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hard magnetic materials

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730051
EISBN: 978-1-62708-283-9
..., and magnetostatic energy, vary based on the size of the domain. It also discusses the process of magnetization and compares and contrasts hard and soft magnetic materials. ferromagnetism hard magnetic materials magnetic behavior soft magnetic materials References 5.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000131
EISBN: 978-1-62708-312-6
... stainless steels. density magnetic properties physical properties stainless steel powder wrought stainless steel POWDER METALLURGY (PM) offers many advantages with regard to the production of both soft and hard magnetic materials. Powder metallurgy processing is often the most convenient...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170614
EISBN: 978-1-62708-297-6
... – 1020 • Schmucker R.A. Jr. , Cast Alnico Alloys , Casting , Vol 15 , ASM Handbook , ASM International , 1988 , p 736 – 739 Magnetic metals and alloys are broadly classified into two groups with either hard or soft magnetic characteristics. Hard magnetic materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240303
EISBN: 978-1-62708-251-8
... and hard magnets. Soft magnets are used for applications where the material must be easily magnetized and demagnetized, such as for cores of transformers and stator and rotor materials for motors and generators. Hard magnets retain their magnetization and are not easily demagnetized. They are used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
...-resistance alloys, superalloys, refractory metals, low-melting-point metals, reactive metals, precious metals, rare earth metals, and metalloids or semimetals. It also provides a brief summary on special-purpose materials, including uranium, vanadium, magnetic alloys, and thermocouple materials. light...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060407
EISBN: 978-1-62708-261-7
... either hard or soft magnetic characteristics. Hard magnetic materials are characterized by retaining a large amount of residual magnetism after exposure to a strong magnetic field. Until approximately 1930, all the commercial permanent magnet materials were quench-hardening steels. Up to about 1910...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... Dependent on material composition Very Quite Very Magnetic only Little Ability to automate Good Fair Good Fair Fair Capabilities Thickness gauging; some composition testing Thickness gauging Thickness gauging; grade sorting; case depth hardness Defects only Defects only Source...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... testing methods discussed are liquid penetrant inspection, magnetic particle inspection, eddy current inspection, radiographic inspection, and ultrasonic testing. chemical analysis coordinate measuring machines hardness testing machine vision metallography nondestructive testing tensile...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170003
EISBN: 978-1-62708-297-6
.... Magnetically hard materials for use as permanent magnets are also ferromagnetic materials, but are those that are capable by themselves of producing and maintaining relatively high magnetic induction without the aid of external magnetic fields. Permanent magnet materials are based on the cooperation of atomic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... and their alloys. Micrographs provide a permanent record of the structure of a material and are published extensively in all types of documents. When used in conjunction with a microhardness test, a micrograph can be useful in relating microstructure to mechanical properties. Next to hardness testing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240547
EISBN: 978-1-62708-251-8
..., cemented carbide tools, magnetic materials, and low-expansion alloys. Due to their excellent wear resistance, elevated-temperature hardness, and corrosion resistance, cobalt alloys are commercially used in gas turbine engines, earthmoving equipment, and as bearing materials. Cobalt alloys are often used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170573
EISBN: 978-1-62708-297-6
..., swaging dies, mandrels, hot-work rolls, etc. Also used as a pelletizer knife material in the plastics industry. Magnetic CS-40 High hardness with corrosion resistance of 400-series stainless steels. Also available as thermal spray powder. Ideally suited for applications such as mechanical seal rings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6
... Abstract This chapter discusses the selection, use, and integration of methods to control process variables in induction heating, including control of workpiece and processing temperature and materials handling systems. The discussion of temperature control includes a review of proportional...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440159
EISBN: 978-1-62708-262-4
... operation. Tempering prevents cracking by relieving some of the stress set up in hardening and imparts some degree of toughness to the hard case. Any electrically conducting material can be heated by electromagnetic induction. As alternating current flows through the inductor, or work coil (which does...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720321
EISBN: 978-1-62708-305-8
... be used for detecting flaws and for detecting differences in composition, hardness, or structure. With appropriate instrumentation, both functions can be accomplished simultaneously. Magnetic permeability systems usually employ a solenoid (primary coil), which is excited by the standard line frequency...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... by 6.4 mm or 1.25 by 0.50 by 0.25 in.), this method of measuring linear dimensions is infrequently used. Porous materials exhibit a wider variation in hardness testing than their wrought counterparts. The entrance of the indenter into pores or groups of pores generally causes this effect...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050317
EISBN: 978-1-62708-311-9
... Abstract This appendix provides practical information on induction coils and how they are made. It discusses soldering methods, preferred materials, design challenges, and best practices and procedures. It also discusses the design, construction, and application of magnetic flux concentrators...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... dimensional inspection eddy current inspection hardness testing internal discontinuities leak testing liquid penetrant inspection magnetic particle inspection radiographic inspection surface quality ultrasonic inspection INSPECTION PROCEDURES FOR CASTINGS are established at the foundry to ensure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... of hold-back bar assembly All of the parts were subjected to a magnetic particle inspection. In the strain bar, two cracks were found approximately 180° apart in the retainer ring groove location shown in Fig. 3 . The crack lengths were 22 and 25 mm (0.85 and 0.99 in.). No cracks were detected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130417
EISBN: 978-1-62708-284-6
... strength of machine components and reduce the danger of crack occurrence and growth on the surface of components. In thermal hardening, the surfaces of suitable materials, usually plain carbon, low-alloy steels, or cast irons, are austenitized and then quenched to produce a hard martensitic case...