分
Ph.D. Central Iron and Steel Research Institute
researchmap URL
https://researchmap.jp/7000018467
研究テーマ
(英語)
Interatomic interaction potentials, Accelerated molecular dynamics, First-principles calculations, Nanoscale-scale modeling in metals, interface phenomena in metals and alloys
研究概要
(英語)
Molecular dynamics (MD) simulation has been widely used in the study of the properties of materials. However, there are two bottlenecks in the application of MD method: the lack of multi-elements potential and the time-scale limitation. My research has centered on the two topics. (1) Ni-based superalloys are composed of nearly ten elements. Because the EAM potentials in the literature are mostly constructed for pure metals and binary alloys, the construction of multi-element EAM potentials is important for simulations concerning the movement of dislocations, crack propagation and alloying effects in the Ni-based single crystal superalloys. Therefore, I have constructed the ternary EAM potentials for the application in Ni-based superalloys. (2) The strain rate in conventional MD simulations (~10^8 s^−1) differs considerably from typical experimental strain rates (~10^−4 s^−1) because of the short timescale of MD simulations. The dislocation nucleation is a thermally activated rate-controlling process at finite temperature and is usually rate-sensitive, so the temperature and strain-rate sensitivities should be carefully studied at realistic timescales. Thus, I accelerated the dislocation nucleation events using an accelerated MD method (the adaptive-boost MD) and study the dislocation nucleation with atomic-level resolution at finite temperature, which offers opportunities for more comprehensive investigation of these processes arising from interfacial defects.
研究分野(キーワード)
キーワード(日本語) キーワード(英語)
Atomistic simulations
論文
著者 著者(日本語) 著者(英語) タイトル タイトル(日本語) タイトル(英語) 書誌情報等 書誌情報等(日本語) 書誌情報等(英語) 出版年月 査読の有無 記述言語 掲載種別 公開
W.T. Geng, Liang Wan, Jun-Ping Du, Akio Ishii, Nobuyuki Ishikawa, Hajime Kimizuka, and Shigenobu Ogata W.T. Geng, Liang Wan, Jun-Ping Du, Akio Ishii, Nobuyuki Ishikawa, Hajime Kimizuka, and Shigenobu Ogata W.T. Geng, Liang Wan, Jun-Ping Du, Akio Ishii, Nobuyuki Ishikawa, Hajime Kimizuka, and Shigenobu Ogata Hydrogen bubble nucleation in α-iron Hydrogen bubble nucleation in α-iron Hydrogen bubble nucleation in α-iron Scripta Materialia, 134, 105 Scripta Materialia, 134, 105 Scripta Materialia, 134, 105 2017 英語 研究論文(学術雑誌) 公開
Liang Wan, Akio Ishii, Jun-Ping Du, Wei-Zhong Han, Qingsong Mei, and Shigenobu Ogata Liang Wan, Akio Ishii, Jun-Ping Du, Wei-Zhong Han, Qingsong Mei, and Shigenobu Ogata Liang Wan, Akio Ishii, Jun-Ping Du, Wei-Zhong Han, Qingsong Mei, and Shigenobu Ogata Atomistic modeling study of a strain-free stress driven grain boundary migration mechanism Atomistic modeling study of a strain-free stress driven grain boundary migration mechanism Atomistic modeling study of a strain-free stress driven grain boundary migration mechanism Scripta Materialia, 134, 52 Scripta Materialia, 134, 52 Scripta Materialia, 134, 52 2017 英語 研究論文(学術雑誌) 公開
Jun-Ping Du, Yun-Jiang Wang, Yu-Chieh Lo, Liang Wan, and Shigenobu Ogata Jun-Ping Du, Yun-Jiang Wang, Yu-Chieh Lo, Liang Wan, and Shigenobu Ogata Jun-Ping Du, Yun-Jiang Wang, Yu-Chieh Lo, Liang Wan, and Shigenobu Ogata Mechanism transition and strong temperature dependence of dislocation nucleation from grain boundaries: An accelerated molecular dynamics study Mechanism transition and strong temperature dependence of dislocation nucleation from grain boundaries: An accelerated molecular dynamics study Mechanism transition and strong temperature dependence of dislocation nucleation from grain boundaries: An accelerated molecular dynamics study Physical Review B, 94, 104110 Physical Review B, 94, 104110 Physical Review B, 94, 104110 2016 英語 研究論文(学術雑誌) 公開
Ming-Shuai Ding, Jun-Ping Du, Liang Wan, Shigenobu Ogata, Lin Tian, Evan Ma, Wei-Zhong Han, Ju Li and Zhi-Wei Shan Ming-Shuai Ding, Jun-Ping Du, Liang Wan, Shigenobu Ogata, Lin Tian, Evan Ma, Wei-Zhong Han, Ju Li and Zhi-Wei Shan Ming-Shuai Ding, Jun-Ping Du, Liang Wan, Shigenobu Ogata, Lin Tian, Evan Ma, Wei-Zhong Han, Ju Li and Zhi-Wei Shan Radiation-induced helium nanobubbles enhance ductility in submicron-sized single-crystalline copper Radiation-induced helium nanobubbles enhance ductility in submicron-sized single-crystalline copper Radiation-induced helium nanobubbles enhance ductility in submicron-sized single-crystalline copper Nano Letters, 16, 4118 Nano Letters, 16, 4118 Nano Letters, 16, 4118 2016 英語 研究論文(学術雑誌) 公開
