Results 1 to 10 of about 445 (113)
Minimizing Deformations in High-Temperature Vacuum Carburizing. [PDF]
Materials (Basel), 2023 This article presents the results of a study on reducing deformations resulting from high-temperature vacuum carburizing and post-carburizing heat treatment. The idea was to increase the strength of steel at elevated temperatures by pre-carburizing at heat-up to the process temperature (SC—stage carburizing).
Atraszkiewicz RP, Dybowski K.
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Journal of Pure & Applied Sciences, 2023 This paper reports the results of an experimental investigation of the effect of carburizing temperature and post carburizing heat treatments on the structural and hardness properties of pack carburized low-carbon steel. The carburizing processes were performed at temperatures of 900°C and 1035°C for 6 hours.
Mohamed Ali Ballem +4 more
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Effects of carburization time and temperature on the mechanical properties of carburized mild steel, using activated carbon as carburizer [PDF]
Materials Research, 2009 Due to the complexity of controlling parameters in carburization, there has been relatively little work on process variables during the surface hardening process. This work focuses on the effects of the carburizing temperature and time on the mechanical properties of mild steel carburized with activated carbon, at 850, 900 and 950 ºC, soaked at the ...
Aramide, Fatai Olufemi +3 more
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Study on carburized steel used in maritime industry: The influences of carburizing temperature
Maritime Technology and Research, 2020 This paper aims to examine the influence of carburizing temperature on carburized mild steel. Carburizing treatment was carried out at carburizing temperatures of 800 and 900 °C with fixed carburizing time of 1 h. The results indicated that carburization treatment could improve the hardness of the samples.
Thee Chowwanonthapunya +2 more
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Industrial & Engineering Chemistry Research, 2023 Prior studies found that the carburization tendency is negligible for technically developed materials at temperatures below 900 degrees C, especially for Al-containing alloys compared to non-Al-containing alloys applied in steam cracking reactors. However, it is unclear whether this benefit remains at higher temperatures.
Mohamadzadeh Shirazi, Hamed +4 more
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Low Temperature Surface Carburization of Stainless Steels [PDF]
, 2007 Low-temperature colossal supersaturation (LTCSS) is a novel surface hardening method for carburization of austenitic stainless steels (SS) without the precipitation of carbides. The formation of carbides is kinetically suppressed, enabling extremely high or colossal carbon supersaturation. As a result, surface carbon concentrations in excess of 12 at. %
Collins, Sunniva R. +2 more
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The Nature of Low Temperature Carburized Layer
, 2018 Carburizing of stainless steels at low temperatures (below 500°C) develops a high content carbon layer, known for its high hardness. X-ray Diffraction investigation indicates that carburization treatment does not impact the structure of substrate; however, introduced carbon causes expansion in the carburized layer through the increase in d ...
Fazel Baniasadi +4 more
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Exploration of low temperature carburizing of steels in ferrite phase.
Journal of Advanced Science, 2001 Various steels are prepared for a carburization in ferrite phase. Effect of alloying elements (Cr, Mo, V) for surface hardness was investigated in this study. We confirmed the low temperature carburizing below the A1 point of steel. The steel containing V and Mo increased in surface hardness to over Hv 600 approximately.
TANAKA, Kei +4 more
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Carburization Behaviour of High Temperature Aalloys in Carburizing Environment
Carburization Behaviour of High Temperature Aalloys in Carburizing Environment高温ガス炉用耐熱合金の浸炭挙動を調べるために、強浸炭雰囲気中での浸炭試験を行った。試験に用いた材料はERANS合金の1つであるr4286,Ni-18.5\% Cr-21.5\% W(F合金)、ハステロイXR及びハステロイXR-IIである。試験は800$^{\circ}$C,850$^{\circ}$C,900$^{\circ}$C,及び950$^{\circ}$Cの(Ar+10\%CH$_{4}$)雰囲気中で行い、次のような結果が得られた。保護酸化膜が形成されない場合、浸炭速度は放物線則に従う。Crの酸化膜が形成されない様な低酸化ポテンシャル環境では、Al及びTiの添加が、それらの保護膜の形成によって、耐浸炭性を改良する。耐浸炭性を合金間で比較すると、2\%Alと2.5 ...
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