Stability of martensite with pulsed electric current in dual-phase steels

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:677

Article

Lu, W. J.¹  Qin, R. S.² 

[1] Imperial Coll London, Dept Mat, Exhibit Rd, London SW7 2AZ, England

[2] Open Univ, Dept Engn & Innovat, Milton Keynes MK7 6AA, Bucks, England

关键词: Dual-phase steel;    Tempering martensite;    Softening effect;    Nano-crystallization;    Electropulsing treatment;   

DOI  :  10.1016/j.msea.2016.08.123

来源: Elsevier

【 摘 要 】

Softening frequently occurs in dual-phase steels under isothermal tempering of martensite. Recently, non-isothermal tempering is implemented to decrease the softening process in dual-phase steels. Here, we have discovered using high power electropulsing treatment can significantly enhance the strengthening effects via the formation of ultrafine-grained ferrite with nano-cementite particles in tempered martensitic-ferritic steels. To the best our knowledge, electropulsing treatment is a proper candidate to retard even to recovery the softening problems in the tempering of martensite in comparison with other isothermal and non-isothermal tempering methods. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free