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phase constituents

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190001
EISBN: 978-1-62708-296-9
...Abstract Abstract This chapter serves as a study and guide on the main phase constituents of cast aluminum-silicon alloys, alpha-Al solid solution and Si crystals. The first section focuses on the structure of Al-Si castings in the as-cast state, covering the morphology of the alpha-Al solid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560005
EISBN: 978-1-62708-291-4
... Constituents Two-Phase Constituents Glossary Howe suggested the terms ferrite , cementite , pearlyte (pearlite), hardenite , and sorbite . Osmond added austenite , martensite , sorbite (different from Howe’s), and troostite , and through common usage the terminology that now prevails...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190147
EISBN: 978-1-62708-296-9
... of microstructures comparing the effects of selective etching procedures on various phase constituents in cast aluminum-silicon alloys. The compilation of images demonstrates the use of two types of reagents: those that reveal discontinuities in crystal orientation and grain boundaries, and those that reveal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190089
EISBN: 978-1-62708-296-9
... and metal molds, before and after modification. The chapter also provides composition data and includes callouts identifying various phase constituents in the interdendritic eutectic microstructure. cast aluminum-silicon alloys microstructure phase constituents MICROSTRUCTURE IMAGES...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
...Abstract Abstract This chapter describes the phases and constituents present in iron-carbon steels in near-equilibrium conditions. It explains how to use phase diagrams to predict and manage the development of ferrite, austenite, cementite, and pearlite through controlled cooling. It discusses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170351
EISBN: 978-1-62708-297-6
... classification system by which they are defined, and the applications for which they are suited. It then explains how primary alloying elements, second-phase constituents, and impurities affect yield strength, phase formation, and grain size and how they induce structural changes that help refine certain alloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190035
EISBN: 978-1-62708-296-9
...Abstract Abstract Structurally differentiated intermetallic phases are important constituents in the microstructure of aluminum alloys, with the potential to influence properties, behaviors, and processing characteristics. These phases can form in aluminum-silicon alloys with transition metals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400023
EISBN: 978-1-62708-258-7
... of ferrous physical metallurgy. Several examples of the morphological features of microstructural constituents in steels are also presented. cast iron heat treatment iron-carbon phase diagram microstructure solidification steel EVERY METALLOGRAPHER should know and understand how the various...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190vii
EISBN: 978-1-62708-296-9
... categories: (a) visual, concerning morphology of phase constituents (i.e., shape and dispersion), and (b) physical, concerning properties of phase constituents. The general material parameters cannot be directly used to estimate the conformability of cast parts with the technical conditions specific...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870025
EISBN: 978-1-62708-299-0
... constituents have been measured and are shown in Table 6 . Solution potentials of some second-phase constituents in aluminum alloys Table 6 Solution potentials of some second-phase constituents in aluminum alloys Phase Potential (a) , V Si −0.26 Al 3 Ni −0.52 Al 3 Fe −0.56 Al 2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090241
EISBN: 978-1-62708-266-2
.... These phases are generally intermetallic compounds of binary, ternary, or higher-order compositions, although some elements in excess of their solid solubility are present as elemental phases. Electrode potentials of some of the simpler second-phase constituents have been measured and are presented in Table...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230199
EISBN: 978-1-62708-298-3
... for identification of inclusions or second phases. It can be photographed for record or report purposes, in black and white or in color. The hard constituents are readily chipped and pulled out of the matrix and may seriously scratch the specimen. On the other hand, soft constituents are easily gouged out...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220025
EISBN: 978-1-62708-259-4
...-4615-1233-2 10. “ Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count ,” E562-02, ASTM , 2002 11. “ Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis ,” E1245-03, ASTM , 2003 12...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310001
EISBN: 978-1-62708-326-3
... of an alloying element exceeds the solid-solubility (solvus) limit, the alloying element produces second-phase microstructural constituents that may consist of either the pure alloying ingredient or an intermetallic-compound phase. There are numerous exceptions to these rules. In general, an unfavorable size...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220193
EISBN: 978-1-62708-259-4
... Grain Size Measurement In Chapter 7, “Equilibrium Phases and Constituents in the Fe-C System,” in this book, the body centered cubic (BCC) phase of iron, ferrite, is presented. Many images of low carbon steels in which ferrite appears with the shape of equiaxed grains are presented. Images...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310029
EISBN: 978-1-62708-326-3
...Atomic volumes of selected microstructural constituents of ferrous alloys Table 1 Atomic volumes of selected microstructural constituents of ferrous alloys Phase Apparent atomic volume, Å 3 Ferrite 11.789 Cementite 12.769 Ferrite + carbides 11.786 + 0.163 C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420303
EISBN: 978-1-62708-310-2
... structure that forms during athermal (nonisothermal) conditions. Unlike isothermal decomposition of phase constituents that approach equilibrium conditions by diffusion-controlled mechanisms, martensite does not appear on equilibrium phase diagrams. The mechanism of martensitic transformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060013
EISBN: 978-1-62708-261-7
... that more easily accommodates alloying elements in solid form. For example, the difference in atomic size and weights of iron and carbon is part of the reason for formation of additional new phases and/or constituents (i.e., new crystal structures) in the iron-rich side of the well-known iron-carbon phase...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
..., martensite is a metastable structure that forms during rapid cooling of austenite. Unlike the isothermal decomposition of phase constituents by diffusion, martensite is not a phase associated with thermal equilibrium. Thus, it does not appear on the iron-carbon equilibrium phase diagram. In contrast...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... Bainitic ferrite α′m Dislocated cubic martensite II O Minor secondary phases γ r Retained austenite MA Martensite-austenite constituent α′M Martensite ATM Autotempered martensite B BII, B2: upper bainite Bu: upper bainite B L : lower bainite P′ Degenerated pearlite...