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eutectoid carbon content

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Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006228
EISBN: 978-1-62708-163-4
... temperature and effective carbon content. The partitioning effect of substitutional alloying elements, such as chromium, manganese, and silicon, in pearlitic steel is also illustrated. alloying elements chromium eutectoid transformation hypereutectoid structure hypoeutectoid structure Iron-carbon...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003734
EISBN: 978-1-62708-177-1
... of a pearlite nodule and the effect of various substitutional alloy elements on the eutectoid transformation temperature and effective carbon content, respectively. Peritectic and peritectoid phase equilibria are very common in several binary systems. The article reviews structures from peritectoid reactions...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
...%, and the amount in the 0.6% C alloy is 75%. Fig. 10 Examples of pearlite formation in slowly cooled iron-carbon alloys as a function of carbon content. Etched with 4% picral. 500× In these alloys, the ferrite forms prior to the eutectoid reaction (which produces the pearlite) and is termed...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006300
EISBN: 978-1-62708-179-5
...-phase field show a temperature that increases with the carbon content. In relation with the eutectoid transformation in cast irons, it has been proposed to characterize the lower temperature limit of this metastable three-phase field by extrapolating the austenite-ferrite equilibrium line as illustrated...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005819
EISBN: 978-1-62708-165-8
.... The bct structure also occupies a larger atomic volume than ferrite and austenite, as summarized in Table 1 for different microstructural components as a function of carbon content. The density of martensite thus is lower than ferrite (and also austenite, which is denser than ferrite). The resulting...
Image
Published: 01 August 2013
Fig. 36 Effect of percentage of substitutional alloying on (a) temperature and (b) carbon content of the eutectoid transformation point. Source: Ref 69 More
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005859
EISBN: 978-1-62708-167-2
... important to heat treating are identified in Fig. 2 and include the single-phase field for austenite and three two-phase fields: Austenite and ferrite for carbon contents below the eutectoid composition of nominally 0.8 wt% C Austenite and iron-carbide for compositions greater than nominally 0.8...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006334
EISBN: 978-1-62708-179-5
... and explains the evaluation of carbon-silicon contents, graphite shape, graphite nucleation, and contraction-expansion balance. It illustrates the use of an immersion steel sampling device for compacted graphite iron production and provides information on the ferrite-pearlite ratio in ductile iron...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001008
EISBN: 978-1-62708-161-0
... that contains close to the eutectoid carbon content, 0.77 wt%C. In this scanning electron micrograph the cementite lamellae appear light and ferrite appears recessed because it has etched more deeply than the cementite. Fig. 3 Scanning electron micrograph showing pearlite in a rail steel eutectoid...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003723
EISBN: 978-1-62708-177-1
.... This distinctive morphology is a type of eutectoid structure (as briefly described in the section “The Iron-Carbon Eutectoid” in this article and in the separate article “Invariant Transformation Structures” in this Volume). The key point is that equilibrium phase diagrams are important in identifying phase...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005786
EISBN: 978-1-62708-165-8
... such as tempering or recrystallization can occur during heating of steels that are martensitic or cold worked before austenitizing. Alloy content of the steel can also influence austenitizing response, because carbide-forming elements will delay the diffusion of solute carbon in rapid heating conditions...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006253
EISBN: 978-1-62708-169-6
... isomorphous Beta eutectoid Aluminum Vanadium Copper Gallium Niobium Silver Germanium Tantalum Gold Lanthanum Molybdenum Indium Cerium Rhenium Lead Oxygen Tungsten Bismuth Nitrogen Chromium Carbon Neutral Manganese Iron Zirconium Cobalt Hafnium...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005798
EISBN: 978-1-62708-165-8
... indicates eutectoid carbon content. The ratio of pearlite to free ferrite for hypoeutectoid steels or the ratio of pearlite to proeutectoid carbide for hypereutectoid steels can be used to estimate carbon content. Austenite Carburization may cause some steels to retain excessive amounts of austenite...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003106
EISBN: 978-1-62708-199-3
... change from single values in the Fe-Fe 3 C system to temperature ranges in the Fe-Fe 3 C-Si system; the eutectic and eutectoid points shift to lower carbon contents. Fig. 2 Section through the Fe-Fe 3 C-Si ternary equilibrium diagram at 2% Si Figure 2 represents the metastable equilibrium...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003090
EISBN: 978-1-62708-199-3
...(a) ), very little carbon (0.022% C) can dissolve in ferrite (αFe), even at the eutectoid temperature of 727 °C (1330 °F). (The iron-carbon phase diagram indicates the phase regions that exist over a wide carbon and temperature range. The diagram represents equilibrium conditions. Figure 6(b) shows...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006295
EISBN: 978-1-62708-179-5
... contents of the eutectic and eutectoid decrease (% C max decreases), while the eutectic and eutectoid temperatures increase. The decrease in the carbon content of the eutectic is seen in Fig. 12 , which shows the liquidus projection in the iron-rich corner of the stable Fe-C-Si system ( Ref 12 ). Note...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002461
EISBN: 978-1-62708-194-8
..., such as in homogenization. According to the iron-carbon phase diagram ( Fig. 7(a) ), very little carbon (0.022% C) can dissolve in ferrite (αFe), even at the eutectoid temperature of 727 °C (1330 °F). (The iron-carbon phase diagram indicates the phase regions that exist over a wide carbon and temperature range...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005190
EISBN: 978-1-62708-187-0
...). The equilibrium diagrams in Fig. 14 show that as the silicon content in the Fe-C-Si system increases, the carbon contents of the eutectic and eutectoid decrease (%C max decreases), while the eutectic and eutectoid temperatures increase ( Ref 26 ). The activity coefficient, γ 2 , of component 2, dissolved...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005903
EISBN: 978-1-62708-167-2
... Abstract Interplays of metallurgical factors, such as dissolved oxygen, carbon, and silicon content, that control the molten metal from melting to pouring, have a decisive influence on the quality of the castings. This article focuses on the magnesium treatment and desulfurization carried out...
Book Chapter

By J.Y. Shi
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005812
EISBN: 978-1-62708-165-8
... first, then the carbide formed by the nucleus of undissolved carbides and impurity elements after the reheated carburizing. Further improvement was made by Japanese investigators ( Ref 11 , 12 ). The carburizing was conducted to make the surface carbon content higher than eutectoid composition...