Qin-Na Fan, Chong-Yu Wang, Tao Yu and Jun-Ping Du Qin-Na Fan, Chong-Yu Wang, Tao Yu and Jun-Ping Du Qin-Na Fan, Chong-Yu Wang, Tao Yu and Jun-Ping Du A ternary Ni-Al-W EAM potential for Ni-based single crystal superalloys A ternary Ni-Al-W EAM potential for Ni-based single crystal superalloys A ternary Ni-Al-W EAM potential for Ni-based single crystal superalloys Physica B: Condensed Matter, 456, 283 Physica B: Condensed Matter, 456, 283 Physica B: Condensed Matter, 456, 283 2015 英語 研究論文(学術雑誌) 公開
Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Cross-slip process in model Ni(Al) solid solution: An embedded-atom method study Cross-slip process in model Ni(Al) solid solution: An embedded-atom method study Cross-slip process in model Ni(Al) solid solution: An embedded-atom method study Computational Materials Science, 91, 192 Computational Materials Science, 91, 192 Computational Materials Science, 91, 192 2014 英語 研究論文(学術雑誌) 公開
Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu The ternary Ni-Al-Co embedded-atom-method potential for γ/γ' Ni-based single-crystal superalloys: Construction and application The ternary Ni-Al-Co embedded-atom-method potential for γ/γ' Ni-based single-crystal superalloys: Construction and application The ternary Ni-Al-Co embedded-atom-method potential for γ/γ' Ni-based single-crystal superalloys: Construction and application Chinese Physics B, 23, 033401 Chinese Physics B, 23, 033401 Chinese Physics B, 23, 033401 2014 英語 研究論文(学術雑誌) 公開
Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Construction and application of multi-element EAM potential in Ni-based single crystal model superalloys Construction and application of multi-element EAM potential in Ni-based single crystal model superalloys Construction and application of multi-element EAM potential in Ni-based single crystal model superalloys Central Iron and Steel Research Institute, China Central Iron and Steel Research Institute, China Central Iron and Steel Research Institute, China 2014 中国語 学位論文(博士) 公開
Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Jun-Ping Du, Chong-Yu Wang and Tao Yu Construction and application of multi-element EAM potential (Ni-Al-Re) in γ/γ´ Ni-based single crystal superalloys Construction and application of multi-element EAM potential (Ni-Al-Re) in γ/γ´ Ni-based single crystal superalloys Construction and application of multi-element EAM potential (Ni-Al-Re) in γ/γ´ Ni-based single crystal superalloys Modelling Simulation in Materials Science and Engineering, 21, 015007 Modelling Simulation in Materials Science and Engineering, 21, 015007 Modelling Simulation in Materials Science and Engineering, 21, 015007 2013 英語 研究論文(学術雑誌) 公開
Hong-Xian Xie,Chong-Yu Wang, Tao Yu and Jun-Ping Du Hong-Xian Xie,Chong-Yu Wang, Tao Yu and Jun-Ping Du Hong-Xian Xie,Chong-Yu Wang, Tao Yu and Jun-Ping Du Dislocation formation and twinning from the crack tip in Ni3Al: molecular dynamics simulations Dislocation formation and twinning from the crack tip in Ni3Al: molecular dynamics simulations Dislocation formation and twinning from the crack tip in Ni3Al: molecular dynamics simulations Chinese Physics B, 18, 251 Chinese Physics B, 18, 251 Chinese Physics B, 18, 251 2009 英語 研究論文(学術雑誌) 公開
Tao Yu, Li-Qun Chen, Chong-Yu Wang, Zheng-Chen Qiu and Jun-Ping Du Tao Yu, Li-Qun Chen, Chong-Yu Wang, Zheng-Chen Qiu and Jun-Ping Du Tao Yu, Li-Qun Chen, Chong-Yu Wang, Zheng-Chen Qiu and Jun-Ping Du First-principles investigation of the impurity-kink interaction in bcc iron First-principles investigation of the impurity-kink interaction in bcc iron First-principles investigation of the impurity-kink interaction in bcc iron Chinese Science Bulletin, 53, 1796 Chinese Science Bulletin, 53, 1796 Chinese Science Bulletin, 53, 1796 2008 英語 研究論文(学術雑誌) 公開
Tao Yu, Hong-Xian Xie, Jun-Ping Du, Li-Xia Cao and Chong-Yu Wang Tao Yu, Hong-Xian Xie, Jun-Ping Du, Li-Xia Cao and Chong-Yu Wang Tao Yu, Hong-Xian Xie, Jun-Ping Du, Li-Xia Cao and Chong-Yu Wang Progress of investigation on crack dynamics Progress of investigation on crack dynamics Progress of investigation on crack dynamics Metallic Functional Materials, 15, 39 Metallic Functional Materials, 15, 39 Metallic Functional Materials, 15, 39 2008 中国語 研究論文(学術雑誌) 公開

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