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Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1964

On the Quenching Effects of the Mixture of Medium-Fraction Mineral Oils, Rape Seed Oil and Fatty Acid Ester.

Yoshinori Fujimura; Tomo-o Sato

押 出圧 力 は時 間 と とも に減 少 して い る.こ の現 象 が 押 出速度の減少によるもの と考えて解析 する と,押 出圧力 は押出速度 のn乗 に比例 しているこ とが分かつた.各 条 件の場合 についてnの 値を求 めたが,変 形抵抗 と歪速度 との関係 におけ る%の 値 とかな りよ く一致 した.こ の こ とか ら押 出 しにおけ る歪速度が押 出速度 に比例 し,押 出 圧 力が材料 の変形抵抗に比例 している との考 えは正 しい と考 えられ る. 本実験 は,総 合研 究 として行 なわれ たもので,御 指導 いただいた金属材料技術 研究所長橋本宇一博士 に深 く感 謝 の意 を表す る. 文 献 1) P. G. SHEWMON and V. F. ZACKAY: Response of metals to high velocity deformation, Interscience Publishers, (1961). 2) 河 田和 美, 武 内 朋 之, 隈 部 智雄: 塑 性 と加工, 4 (1963) 24, p.877~884 3) J. W. WALLACE: Journal of the Institute of Metals, 90(1961•`62) 2, p.38•`41 4) 鉄 鋼技 術 共 同研 究 会 編: 圧 延理 論 と変 形 抵抗, 誠 文 堂 新 光 社, (1960), p.104~169 5) 川 村 宏矣: 鉄 と鋼, 43 (1957) 8, P.826~848 6) C. E. PEARSON and R. N. PARKINS: The extrusion of metals, CHAPMAN and HALL LTD. (1960).


Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1960

On Carbides in Cr-Mo-V Hot-Working Tool Steels

Tomo-o Sato; Taiji Nishizawa; Koreaki Tamaki

On Carbides in Cr-Mo-V Hot-Working Tool Steels. (Study on carbides in commercial special steels by electrolytic isolation-X) Tomo-o Sato, Taiji Nishizawa and Koreaki Tamaki. Synopsis: Chemical and X-ray analyses were carried out on carbides, isolated electrolytically from the as-annealed, as-quenched and as-tempered structures of chromium-base hot-working tool steels. Carbides found in the as-annealed structures are M23C6, M6C and MC, similarly to the carbides in tungsten-base hot-working tool steels. M7C3 and ξ carbide expected from the equilibrium diagrams for Fe-C-Cr and Fe-C-Mo systems were not observed in the as-annealed structures. Carbide reactions during tempering are complicated, but are regarded as the combination of four sequences, which proceed separately in chromium, molybdenum, vanadium and tungsten steels; that is (i) M3C→M7C3→M23C6, (ii) M3C→Mo2C→M6C, (iii) M3C →MC, and (iv) M3C→W2C→M6C+M23C6. The rate of the carbide reactions taking place towards equilibrium during tempering were very slow, owing to the low mobility of molybdenum atoms.


Materials Transactions | 1960

The Equilibrium Diagram of the Ti-Al System

Tomo-o Sato; Yen-Chien Huang


Journal of The Japan Institute of Metals | 1959

A Study on Hardness of Carbides in Iron and Steel

Tomo-o Sato; Taiji Nishizawa; Jô Ishiwara


Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1963

The Composition of Quenching Oil and the Quenching Effects of Fatty Oil and Fatty Acid Ester

Yoshinori Fujimura; Tomo-o Sato


Journal of The Japan Institute of Metals | 1960

Carbides in Molybdenum Steels

Tomo-o Sato; Taiji Nishizawa; Koreaki Tamaki


Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1959

On Carbides in Tungsten High Speed Steels.

Tomo-o Sato; Taiji Nishizawa; Kousuke Murai


Journal of The Japan Institute of Metals | 1957

Study on Carbides in Iron and Steel by Electrolytic Isolation (8th Report). Carbides in Tungsten Steel

Tomo-o Sato; Taiji Nishizawa; Masaki Ôhashi


Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1956

STUDY ON CARBIDES IN PRACTICAL SPECIAL STEELS BY ELECTROLYTIC ISOLATION (II): On Carbides in High C-High Cr Die Steel@@@高C高Crダイス鋼の炭化物について

Tomo-o Sato; Yutaka Honda; Taiji Nishizawa


Journal of The Japan Institute of Metals | 1956

Study on Carbides in Iron and Steel by Electrolytic Isolation (Report 5). Effect of Various Elements on Curie Point of Cementite

Tomo-o Sato; Taiji Nishizawa

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Etsujiro Yajima

Nagoya Institute of Technology

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Katashi Masumoto

Ishinomaki Senshu University

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Toru Miyazaki

Nagoya Institute of Technology

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