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Koichi Osawa

College of Industrial Technology

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Publication

Featured researches published by Koichi Osawa.

SAE International Congress and Exposition | 1983

DEVELOPMENT OF HIGH-STRENGTH COLD-ROLLED STEEL SHEETS FOR AUTOMOTIVE USE BY CONTINUOUS ANNEALING

Koichi Osawa; Takayoshi Shimomura; Masayuki Kinoshita; Kazuo Matsudo; Koji Iwase

High-strength cold-rolled steel sheets having tensile strength of from 350 to 1,500 MPa with a wide variety of features have been developed by using the continuous annealing process consisting of water-quenching system. Newly developed high-strength steels include dual-phase steels with high bake-hardenability, dual-phase steels with low yield ratio and excellent ductility, dual-phase steels with high deep drawability, ultra high-strength steels and extra deep drawing high-strength steels. This paper describes the metallurgical characteristics of the products of the continuous annealing process consisting of water-quenching system, processing conditions and mechanical properties of these high-strength steels, and their application to automobiles.

Isij International | 1999

Effect of Volume Fraction of Constituent Phases on the Stress-Strain Relationship of Dual Phase Steels

Thomas Hüper; Shigeru Endo; Nobuyuki Ishikawa; Koichi Osawa

Isij International | 1997

Influence of Cu and Sn on Hot Ductility of Steels with Various C Content

Hideki Matsuoka; Koichi Osawa; Moriaki Ono; Masanori Ohmura

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1986

Effects of Carbon and Manganese on the Deep-drawability of Cold-rolled Steel Sheets

Koichi Osawa; Teruo Suzuki; Kazuo Matsudo; Kiwami Kurihara

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1999

Ductile Crack Initiation Behavior of Structural Steel under Cyclic Loading

Nobuyuki Ishikawa; Yasuo Kobayashi; Masayoshi Kurihara; Koichi Osawa; Masao Toyoda

Archive | 1997

High tensile strength hot rolled steel plate excellent in workability and toughness at low temperature, and its production

Satoo Kobayashi; Masaki Omura; Koichi Osawa; Toshiaki Urabe; 俊明 占部; 雅紀 大村; 紘一 大沢; 聡雄 小林

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1989

Effect of the Interaction between Carbon and Substitutional Elements on the Deep Drawability and Texture of Cold-rolled Sheet Steels

Koichi Osawa; Kiwami Kurihara

Archive | 1988

Manufacture of high strength cold rolled steel sheet having 35-45kg/mm2 ts level by continuous annealing

Masayuki Kinoshita; Hiroshi Naemura; Koichi Osawa; Takayoshi Shimomura

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1977

Planar Anisotropy of r Value of High Strength Cold Rolled Steel Sheets

Kazuo Matsudo; Koichi Osawa; Hideo Kobayashi

Quarterly Journal of The Japan Welding Society | 1999

Improvement of Fatigue Properties of Fillet Lap Joints by Applying. Local Heat Treatment with TIG Arc.

Koichi Osawa; Tsuyoshi Shiozaki; Toshiaki Urabe; Akihide Yoshitake; Takanobu Saito; Makoto Kabasawa

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Shigeru Endo

Kobe Steel

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Nobuyuki Ishikawa

Massachusetts Institute of Technology

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Hideo Kobayashi

Kawasaki Steel Corporation

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Kenji Araki

Toshiba

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Kouichi Hamada

Nihon University

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Kyoichi Mine

College of Industrial Technology

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Masao Toyoda

Osaka University

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