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hysteresis alloys

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003154
EISBN: 978-1-62708-199-3
..., such as hysteresis alloys used in motors. It primarily focuses on the stability of magnetic fields that influences reversible and irreversible losses in magnetization with time, and the choice of magnet material, component shape and magnetic circuit arrangement. Selected References Selected References...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001109
EISBN: 978-1-62708-162-7
... Abstract Superconductivity has been found in a wide range of materials, including pure metals, alloys, compounds, oxides, and organic materials. Providing information on the basic principles, this article discusses the theoretical background, types of superconductors, and critical parameters...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001094
EISBN: 978-1-62708-162-7
... are normally used in a single magnetic state. This implies insensitivity to temperature effects, mechanical shock, and demagnetizing fields. This article does not consider magnetic memory or recording materials in which the magnetic state is altered during use. It does include, however, hysteresis alloys 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
... at a large value of H is smaller for mechanically harder specimens than for softer specimens. For one alloy, AISI 410 stainless steel, the hysteresis loop intersects the B = 0 axis at larger values of H for the harder specimen than for the softer specimen; that is, the coercive force is greater...
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
... by tempering at different temperatures. The grain size (ASTM No. 7) was the same for all four specimens used in the tests. Other data show that grain size has little effect on hysteretic behavior for the classes of alloys studied. Fig. 6 Effect of mechanical hardness on hysteresis loop data. (a) AISI...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003160
EISBN: 978-1-62708-199-3
... Transformation temperatures, °C (°F) <120 (250) <200 (390) Recoverable strain, % 4 4 Hysteresis, Δ°C (Δ°F) 15–25 (30–45) 15–20 (30–35) (a) The Young's modulus of shape memory alloys becomes difficult to define between the M s and the A s transformation temperatures...
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
..., where the heated metal or alloy retains its magnetic properties during the entire heating cycle or its majority (e.g., induction tempering, subcritical annealing, stress relieving, heating prior to galvanizing and coating of ferrous strips and wires, etc.), the heat generation due to magnetic hysteresis...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
... = 1 T (10 kG). Fig. 3 Effect of alloying elements on room-temperature saturation induction of iron Fig. 2 Effect of alloying elements on electrical resistivity of iron Fig. 4 Relationship between grain size and hysteresis loss for high-purity iron at B = 1 T (10 kG...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002354
EISBN: 978-1-62708-193-1
... Table 1 Effect of microstructural modifications on the fatigue resistance of alloys Modification to microstructure Shearable precipitates Precipitate- free zones Overaging Improves No effect Dispersoids Improves No effect Unrecrystallized structures Improves Improves...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002469
EISBN: 978-1-62708-194-8
... the monotonic and the cyclic stress-strain diagrams for six different engineering alloys are presented. When the cyclic curve is above (below) the monotonic curve, cyclic hardening (softening) is achieved. For many of the alloys, the cyclic curve is equal or above the monotonic curve. The hysteresis loops...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001100
EISBN: 978-1-62708-162-7
... having a shape memory effect Alloys Composition Transformation-temperature range Transformation hysteresis °C °F Δ°C Δ°F Ag-Cd 44/49 at.% Cd −190 to −50 −310 to −60 ≈15 ≈25 Au-Cd 46.5/50 at.%Cd 30 to 100 85 to 212 ≈15 ≈25 Cu-Al-Ni 12/14.5 wt% Al 3/4.5 wt% Ni −140...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002364
EISBN: 978-1-62708-193-1
... Percent reduction in area, % RA Zero to 90% True fracture strength, σ f , ksi 0.5 to 5 × 10 2 True fracture ductility, ε f Zero to 2 Strain-hardening exponent, n Zero to 0.5 Table 2 Monotonic and cyclic stress-strain properties of selected steels Alloy Condition...
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
..., and hysteresis loss are affected by impurities within the alloy, cold deformation such as sizing, and heat treatment. The most harmful impurities include carbon, nitrogen, oxygen, and sulfur. All PM parts contain a lubricant to facilitate compaction, which if not properly removed during the presintering stage...
Book Chapter

Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003736
EISBN: 978-1-62708-177-1
... alloys), the martensitic surface relief formed upon cooling can be removed by heating to temperatures above the start temperature of the parent phase. The transformation hysteresis is thus defined by the difference between the forward and reverse transformation temperatures. Reversibility...
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
... . In very high permeability alloys, λ 1 approaches zero. Conversely, applying external stress to ferromagnetic material causes the magnetic hysteresis loop to change. The ferromagnetic and electrical properties of materials can be divided into two general categories: those that are structure sensitive...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006324
EISBN: 978-1-62708-179-5
... graphite will produce higher permeability and lower hysteresis loss when compared to lamellar graphite irons (compare alloys 3 and 7 in Table 19 ). According to Decrop ( Ref 77 ), the transition from coarse type A graphite to fine type D graphite, accompanied by the total disappearance of pearlite...
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
... as well as the content of alloying elements and prior microstructure determine whether the workpiece is capable of satisfying the aforementioned requirements. Typical specifications include requirements for the quantity of pearlite or martensite in the microstructure prior to induction heat treatment...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003314
EISBN: 978-1-62708-176-4
... testing specimen machining surface preparation gripping system THE FATIGUE CRACK INITIATION RESISTANCE of an alloy is determined by conducting a series of tests over a range of values of stress amplitude or strain range. The observed number of cycles to failure is plotted against the stress...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005846
EISBN: 978-1-62708-167-2
... are proportional to the product of the area of the hysteresis loop and the frequency. For good soft-magnetic materials, the hysteresis loop should be as narrow as possible. Minimizing hysteresis losses is accomplished through alloying elements and by stress relieving the material ( Ref 3 ). The cooling method...
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
... with Surface Magnetic Barkhausen Noise in Electric Motor Steel , J. Nondestr. Eval ., Vol 33 , Dec 2014 , p 663 – 669 10.1007/s10921-014-0260-x 50. Durin G. and Zapperi S. , The Barkhausen Effect , Sci. Hysteresis , Vol 2 , April 2006 , p 181 – 267 10.1016/B978-012480874-4...