Toughness of 2,25Cr-1Mo steel and weld metal

4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN 2016 -- 9 November 2016 through 11 November 2016 -- -- 1305922,25Cr-1Mo steel is extensively used at elevated temperature structural applications in fossil fire power plants for steam pipes, nozzle chambers and petrochemical industry for hydrocracking unit due to its excellent creep resistance and good redundant to oxidation. Also they should have acceptable weldability and toughness. The steels are supplied in quenched and tempered condition and their welded components are subjected to post-weld heat treatment (PWHT). Tempering process is carried out at 690-710°C to improve toughness properties. However they are sensitive to reheat cracking and temper embrittlement. To measure temper embrittlement of the steels and their weld metal, temper embrittlement factor and formula (J factor - Watanabe and X formula- Bruscato) are used. Step cooling heat treatment is also applied to determine temper embrittlement. In this study, toughness properties of Cr Mo (W) steels were reviewed. Also transition temperature curves of 2,25Cr-1Mo steel and its weld metal were constructed before and after step cool heat treatment as experimental study. While 2,25Cr-1Mo steel as base metal was supplied, all weld metal samples were produced in Gedik Welding Company. Hardness measurements and microstructure evaluation were also carried out. © 2017 Author(s)

9th International Symposium on High-Temperature Metallurgical Processing organized in conjunction with the Annual Meeting and Exhibition, TMS 2018

The proceedings contain 83 papers. The special focus in this conference is on High-Temperature Metallurgical Processing. The topics include: CFD modeling of flow and chemical reactions in a submerged lance copper smelting furnace; numerical simulation of ultrasound-induced cavitation bubbling in a calcium ferrite melt; synthesis of nanocrystalline carbide ceramics via reduction of anion-loaded activated carbon precursors; production of lithium-ion cathode material for automotive batteries using melting casting process; degradation mechanisms of refractories in a bottom blown copper smelting furnace; reaction routes of CaO–FeO–TiO and calcium ferrite–TiO system in continuous heating process; thermodynamic calculations on electric furnace smelting separation of chromium-bearing vanadium titanium magnetite; preparation for high activity degree lime and effect on desulfurization of hot metal pretreatment; pyrometallurgical processing of secondary lead material: An industry overlook; techno-economic analysis of energy recovery from plastic waste; recovery of aluminium and its compounds with hydro and pyrometalurgical methods from non-metallic residue; purification of molten zinc chloride-alkali chloride by cementation reaction; thermodynamic analysis of smelting of spent catalysts for recovery of platinum group metals; preparation of titanium foams through direct electrolysis of the sintered CaO-TiO in molten salt CaCl ; experimental study on oxidative desulfurization and selective reduction of molten copper slag; recycling SiO and AlO from the laterite nickel slag in molten sodium hydroxides; removal of sulfur from copper dross generated by refining lead; recovery of Fe–Cu alloys from copper slag; physicochemical properties of high alumina blast furnace slag; effect of cooling rate on the acidolysis of titania slag