誘導加熱焼入れ焼もどししたばね鋼の組織と機械的性質の特徴

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タイトル別名
  • Micro-structure and Mechanical Properties of Induction Heating Quenched and Tempered Spring Steel
  • ユウドウ カネツ ヤキイレ ヤキ モドシシタ バネ コウ ノ ソシキ ト キ

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抄録

In order to clarify the characteristics of Induction Heating Quenching and Induction Heating Tempering (IHQIHT) as heat-treating process, micro-structure and mechanical properties of quenched and tempered Si-Cr spring steel (SUP12) by IHQIHT as well as by conventional Furnace Heating Quenching and Furnace Heating Tempering (FHQFHT) were investigated.<BR>(1) Micro-structure of IHQIHT material shows finer grain and less decarburization than those of FHQFHT material.<BR>(2) Ductility, toughness, fracture toughness, resistivity to delayed fracture, resistivity to permanent deformation, and fatigue life of IHQIHT material are superior to those of FHQFHT material. In case of SUP 6, SUP 7, SWRH62B, and S45C, IHQIHT materials show superior toughness generally.<BR>(3) It is presumed that fine grain and retained austenite of IHQIHT material are effective for the above strengthening and toughening. However, unobvious points are still remained, because the influences of short time austenitizing and tempering are intertwisted mutually.

収録刊行物

  • 鉄と鋼

    鉄と鋼 73 (16), 2290-2297, 1987

    一般社団法人 日本鉄鋼協会

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