Balancing Magnetic and Mechanical Properties of Non-oriented Electrical Steel:Correlation Between Microstructure and Properties  

作　　者：Zhaoyang Cheng Jing Liu Chunlei Yu Bolin Zhong Shenglin Chen Bing Fu Soran Birosca 

机构地区：[1]The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan,430081,China [2]Guangdong Provincial Key Laboratory of New Energy Materials Service Safety,College of Material Science and Engineering,Shenzhen University,Shenzhen,518060,China [3]Hubei Engineering Technology Research Center of Marine Materials and Service Safety,Wuhan University of Science and Technology,Wuhan,430081,China [4]The R&D Center of Wuhan Iron and Steel Co.,Ltd.,Wuhan,430080,China [5]School of Mechanical and Design Engineering in the Faculty of Technology,University of Portsmouth,Portsmouth,PO13DJ,UK

出　　处：《Acta Metallurgica Sinica(English Letters)》2024年第12期2136-2149,共14页金属学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52074200,52274393);the Science and Technology Project of Hubei Province(2023BAB141);the Natural Science Foundation of Hubei Province(2022CFB091);the State Key Laboratory for Advanced Metals and Materials(2023-ZD03).

摘　　要：High performance e-motors require a continuous enhancement of physical and mechanical properties for non-oriented electrical steel(NOES).However,the optimization of mechanical and magnetic properties simultaneously during NOES processing is extremely challenging where both properties directly influenced by alloy grain size,crystallographic texture,and dislocation density.In the current investigation,recrystallization annealing cycles were employed to modify the microstructure with the aim of balance magnetic and mechanical properties of NOES concurrently.The results showed that with increasing annealing temperatures,the degree of recrystallization and grain size increased,while the dislocation density reduced considerably at the early stage of recrystallization.Meanwhile,the values of texture parameter A*_(overall)(which is a function of overall individual grain orientations and their alignments with easy magnetization directions)were increased.It was evident that the magnetic properties were significantly improved,however the alloy strength was reduced with increasing annealing temperatures.Here,the correlation between magnetic properties as well as alloy strength on grain size,texture,and dislocation density were determined.From crystallographic texture intensity and measured properties quantitative analyses it was concluded that grain size was the predominant factor in balancing the mechanical and magnetic properties of the studied steel.Furthermore,the optimal comprehensive properties(both magnetic and mechanical)were achieved by annealing at 800℃,which yielded a magnetic induction B5000 of 1.616 T,a high-frequency iron loss P_(1.0/400)of 22.43 W/kg,and a yield strength of 527 MPa.

关 键 词：High strength non-oriented silicon steel Microstructure TEXTURE Magnetic properties Mechanical properties 

分 类 号：TG142[一般工业技术—材料科学与工程]