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Researcher Information

last modified:2017/06/23

Professor MONZEN Ryoichi

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Faculty, Affiliation

Faculty of Mechanical Engineering, Institute of Science and Engineering

College and School Educational Field

Division of Mechanical Science and Engineering, Graduate School of Natural Science and Technology
Division of Innovative Technology and Science, Graduate School of Natural Science and Technology
School of Mechanical Engineering, College of Science and Engineering

Laboratory

Materials Engineering TEL:076-234-4678 FAX:076-264-6495

Academic Background

【Academic background(Doctoral/Master's Degree)】
Tokyo Institute of Technology Master Materials Science and Engineering 197903 Completed
Tokyo Institute of Technology Doctor Materials Science and Engineering 198212 Completed
【Academic background(Bachelor's Degree)】
Tokyo Institute of Technology 197703
【Degree】
Doctor of Engineering

Career

Kanazawa University(1983/01/01-1984/03/31)
Kanazawa University(1984/04/01-1987/11/30)
Kanazawa University(1984/04/01-1987/11/30)
Kanazawa University(1998/11/01-)
Kanazawa University(1987/12/01-1998/10/31)

Year & Month of Birth

1955/01

Academic Society

The Japan Institute of Metals
The Japan Institute of Metals
The Society of Materials Science, Japan



The Japan Institute of Light Metals
The Japan Society of Microscopy
The Minerals, Metals and Materials Society
The Japan Institute of Metals

Award

The Japan Institute of Metals
The Japan Institute of Metals
The Japan Institute of Metals
The Japan Institute of Metals
The Japan Institute of Metals

Specialities

Physical properties of metals/Metal-base materials、Materials/Mechanics of materials

Speciality Keywords

microstructural control, high conductivity Cu-base alloys, precipitation

Research Themes

Development of Cu-base Alloys with Superior Mechanical Properties by Nanostructure Controll

Books

Papers

  •  Growth kinetics of ellipsoidal ω-precipitates in a Ti-20wt%Mo alloy under compressive stress T. Oyama, C. Watanabe and R. Monzen Journal of Materials Science 2016
  •  Tensile-stress-induced growth of ellipsoidal ω-precipitates in a Ti-20wt%Mo alloy R. Monzen, R. Kawai, T. Oyama and C. Watanabe Journal of Materials Science 51 3 2490-2498 2016/03
  •  Effects of Small Addition of Ti on Strength and Microstructure of a Cu-Ni-Si Alloy C. Watanabe, S. Takeshita and R. Monzen Metallurgical and Materials Transactions A 46A 6 2015-2469 2015
  •  Effect of external stress on nucleation of ellipsoidal ω precipitates in a Ti-20wt%Mo alloy R. Monzen, R. Kawai and C. Watanabe Journal of Materials Science 2015
  •  Improvement in mechanical properties of a Cu-2.0mass%Ni-0.5mass%Si-0.1mass%Zr alloy by combining both accumulative roll-bonding and cryo-rolling with aging Y. Takagawa, Y. Tsujiuchi, C. Watanabe, R. Monzen, N. Tsuji MATERIALS TRANSACTIONS 53 1 1-8 2013/01

