Effects of Silicon and Manganese Addition on Mechanical Properties of High-strength Hot-rolled Sheet Steel Containing Retained Austenite
スポンサーリンク
概要
- 論文の詳細を見る
An 80 kgf/mm2 grade high-strength hot rolled sheet steel with a significantly high product of tensile strength and total elongation (TS×EI=3 000) has been developed by utilizing transformation-induced plasticity of retained austenite in 0.2% carbon sheet steels by optimizing the silicon and manganese content and hot rolling conditions. Finish rolling temperature and coiling temperature are important factors in terms of introducing a large amount of retained austenite. Silicon addition over 1.0% results in a significant increase in the volume fraction of retained austenite due to the change in second phase from bainite+pearlite to bainitic ferrite. The maximum volume fraction of retained austenite and the consequential optimum combination of tensile strength and ductility is obtained in a 0.2%C-2.0%Si-1.5%Mn steel. The effect of retained austenite on ductility becomes small with further addition of manganese over 1.5%, because the retained austenite transforms in the early stage of the straining process due to the presence of martensite.
論文 | ランダム
- 骨小片移植による抜歯創の治療機転に関する実験的研究 : 論文要旨
- 骨小片移植による抜歯創の治癒機転に関する実験的研究
- 60. 骨移植後の移植部ならびにその周辺の血管再生に関する実験的研究(予報)(第 29 回九州歯科学会総会ならびに学術講演会)
- 18. 成犬下顎骨の自家骨移植部における分裂線について(予報)(第 29 回九州歯科学会総会ならびに学術講演会)
- 2. 顎, 顔面奇形を伴った Phocomelia の 1 例(12 月例会, 九州歯科学会月例会報告)