Toughness of 2,25Cr-1Mo Steel and Weld Metal
Küçük Resim Yok
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
AMER INST PHYSICS
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
2,25Cr-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 degrees 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.
Açıklama
4th International Conference on the Advancement of Materials and Nanotechnology ((ICAMN) -- NOV 09-11, 2016 -- MALAYSIA
Anahtar Kelimeler
2.25Cr-1Mo steel, toughness, step cooling heat treatment
Kaynak
4TH INTERNATIONAL CONFERENCE ON THE ADVANCEMENT OF MATERIALS AND NANOTECHNOLOGY (ICAMN IV 2016)
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
1877
