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cementite

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005326
EISBN: 978-1-62708-187-0
... … Free of primary graphite Pipe fittings and valve parts for pressure service Pearlitic and martensitic ASTM A 220 40010 Temper carbon in necessary matrix without primary cementite or graphite General engineering service at normal and elevated temperatures. Dimensional tolerance range for...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003090
EISBN: 978-1-62708-199-3
... steels and cast irons, the microstructural constituents have the names ferrite, pearlite, bainite, martensite, cementite, and austenite. The article presents four examples that have very different microstructures: the structural steel has a ferrite plus pearlite microstructure; the rail steel has a fully...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
... complex mixtures of constituents (single or combination of two phases) that are encountered in iron-base alloys and the complex structure that is observed in these microstructures. The single-phase constituents discussed in the article include austenite, ferrite, delta ferrite, cementite, various alloy...
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
... decomposition of solid solution into two other solid phases. The iron-carbide phase diagram is shown in Fig. 2 The composition only extends to 6.70% C; at this composition the intermediate compound iron carbide, or cementite (Fe 3 C), is formed, represented by the vertical line on the right-hand side of the...
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006221
EISBN: 978-1-62708-163-4
... cementite (Fe 3 C) and graphite (as the equilibrium form of carbon). Although cementite is strictly a metastable phase that eventually decomposes into iron and graphite, cementite is sufficiently stable over the time scales of most engineering applications. When small amounts of another element are...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0005586
EISBN: 978-1-62708-170-2
... 3 temperature at which transformation of ferrite to austenite is completed during heating AC cm in hypereutectoid steel, temperature at which cementite completes solution in austenite A e surface area Ae cm , Ae 1 , Ae 3 equilibrium transformation temperatures in steel...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.9781627081733
EISBN: 978-1-62708-173-3
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003195
EISBN: 978-1-62708-199-3
... range of stability of austenite. Its solubility is much higher in austenite (a maximum of 2.11 wt% in equilibrium with cementite at 1148 °C, or 3000 °F) than in ferrite (a maximum of 0.0218 wt% in equilibrium with cementite at 727 °C, or 1340 °F). The solubility of carbon in ferrite and austenite is a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003106
EISBN: 978-1-62708-199-3
... contents. Fig. 2 Section through the Fe-Fe 3 C-Si ternary equilibrium diagram at 2% Si Figure 2 represents the metastable equilibrium between iron and iron carbide (cementite), a metastable system. The silicon that is present remains in solid solution in the iron, in both ferrite and...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.9781627081610
EISBN: 978-1-62708-161-0
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005936
EISBN: 978-1-62708-166-5
... as well as transformation strains for transformation from ferrite/cementite to austenite followed by the martensitic transformation The consideration of thermal expansion/contraction and transformation strains in numerical modeling of the stress and distortion development requires the use of a...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005213
EISBN: 978-1-62708-187-0
... strengthens the theory that sulfur plays an important role in the formation of substrates for the graphite. The iron carbide (cementite) consists of an orthorhombic unit cell with 12 iron atoms and 4 carbon atoms per cell and therefore has a carbon content of 6.7 wt%. Its density is 7.6 g/cm 3 . Very...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005967
EISBN: 978-1-62708-166-5
... hardness, the steel is cooled rapidly to avoid the formation of pearlite, a relatively soft transformation product consisting of a fine lamellar structure of ferrite ( Fig. 2 ) and cementite (Fe 3 C), and maximize the formation of martensite, a relatively hard transformation product. Common...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005226
EISBN: 978-1-62708-187-0
... form (austenite and cementite) with increasing solidification rate using information from the stable and the metastable phase diagrams combined with a eutectic growth analysis ( Ref 7 ). The eutectic temperature and composition for white cast iron are well-defined thermodynamic quantities, just as they...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.9781627081627
EISBN: 978-1-62708-162-7
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003085
EISBN: 978-1-62708-199-3
... metastable structures, but some (such as Fe 3 C, or “cementite”) are produced at moderately slow cooling rates. With extremely rapid freezing, even thermodynamically unstable structures (such as amorphous metallic “glasses”) can be produced. A physical system consists of a substance (or a group of...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006682
EISBN: 978-1-62708-213-6
... grain size and inclusion ratings are fraught with problems. In this article, the focus is placed on the more commonly used measurements made by metallographers, particularly in relation to production manufacturing work and failure analysis studies. Measurement of the interlamellar spacing of cementite...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005922
EISBN: 978-1-62708-166-5
... fine lamellar cementite ( Fig. 5b ). Fig. 5 Microstructure of 5.0 mm (0.2 in.) patented high-carbon steel wire in a lead bath at 505 °C (940 °F) using scanning electron microscopy. (a) Very fine pearlite. (b) Fine lamellar cementite ...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005947
EISBN: 978-1-62708-166-5
... the curves for austenite, ferrite + cementite, and martensite were chosen. For a given carbon content, austenite requires the smallest volume per mass unit; that is, austenite has the highest density. Phase mixtures of ferrite + cementite as well as martensite require more volume. With increasing...