Microstructure and mechanical properties of austempered medium carbon steels

Takeshi Suzuki, Yoshiki Ono, Goro Miyamoto, Tadashi Furuhara

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Microstructures and mechanical properties for medium carbon steels including practical spring steels austempered at 400°C and 300°C were investigated. The larger strain was applied, the larger the fraction of retained au stem te became martensite through strain induced transformation. 0.2% proof stress was increased by the increase of the fraction of bainitic ferrite. Uniform elongation was increased by increasing the fraction of retained austenite. Good strength-ductility balance with tensile stress over 1800MPa for high strength spring was achieved in austempered SUP12 at 300°C composed of three phases of retained austenite, martensite and lower bainite.

本文言語English
ページ(範囲)26-33
ページ数8
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
97
1
DOI
出版ステータスPublished - 2011

ASJC Scopus subject areas

  • 凝縮系物理学
  • 物理化学および理論化学
  • 金属および合金
  • 材料化学

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