show all

  •  Stress-assisted nucleation and growth of γ" and γ' precipitates in a Cu-1.2wt%Be-0.1wt%Co alloy aged at 320℃ PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND 92 1 1826-1843 2012/01
  •  Deformation of Cu-Be-Co alloys by aging at 593K H. Hasegawa, Y. Takagawa, C. Watanabe and R. Monzen MATERIALS TRANSACTIONS 52 8 1685-1688 2011/08
  •  Bend Formability and Strength of Cu-Be-Co Alloys  R. Monzen, T. Hosoda, Y. Takagawa and C. Watanabe JOURNAL OF MATERIALS SCIENCE 46 4284-4289 2011/03
  •  Influence of external stress on discontinuous precipitation behavior in a Cu-Ag Alloy R. Monzen, T. Terazawa and C. Watanabe METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIAL 41 8 1936-1941 2010/08
  •  Coarsening of cuboidal Al3Sc precipitates in an Al-Mg-Sc alloy C. Watanabe, R. Tanii and R. Monzen PHILOSOPHICAL MAGAZINE LETTERS 90 2 103-111  2010/02
  •  Effect of external stress on discontinuous precipitation in a Cu-2.1wt%Be alloy R. Monzen, T. Hasegawa and C. Watanane PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND 90 10 1347-1358  2010/05
  •  The bcc-to-9R martensitic transformation of Cu precipitates and the relaxation process of elastic strains in an Fe-Cu alloy Philosophical Magazine A 80 3 711-723 2000/03
  •  Determination of the interface energies of spherical, cuboidal and octahedral fcc precipitates in Cu-Co, Cu-Co-Fe and Cu-Fe alloys D. Watanabe, C. Watanabe, R. Monzen ACTA MATERIALIA 57 8 1899-1911 2009/04
  •  Structural changes of 9R copper precipitates in an aged Fe-Cu alloy Pilosophical Magazine Letters 80 3 137-148 2000/03
  •  Effect of coherency on coarsening of second phase precipitates in Cu-base alloys D. Watanabe, C. Watanabe, R. Monzen JOURNAL OF MATERIALS SCIENCE 43 11 3946-3953 2008/11
  •  Sliding of copper [001] twist grain boundaries detected by shear deformation of liquid B2O3 particles on the boundaries ACTA MATERIALIA 48 8 1959-1966 2000/04
  •  Misfit strains of precipitated phases and dimensional changes in Cu-Be alloys C. Watanabe, T. Sakai, R. Monzen PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND 88 9 1401-1410 2008/03
  •  Misorientation dependence of discontinuous precipitation in Cu-Be alloy bicrystals JOURNAL OF MATERIALS SCIENCE 35 23 5839-5843 2000/11
  •  Coarsening of spherical a-Fe particles in a Cu matrix SCRIPTA MATERIALIA 43 11 1039-1043 2000/12
  •  Diffusional relaxation around 9R Cu martensite particles in an Fe matrix Ceramics Transactions 118 155-162 2000/12
  •  Discontinuous precipitation at [001] twist boundaries in Cu-0.75wt%Be alloy bicrystals Metallurgical and Materials Transactions A 32 5 1075-1079 2001/05
  •  Embrittlement of Cu [011] symmetric tilt boundaries induced by Sb Segregation The Fourth Pacific Rim International Conference on Advanced Materials and Processing 2001/12
  •  Misorientation dependence of Discontinuous precipitation reaction at [001] twist boundaries in a Cu-0.75mass%Be alloy The Fourth Pacific Rim International Conference on Advanced Materials and Processing 799-802 2001/12
  •  Ostwald ripening of spherical Fe particles in Cu-Fe alloys PHILOSOPHICAL MAGAZINE LETTERS 82 7 373-382 2002/07
  •  Embrittlement of Cu [001] symmetric tilt boundaries ZEITSCHRIFT FUR METALLKUNDE 93 8 840-844 2002/08
  •  Effects of alloying elements on discontinuous DEFECT AND DIFFUSION FORUM 213-215 75-82 2003/03
  •  Sb-induced embrittlement of [011] METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIAL 34 4 773-779 2003/04
  •  Effect of Sb on coarsening of Fe particles in a Cu-Fe alloy PHILOSOPHICAL MAGAZINE LETTERS 83 7 433-440 2003/07
  •  Coarsening kinetics of Cu particles in an a-Fe matrix ZEITSCHRIFT FUR METALLKUNDE 94 11 1241-1246 2003/11
  •  Coarsening of spherical Cu particles in an a-Fe matrix R. Monzen, K. Takada, C. Watanabe ISIJ INTERNATIONAL 44 2 442-444 2004/02
  •  Ostwald ripening of rod-shaped a-Fe particles in a Cu matrix MATERIALS LETTERS 58 5 2007-2011 2004/05
  •  Discontinuous precipitation in {100} planes in a Cu-5.7wt% Ag alloy single crystal PHILOSOPHICAL MAGAZINE LETTERS 84 6 349-358 2004/07
  •  Coarsening of Al3Se precipitates in an Al-0.28wt% Sc alloy C. Watanabe, T. Kondo, R. Monzen METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIAL 9 35 3003-3008 2004/09
