A higher corrosion resistance for a bainitic steel with Al instead of Si
نویسندگان
چکیده
منابع مشابه
Corrosion resistance of Si-Al-bearing ultrafine-grained weathering steel.
In the Ultra-steel project at the National Institute for Materials Science (NIMS), which run from 1996 to 2005, high-Si-Al-content ultrafine-grained (UFG) weathering steel was developed by grain refinement and weathering guidance. It was found that this steel has excellent strength, toughness and corrosion resistance. Samples were prepared by multi pass warm rolling at temperatures between 773 ...
متن کاملNumerical Simulation of High Temperature Corrosion Processes in Mn, Cr, Si, Al – Alloyed Steel Samples
The grain boundary oxidation mechanism in hot rolled steel samples during cooling from 500 °C – 800 °C down to room temperature was mathematically modeled. Given a fixed temperature ramp, the migration of the atomic species (iron, oxygen and the alloying elements) has been calculated with the parabolic rate equation for diffusion. After each small time step, the data was transferred into the da...
متن کاملEffects of Bainitic Transformation Temperature on Microstructure and Tensile Properties of 0.6C-Si-Mn Steel
1 緒 言 工具や軸受,ゲ ージなどの精密部品では残留オーステ ナイ ト(rR)が存在すると硬 さや疲労寿命の低下,切 削性 不良あるいは経年形状変化を招きそれらの性質に有害な 影響をもたらす.そ れゆえ,こ れ らに使用する鋼では rRを 極力減少させ るのが好 ましい.し か しなが ら,rR が低合金構造用鋼に存在する場合には延性やじん性が向 上するとともに低温におけるぜい性破壊の防止に役立つ 場合が多い.そ れゆえ,最 近進んで熱処理によって人 為的にrRの 量や存在形態を調整 し混合組織 として優れ た機械的性質 を得ようとす る研究が しばしば見受 けら れ1)~6)る.こ のようなrRを 積極的に利用 しようとする方法 として,近 年Si-Mn鋼 をベイナイ ト変態させるオース テンパー処理が注 目されている. Si-Mn鋼 をベイナイ ト変態 させた場合多量のrRが ...
متن کاملMicrostructure Evolution during Tensile Deformation of a Nanostructured Bainitic Steel
In situ neutron diffraction experiment was used during tensile testing at room temperature to examine the changes on the percentage and texture of both ferrite and austenite in a nanocrystalline bainitic steels transformed at two different temperatures 200°C and 300oC for different times to achieve the same phase percentages. Both samples showed an inadequate capability of austenite to transfor...
متن کاملCut-edge corrosion study on Al-rich metallic coated steel
Aluminium additions to metallic coatings on steel substrates have been accepted as a successful solution versus the standard zinc based coatings. The development of these products responds to the market’s demand of more versatile products, which faces the leaching effect of zinc and the rising cost of obtaining this element, among the main advantages. However, these materials show a special sen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materials Letters
سال: 2016
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2016.02.148