C.Y. Li1)
,
H.Q. Yuan2)
,
F.X. Meng3) and Z. Zhou4) 1) Institute of Liaoning Technology
,
Jinzhou 121001
,
China 2) Northeastern University
,
Shenyang 10006
,
China 3) Shenyang University
,
Shenyang 110044
,
China 4) Xincheng Rare Earth Magnetostrictive Materials Ltd.
,
Dashiqiao 115100
,
China
金属学报(英文版)
The physical modelanditsequivalentcircuitoftestapparatusissetup by meansofimpedanceanalysis method. The magnetostriction coefficient, magnetomechanicalcoupling coefficient,frequency and anti- frequency of TbxDy1 - xFe2 - z(0 27 ≤x ≤0 3 ,0 ≤z ≤0 1) rod are measured. Somecoupling problems with mechanicalstress and electromagnetic field such as flux leakage in magnetic path are discussed. The comparing calculated with tested resultsshowsthe accuracyof measurementand thesimplification of model.
关键词:
magnetostriction material
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null
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Z.L. Li1
,
2)
,
C.X.Ma2) and Z.L.Liu1) 1) Department of Materials Science and Engineering
,
Liaoning Institute of Technology
,
Jinzhou 121001
,
China 2) Collage of Science
,
Northeast University
,
Shenyang
,
110006
,
China
金属学报(英文版)
Theempiricalelectrontheory of solidsand molecules( EET) and theimproved TFDtheory wereapplied tocalculatethe phasestructurefactorsand interfaceconjunction factorsofcom mon alloying elementsin high speed impact resistance ( HSIR) steel. According tothese va lenceelectron structure parametersitis deduced thatthe alloying elements of high propertyHSIRsteelshould be Mn, Cr, Ni and Mo. The microscopicstructure ofthesteel with this compositionisthe mixtureof martensite, bainiteand austeniteafter quenching andlow tem peraturetempering.Itspropertiesare:σb = 1750 MPa,σ0 2 = 1460 MPa,δ5 = 12 7 % , AKV(at 40 ℃, cross direction) = 21J, which exceed the requirement of design. For the thick plateof high property HSIRsteel,itissuggestedto add alittleamountof Cu on thebasisofabovecomposition .
关键词:
High speed impact resistancesteel
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null
Z.L.Li
,
Z.L.Liu
,
F.Y.Li
,
X.P.Yang and Z.G.Gu Departmentof Materials Science and Engineering
,
Liaoning Institute of Technology
,
Jinzhou 121001
,
China
金属学报(英文版)
Theempiricalelectrontheory of solidsand molecules( EET) and theimproved TFDtheory wereapplied tocalculatethe phasestructurefactorsand interfaceconjunction factorsofcom mon alloying elementsincastiron. Akind of Si- Mo- Cu ductileiron with rareearth Mg asnodularizer was designed accordingtothese valenceelectron structure parameters. Actual applicationtestsshow thatthelongevity of thisiron is 1.5 timesof thatof high manganesesteel. This accordance of theoretical results and actual effectsshows the composition design methodcan beused in othercastiron research.
关键词:
phasestructure factor
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null
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null
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null
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