  •  Misorientation dependence of intergranular embrittlement of Cu-2.0wt%Sb bicrystals R. Monzen, O. Matsuda, H. Miura MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROST 390 10 357-360 2004/10
  •  Initiation and growth of the discontinuous R. Monzen, C. Watanabe, D. Mino, S. Saida ACTA MATERIALIA 53 2 1253-1261 2005/01
  •  Effect of external stress on discontinuous precipitation in {100} planes in a Cu-5.7wt% Ag single crystal R. Monzen, H. Nagayoshi, C. Watanabe, S. Onaka PHILOSOPHICAL MAGAZINE LETTERS 85 1 13-20 2005/01
  •  Microstructute and Mechanical Properties of a Cu-Ni-Si Alloys C. Watanabe, H. Hiraide, Z. Zhang, R. Monzen Journal of the Society of Materials Science, Japan 54 7 717-723 2005/07
  •  Coarsening of Al3Sc particles in an Al-Mg-Sc alloy C. Watanabe, D. Watanabe, R. Monzen, K. Tasaki Proceedings of an Inter. Conf. on Solid-Solid Phase Transformations in Inorganic Materials 803-808 2005/08
  •  Discontinuous precipitation in a Cu-4mass%Ni-0.95mass%Si alloy C. Watanabe, R. Monzen, K. Higashimine Proceedings of an Inter. Conf. on Solid-Solid Phase Transformations in Inorganic Materials 713-718 2005/08
  •  Effect of applied stress on precipitation of GP zones in a Cu-0.9wt%Be single crystal R. Monzen, C. Watanabe, T. Seo, T. Sakai PHILOSOPHICAL MAGAZINE LETTERS 85 11 603-612 2005/11
  •  Elastic state of rod-shaped Ag precipitates in a Cu-5.7wt%Ag single crystal C. Watanabe, R. Monzen, H. Nagayoshi, S. Onaka PHILOSOPHICAL MAGAZINE LETTERS 86 2 65-73 2006/02
  •  Improvements of Mechanical Properties in a Cu-4.0mass%Ni-0.95mass%Si-0.02mass%P Alloy C. Watanabe, M. Miyakoshi, F. Nishijima, R. Monzen Journal of the IRICu 45 1 16-22 2006/07
  •  Bend Formability and Microstructure in a Cu-4mass%Ni-1mass%Si-0.02mass%Si Alloy H. Nagayoshi, F. Nishijima, C. Watanabe, R. Monzen, T. Hara Journal of Japan Institute of Metals 70 9 750-755 2006/09
  •  Coarsening behavior of Al3Sc precipitates in an Al-Mg-Sc alloy C. Watanabe, D. Watanabe, R. Monzen MATERIALS TRANSACTIONS JIM 47 9 2285-2291 2006/09
  •  Effect of Annealing on High-Cycle Fatigue of an Al-Mg-Sc Alloy Produced by Equal-Channel Angular Pressing C. Watanabe, R. Monzen, K. Tazaki Journal of the Society of Materials Science, Japan 55 9 837-842 2006/09
  •  Precipitation processes in a Cu-0.9wt%Be single crystal R. Monzen, T. Seo, T. Sakai, C. Watanabe MATERIALS TRANSACTIONS JIM 47 12 2925-2934 2006/12
  •  Ostwald Ripening of Co Particles in a Cu-1mass%Co Alloy D. Watanabe, K. Higashi, C. Watanabe, R. Monzen J. Japan Inst. of Metals 71 2 151-157 2007/02
  •  Coarsening kinetics of Al3Sc precipitates in an Al-Mg-Sc alloy aged at 573 K D. Watanabe, C. Watanabe, R. Monzen MATERIALS TRANSACTIONS JIM 48 6 1571-1574 2007/06
  •  Mechanical and Electrical Properties and Microstructure in Cu-Ni-Be Alloys S. Ota, N. Muramatsu, K. Sengoku, C. Watanabe, R. Monzen 56 6 531-536 2007/06
  •  Mechanical properties of Cu-4.0wt%Ni-0.95wt%Si alloys with and without P and Cr addition C. Watanabe,F. Nishijima, R. Monzen, K. Tazaki Materials Science Forum 561-565 2297-2300 2007/07
  •  Metastable precipitates and their misfit strains in a Cu-0.9wt%Be single crystal R. Monzen, T. Sakai, C. Watanabe Materials Science Forum 561-565 2321-2324 2007/07
  •  Effect of Nitrogen on Fatigue Behavior of a High-Speed Steel T. Mitani, T. Hasegawa, C. Watanabe and R. Monzen Journal of Japan Institute of Metals 72 2 105-110 2008/02
  •  Mechanical properties of Cu-Cr system alloys with and without Zr and Ag C. Watanabe, R. Monzen JOURNAL OF MATERIALS SCIENCE 43 3 813-819 2008/03
  •  Coarsening behavior of Co precipitates in a Cu-Co alloy D, Watanabe, C. Watanabe, R. Monzen METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIAL 39 4 725-732 2008/04
  •  Effect of microstructure on fatigue behavior and dislocation structure of an aged Al-Mg-Sc alloy C. Watanabe, R. Monzen, K. Tasaki International Journal of Fatigue 30 4 635-641 2008/04
  •  Microstructure and mechanical properties of Cu-Ni-Si alloys R. Monzen, C. Watanabe MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROST Vol.483-434 117-119 2008/06
  •  Investigation on Stress Relaxation Behavior in Cu-Ni-Sn-P alloys F. Nishijima, K. Nomura, C. Watanabe, R. Monzen Journal Japan Institute of Metals 72 2 427-432 2008/06
