Vanadium micro-alloyed high strength steels for forgings

Metalurgija

Mengaroni, S.¹  Schino, A. Di²  Zitelli, C.² 

[1] ThyssenKrupp Acciai Speciali Terni, Terni, Italy;Università di Perugia, Dipartimento di Ingegneria, Perugia, Italy

关键词: micro-alloying steel;    vanadium;    chemical composition;    heat treatment;    mechanical properties;   

DOI  :  

学科分类：金属与冶金

来源: Hrvatsko Metalursko Drustvo

【 摘 要 】

To fulfill the industrial demand of forged steels with high tensile properties and microstructural requirements coupled with reduced cost, the possibility to increase the properties of C-Mn steels by means of precipitation strengthening as achieved by micro-alloying (and without the addition of expensive elements such as Mo and Cr) has been evaluated. In order to do that, the effect of V addition has been exploited by means of metallurgical modelling followed by a laboratory ingot manufacturing. Heat treatment has been designed aimed to achieve the desired target tensile properties. Results show that ASTM A694 F70 grade requirements can bel fulfilled by 0,15% V addition and a proper heat treatment in a ferrite-pearlite microstructure, representative of a forged component.

【 授权许可】

CC BY