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RISEffect of aluminum on stability of retained austenite in bainitic ductile cast iron
The effect of aluminum additives on the microstructure of bainitic malleable cast iron after heat treatment consisting of isothermal hardening at 350°C in a bath with molten lead after a hold at 920°C for 90 min is studied. ...
Effect of aluminum on stability of retaine austenite in bainitic malleable cast iron
The presence of well distributed graphite in the matrix, and a relatively high volume fraction of retained austenite, are responsible for the good mechanical properties of the austempered ductile irons including excellent ...
Oxidation behaviour of Al-alloyed ductile cast irons at elevated temperature
The oxidation resistance of ductile irons alloyed with aluminium in the range from 0.08 to 6.16 wt.% has been investigated by heating at 550°C for periods up to 1270 h. Examination by light and SEM microscopy and EPMA ...
الگوی جدایش میکروسکوپی آلومینیوم (Al) و سیلیسیم (Si) در ریزساختار زمینه ی چدن ها با گرافیت کروی
الگوی ریزجدایش عناصر آلیاژی آلومینیوم و سیلیسیم در چدن ها با گرافیت کروی تحقیق شده است. تجزیه های میکروسکوپی توسط EDX و EPMA بیانگراین واقعیت است که در زمینه چدن های ریختگی آزمایش شده نایکنواختی وجود دارد. در نواحی نزدیک ...
Phase Transformation Study of Aluminium Containing Ductile irons by Dilatometry
The temperature for the start of martensite formation (MS) for three Al-alloyed ductile irons containing 0.48%Al, 4.88%Al and 6.16%Al were determined by high-speed dilatatometry. Microscopic observation also were used to ...
GRAPHITE PHASE FORMATION IN AL-ALLOYED
The influence of aluminium, within the range of 0.08 - 6.16 wt.%, on the microstructure and hardness of as-cast ductile cast iron have been studied. A number of irons of different composition have been made by green sand ...
Graphitization in CK 45 Steel
The purpose of this study was to determine the influence of heat treatment cycle on graphite phase formation on CK 45 steel. The presence of well distributed graphite in the matrix is responsible for the good mechanical ...
اثر آلومینیوم بر ریزساختار و خواص مکانیکی چدن های نشکن آستمپر شده
در این مقاله اثر افزایش عنصر آلومینیوم تا 5/8 درصد بر ریزساختار، خواص مکانیکی و مقاومت اکسیداسیون چدن های نشکن و چدن نشکن آستمپر شده بررسی شده است. برای یافتن مناسب ترین سیکل عملیات حرارتی آستمپرکردن و تعیین ترکیب شیمیایی ...
Carbide Precipitation in the Microstructures of Austempered Ductile Irons Containing 0.48% and 4.88% Al
The influence of aluminium on the microstructure of austempered ductile cast iron (ADI) has been studied. The presences of well distributed graphite in the matrix, and a relatively high volume fraction of retained austenite, ...
The Bainite Transformation and the Carbide Precipitation of 4.88% Aluminium Austempered Ductile Iron Investigated Using Electron Microscopy
The transformation to a bainitic microstructure during austempering under different conditions was examined for the most successful of the experimental casts. Austenitising temperature of 920C and austempering temperatures ...