  •  Application of neutron diffraction technique to industrial material S. Takahashi, T. Sasaki, Y. Sato, K. Iwafuchi, H. Suzuki, Y. Morii, Y. Kondo, R. Monzen, Y. Hirose Materials Science Forum 571-572 57-62 2008/08
  •  Coarsening of Co-rich precipitates in a Cu-Co-Fe ternary alloy C. Watanabe, D. Watanabe, R. Monzen JOURNAL OF MATERIALS SCIENCE 43 11 3817-3824 2008/11
  •  Fatigue Behavior of a Thermomechanicaliy-Treated W-Mo Type High-Speed Steel T. Mitani, M. Terasawa, T. Hasegawa, C. Watanabe, R. Monzen Journal of Japan Institute of Metals 72 11 847-851 2008/11
  •  Effect of prior deformation on dimensional change and precipitation process in a Cu-1.8wt%Be-0.2wt%Co alloy aged at 320C R. Monzen, T. Hasegawa and C. Watanabe PHILOSOPHICAL MAGAZINE LETTERS 89 2 75-85 2009/02
  •  Stress Relaxation Property of Cu-Ni-Si and Cu-Ni-Be Alloys K. Shimodaira, N. Tanabe, C. Watanabe, R. Monzen Journal of the JRICu 48 1 140-143 2009/07
  •  High-temperature Fatigue Property of a W-Mo Type High-speed Steel T. Terasawa, R. Monzen et al. TETSU-TO-HAGANE 95 9 27-31 2009/09
  •  Influence of Mg and Fe on strength and stress relaxation properties of a Cu-Ni-P alloy  74 5 325-330 2010/05
  •  Mechanical properties of Cu-Ni-Be system alloys R. Monzen, Y. Shimada and C. Watanabe Journal of Physics: Conference Series 240 2010/05
  •  Effect of an applied stress on discontinuous precipitation in a Cu-Ag alloy R. Monzen, T. Terazawa and C. Watanabe Journal of Physics: Conference Series 240 2010/05
  •  Fatigue behavior and microstructure of an Al-Mg-Sc alloy at an elevated temperature C. Watanabe and R. Monzen Journal of Physics: Conference Series 240 2010/05
  •  Effect of applied stress on nucleation and growth of precipitates in a Cu-Be-Co alloy  R. Monzen, T. Terazawa and C. Watanabe MATERIALS SCIENCE FORUM 654-656 922-925 2010/10
  •  Low-Cycle Fatigue Behavior of an Al-Mg-Si Alloy with and without a Small Addition of Sc  C. Watanabe and R. Monzen MATERIALS SCIENCE FORUM 654-656 2010/10
  •  Coarsening of δ-Ni2Si precipitates in a Cu-Ni-Si alloy, C. Watanabe and R. Monzen JOURNAL OF MATERIALS SCIENCE 46 4327-4335 2011/03
  •  Mechanical properties of precipitation strengthening Cu-base alloys highly deformed by ARB process R. Monzen, Y. Takagawa, C. Watanabe, D. Terada and N. Tsuji Procedia Engineering 10 2417-2411 2011/07
  •  Precipitation Process in a Cu-Ni-Be alloy C. Watanabe and R. Monzen SOLID STATE PHENOMENA 172-174 432-436  2011/08
  •  Influence of Accumulative Roll Bonding and Cold Rolling Processes on the Precipitation Strengthening Properties for Cu-Ni-P Alloy 75 9 509-515  2011/09
  •  Effects of microstructures on fatigue behavior of an Al-Mg-Sc alloy at an elevated temperature C. Watanabe, R. Monzen MATERIALS SCIENCE FORUM 706-709 426-430 2012/02
  •  Discontinuous precipitation behavior and microstructure in Mg-Al system alloys Takeshita, Satoshi; Watanabe, Chihiro; Monzen, Ryoichi; Saikawa, Seiji Keikinzoku/Journal of Japan Institute of Light Metals 64 10 470-475 2014/01/01 
  •  Influence of thermomechanical treatment on strength of a Cu-21 mass%Ni-5.5 mass%Sn alloy Ozawa, Atsushi; Watanabe, Chihiro; Monzen, Ryoichi; Muramatsu, Naokuni Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 78 9 344-349 2014/01/01 
  •  Tensile properties of an age-hardenable Cu-Ni-Si alloy processed by high-pressure torsion T. Oshima, T. Fukuoka, K. Kita, C. Watanabe, R. Monzen and Y. Todaka Journal of Japan Institute of Copper 55 1 11-16 2016/07
  •  Growth process of ω-precipitates in a Ti-20mass%Mo alloy Y. Shimogami, T. Oyama, C. Watanabe and R. Monzen Journal of Japan Institute of Metals and Materials 81 2 97-100 2017/02
  •  Effects of natural aging on age-hardening behavior of Cu-Be-Co and Cu-Ti alloys processed by high-pressure torsion C. Watanabe, M. Hibino, R. Monzen, S. Ii and K. Tsuchiya Materials Transactions 57 9 1471-1475 2016/09
  •  Microstructure and aging behavior of Cu-Be alloy processed by high-pressure torsion C, Watanabe, R. Monzen, S. Ii and K. Tsuchiya Mater. Sci. Forum 783-786 2707-2712 2014
  •  Influence of Co on strength of Cu-Ni-Co-Si alloy A. Ozawa, C. Watanabe and R. Monzen Mater. Sci. Forum 783-786 2468-2463 2014

