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ferromagnetic properties

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
... Abstract This article discusses the ferromagnetic properties of soft magnetic materials, explaining the effects of impurities, alloying elements, heat treatment, grain size, and grain orientation on soft magnetic materials. It describes the types of soft magnetic materials, which include high...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005896
EISBN: 978-1-62708-167-2
.... The article also discusses the magnetic properties of diamagnetic, paramagnetic, ferromagnetic, ferrimagnetic, antiferromagnetic, and metamagnetic materials. coefficient of linear thermal expansion density electrical resistivity ferrous metals magnetic properties nonferrous metals nonmetallic...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001093
EISBN: 978-1-62708-162-7
... Abstract Magnetically soft materials are characterized by their low coercivity, an essential requirement for irons and steels selected for any application involving electromagnetic induction cycling. This article provides information on ferromagnetic material properties and how...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005857
EISBN: 978-1-62708-167-2
... and the examination of any resulting changes of magnetic flux in the region of interest. Magnetic methods are unique to steel because they use the inherent ferromagnetic properties of the steel for NDE of a wide range of material properties, from cracks to residual strain. Nevertheless, the magnetic methods have...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006442
EISBN: 978-1-62708-190-0
... within a ferromagnetic material subjected to an applied varying magnetic field. Measurement and analysis of induced signals are used to infer the condition and properties of the material. Such methods include magnetic Barkhausen noise (MBN) and magnetoacoustic emission (MAE). These techniques are used...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003233
EISBN: 978-1-62708-199-3
... Metallurgical and Magnetic Properties Metallurgical properties of ferromagnetic materials, such as crystallographic phase, chemical composition, and microstructure, affect their magnetic characteristics, which makes it possible to use magnetic measurements to monitor properties. Some parameters...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... is defined as the demagnetizing factor, or: Δ H = N ( B − H ) / 4 π The effect of air gaps is to shear the magnetization curve. Ferromagnetism and Factors Affecting Magnetic Quality Magnetic properties of magnetic materials depend on the chemical composition, cold...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... Abstract Magnetic-particle inspection is a nondestructive testing technique used to locate surface and subsurface discontinuities in ferromagnetic materials. Beginning with an overview of the applications, advantages, and limitations of magnetic-particle inspection, this article provides...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001752
EISBN: 978-1-62708-178-8
... of nuclear magnetic resonance with emphasis on nuclei properties, the basic equation of nuclear magnetic resonance, the classical theory of nuclear magnetization, line broadening, and measurement sensitivity. It describes the pulse-echo method for observing NMR. The article provides useful information...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005877
EISBN: 978-1-62708-167-2
..., and electromagnetic forces. differential equations electrical properties magnetic properties mathematical modeling Electromagnetic problem solutions are based on the macroscopic theory of the continuous model for the electromagnetic field (EMF). It is described by a system of integral or partial...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003086
EISBN: 978-1-62708-199-3
...-Purpose Materials” in this Handbook. Fig. 3 Schematic of the flux density, B , versus magnetic field strength, H , for diamagnetic, paramagnetic, and ferromagnetic materials Optical Properties Several optical properties of smooth, bare, unoxidized metal surfaces are important in some...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001400
EISBN: 978-1-62708-173-3
... parameters (electromagnetic properties and part geometry). The first consideration regarding the use of induction heating in a soldering operation is the electrical and magnetic properties of the materials to be joined. First, the energy coupling is more efficient in ferromagnetic materials...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006056
EISBN: 978-1-62708-175-7
... Abstract Quality control of cemented carbides includes the evaluation of physical and chemical properties of constituent raw material powders, powder blends/formulations, green compacts, and fully dense finished product. This article provides a summary of the underlying principles and size...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
..., such as 17-4 PH, 17-7 PH, and 15-4 PH stainless steels, are magnetic after aging. Metals can lose their ferromagnetic properties above a characteristic temperature called the Curie point. Although this temperature varies for different materials, the Curie point for most ferromagnetic materials...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003154
EISBN: 978-1-62708-199-3
... reversible if the original properties of the magnet return when the disturbing influence is removed. Time Effects at Constant Temperature In ferromagnetic materials, the intensity of magnetization does not instantly attain its equilibrium value when the applied field is suddenly changed. This time...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005879
EISBN: 978-1-62708-167-2
... of ferromagnetic bodies, the magnetic permeability (μ) experiences even greater changes. A similar situation occurs with the material properties used in temperature calculations, that is, the specific heat ( c ), thermal conductivity (λ), and convection and radiation heat transfer coefficients (α c and α r...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
.... These techniques rely on the change in magnetic properties of the material caused by stress; this is known as the magnetoelastic effect. These techniques, therefore, apply only to ferromagnetic materials, such as steel. Rapid Identification of Metals and Alloys Quality assurance during the fabrication...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005761
EISBN: 978-1-62708-165-8
... it, and manganese and nickel decrease it. In physical terms, the decrease in magnetic permeability with temperature in carbon steel signifies the loss of ferromagnetic properties. Below the Curie point, heating occurs as a result of both eddy-current losses and hysteresis losses. The latter are no longer...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003788
EISBN: 978-1-62708-177-1
... to understanding the properties of magnetic materials. Magnetic materials are classified as either magnetically soft or magnetically hard. Soft magnetic materials are typically used for applications where small, applied magnetic fields are used to switch the magnetization direction (i.e., transformer cores...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003234
EISBN: 978-1-62708-199-3
... of electromagnetic induction and is used to identify or differentiate a wide variety of physical, structural, and metallurgical conditions in electrically conductive ferromagnetic and nonferromagnetic metals and metal parts. Eddy-current inspection is used: To measure and identify conditions and properties...