The Influence Of The Rare Earth Metals Modification On The Fracture Toughness Of G17CrMo5-5 Cast Steel At Low Temperatures

Archives of Metallurgy and Materials

Pała R.¹  Kasińska J.¹  Dzioba I.¹ 

[1] KIELCE UNIVERSITY OF TECHNOLOGY, AL. TYSIĄCLECIA P.P. 7, 25-314 KIELCE, POLAND;

关键词: modification;    rare earth metals (REM);    fracture toughness;    master curve;    temperature of brittle-to-ductile transition;   

DOI  :  10.1515/amm-2015-0205

来源: DOAJ

【 摘 要 】

This paper presents the influence of the rare earth metals (REM) modification on mechanical properties and fracture toughness of G17CrMo5-5 cast steel at low temperatures. The REM was in the form of mishmetal. The research has been performed on serial (several) industrial melts. The fracture toughness values of unmodified and modified cast steel at the temperature range from −80°C to 20°C were tested. The reference temperatures of the brittle-to-ductile transition, TQ, for both unmodified and modified cast steel were determined. The positive influence of the modification by REM on the fracture toughness and the reference temperature TQ are shown.

【 授权许可】

Unknown