Conference Presentations

Arts and Fieldwork

Patent

Theme to the desired joint research

○Development of Cu-Base Alloys for Terminals

Grant-in-Aid for Scientific Research

○「ECAE法による超微結晶Al-Mg-Sc合金の熱的安定性の向上と疲労特性の評価」(2002-2003) 
○「ナノ組織制御によるCu-Cr-Ag-Zr系合金の電気的・機械的機能複合化」(2005-2006) 
○「ナノ組織制御による銅基合金の電気的・機械的特性の高度複合化」(2007-2009) 
○「高強度・高導電性を有するCu-Ni-Fe-P合金の開発」(2011-2013) 
○「高強度で良好な導電性と耐応力緩和特性を有する時効硬化型Cu-Ni-Sn合金の開発」(2015-2017) 

Classes (Bachelors)

○Materials for Machine IA(2017)
○Materials for Machine IB(2017)
○Materials for Machine II(2017)
○Materials for Machine I(2016)
○Materials for Machine II(2016)
○Introduction to Mechanical Engineering B(2016)
○Introduction to Mechanical Engineering A(2016)

Classes (Graduate Schools)

○Properties of Metals(2017)
○Properties of Metals(2017)
○Advanced Course of Physical Metallurgy A(2017)
○Fundamentals of Management of Technology B(2017)
○Advanced Course of Physical Metallurgy B(2017)
○Fundamentals of Management of Technology A(2017)
○Fundamentals of Management of Technology A(2017)
○Fundamentals of Management of Technology(2017)
○Properties of Metals(2017)
○Properties of Metals(2017)
○Fundamentals of Management of Technology A(2017)
○Fundamentals of Management of Technology B(2017)
○Fundamentals of Management of TechnologyB(2017)
○Properties of Metals(2016)
○Fundamentals of Management of Technology(2016)
○Advanced Course of Physical Metallurgy A(2016)
○Advanced Course of Physical Metallurgy B(2016)
○Fundamentals of Management of Technology(2016)
○Fundamentals of Management of Technology(2016)
○Fundamentals of Management of Technology(2016)

International Project

International Students

Lecture themes

Others (Social Activities)

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