Kinetics of Magnetic Ageing of 2%Si Non-oriented Grain Electrical Steel

被引：4

作者：

de Oliveira Junior, Jose Rogerio ^{[1
]}

Monteiro, Renata Aparecida ^{[2
]}

Paolinelli, Sebastiao da Costa ^{[1
]}

Cota, Andre Barros ^{[3
]}

机构：

[1] Aperam South Amer, Res Dept, Timoteo, MG, Brazil

[2] Univ Fed Ouro Preto, REDEMAT, Ouro Preto, MG, Brazil

[3] Univ Fed Ouro Preto, Dept Phys, Ouro Preto, MG, Brazil

来源：

MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2018年 / 21卷 / 01期

关键词：

non-oriented electrical steel; magnetic ageing index; Vickers hardness; simulation; CARBIDE PRECIPITATION;

D O I：

10.1590/1980-5373-MR-2017-0575

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of carbon content on the magnetic ageing index and Vickers hardness evolution on annealed samples of 2%Si non-oriented gram electrical steel was studied.Samples with 40 and 60ppm carbon content were subjected at ageing temperatures of200 and 225 degrees,respectively. During the ageing treatment, the cycle was interrupted on several time intervals in order to obtain the core loss and to determine Vickers hardness. The precipitates were characterized using scanning electron microscope (SEM). Using the software MatCalc, computer simulations of epsilon-carbide precipitation were performed and compared with experimental data from literature. The results for both carbon contents showed that the maximum hardness value was achieved in shorter time than that to achieve the maximum magnetic ageing, indicating that the critical size of precipitates more harmful to the magnetic properties is larger than the ones that maximize the hardness.

引用

页数：6

共 20 条

[1] ABE H, 1984, SCAND J METALL, V13, P226
[2] Associacao Brasileira de Normas Tecnicas (ABNT), 1977, 5161 ABNT NBR
[3] ASTM International, 2003, A34003 ASTM INT
[4] Cullity D., 2009, Introduction to Magnetic Materials, V2nd
[5] Consequences of magnetic aging for iron losses in electrical steels
de Campos, Marcos F.
Emura, Marilia
Landgraf, Fernando J. G.
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 304 (02) : E593 - E595
[6] Humphreys FJ., 2012, Recrystallization and related annealing phenomena
[7] Janssens KGF, 2007, Computational Materials Engineering: An Introduction to Microstructure Evolution
[8] Kozeschnik E., 2001, MATH MODELLING WELD, V5, P349
[9] PRECIPITATION OF CARBIDES IN LOW-CARBON FE-AL-C ALLOYS
LESLIE, WC
RAUCH, GC
[J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1978, 9 (03): : 343 - 349
[10] Magnetic aging anisotropy of a semi-processed non-oriented electrical steel
Marra, KM
Alvarenga, EA
Buono, VTL
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 390 (1-2): : 423 - 426

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