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

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

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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 micro-structure 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*verall(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 lossP1.0/400 of 22.43 W/kg,and a yield strength of 527 MPa.

High strength non-oriented silicon steelMicrostructureTextureMagnetic propertiesMechanical properties

Zhaoyang Cheng、Jing Liu、Chunlei Yu、Bolin Zhong、Shenglin Chen、Bing Fu、Soran Birosca

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The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China

Guangdong Provincial Key Laboratory of New Energy Materials Service Safety,College of Material Science and Engineering,Shenzhen University,Shenzhen 518060,China

Hubei Engineering Technology Research Center of Marine Materials and Service Safety,Wuhan University of Science and Technology,Wuhan 430081,China

The R & D Center of Wuhan Iron and Steel Co.,Ltd.,Wuhan 430080,China

School of Mechanical and Design Engineering in the Faculty of Technology,University of Portsmouth,Portsmouth PO1 3DJ,UK

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2024

10.1007/s40195-024-01757-2

金属学报(英文版)
中国金属学会

金属学报(英文版)

CSTPCD
影响因子：0.77
ISSN：1006-7191
年,卷(期)：2024.37(12)