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ferritic microstructure

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... This chapter describes the ferritic microstructures that form in carbon steels under continuous cooling conditions. It begins with a review of the Dubé classification system for crystal morphologies. It then explains how cooling-rate-induced changes involving carbon atom diffusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... This chapter discusses the stress-strain response of ferritic microstructures and its influence on tensile deformation, strain hardening, and ductile fracture of carbon steels. It describes the ductile-to-brittle transition that occurs in bcc ferrite, the effects of aging and grain 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
..., namely martensite and bainite. It also discusses the formation of austenite, the control and measurement of austenitic grain size, the characteristics of ferritic microstructures, and the methods used to classify ferrite morphology. austenite austenite decomposition austenitic grain size bainite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410277
EISBN: 978-1-62708-265-5
.... The chapter concludes with a brief discussion on the mechanical properties of ferrite/pearlite microstructures in medium-carbon steels. annealing ferrite normalizing pearlite spherical carbides spheroidizing THIS CHAPTER DESCRIBES heat treatments that are designed to produce uniformity...
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 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410039
EISBN: 978-1-62708-265-5
... The microstructure of carbon steel is largely determined by the transformation of austenite to ferrite, cementite, and pearlite. This chapter focuses on the microstructures produced by diffusion-controlled transformations that occur at relatively low cooling rates. It describes the conditions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
... features along with cooling conditions and sample preparation procedures. austenite cementite ferrite hyper-eutectoid steel hypo-eutectoid steel microstructure pearlite This chapter introduces the basic concepts of the phases and constituents present in the simpler steels in conditions...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410099
EISBN: 978-1-62708-265-5
... Bainite Transformation Start Temperatures Bainite versus Ferritic Microstructures Upper Bainite Lower Bainite Bainite Formation Mechanisms Mechanical Behavior of Ferrite-Carbide Bainites References References 6.1 Davenport E.S. and Bain E.C. , Transformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220445
EISBN: 978-1-62708-259-4
... the critical region (750 °C, or 1380 °F, for 15 min) followed by quenching. Two-phase microstructure. Ferrite (light) surrounded by martensite in the areas that have transformed to austenite during the treatment inside the critical region. Etchant: potassium metabisulfite. Courtesy of C. S. Viana, EEIMVR-UFF...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410233
EISBN: 978-1-62708-265-5
... transformation-induced plasticity steel twinning-induced plasticity steel General Considerations Low-Carbon Steel—Hot-Rolled Ferrite-Pearlite Microstructures Low-Carbon Steel—Processing by Cold Rolling and Annealing Processing of Cold-Rolled and Annealed Sheet Steels for High Formability...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240153
EISBN: 978-1-62708-251-8
...Abstract Abstract This chapter examines the isothermal phase transformations of the iron-carbide system. The discussion includes the formation of ferritic, eutectoid, hypoeutectoid, hypereutectoid, bainitic, and martensitic microstructures as well as their properties, composition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.9781627082655
EISBN: 978-1-62708-265-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820099
EISBN: 978-1-62708-339-3
... based on the Fe-Cr-Ni system. These materials typically comprise approximately equal amounts of body-centered cubic (bcc) ferrite and face-centered cubic (fcc) austenite in their microstructures and are characterized by their low carbon content (<0.03 wt%) and additions of molybdenum, nitrogen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410293
EISBN: 978-1-62708-265-5
... at moderate strength levels. This class of steels uses microalloying to develop extra strength in ferrite/pearlite microstructures produced directly on cooling from forging temperatures. Microadditions of vanadium and niobium, below 0.20%, are less expensive than substantial alloying additions of chromium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... with microstructures of polycrystalline ferrite ( Ref 18.7 ). Temperatures must be sufficiently high and strain rates sufficiently low in order to permit carbon atom diffusion to dislocations. When dislocation motion is halted by carbon atom pinning, plastic deformation ceases and is resumed only by the generation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410133
EISBN: 978-1-62708-265-5
..., Processing, and Structure , Krauss G. , Ed., American Society for Metals , 1984 , p 245 – 277 8.44 Aloi N.E. Jr. , “ Hot Deformation, Microstructure, and Property Analysis of Ferritic/Pearlitic and Bainitic Microalloyed Forging Steels ,” M.S. thesis, Colorado School of Mines, Golden...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420303
EISBN: 978-1-62708-310-2
... 15.2 Fig. 15.28 Effect of steel carbon content on the transition temperature between upper and lower bainite. Source: Ref 15.22 as published in Ref 15.19 Fig. 15.29 Schematic illustrations of various ferrite (white)-cementite (black) microstructures defined as bainite according...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220551
EISBN: 978-1-62708-259-4
... with permission from Springer Science and Business Media. Fig. 16.21 AISI 304 steel, as-cast ingot. Delta ferrite in an austenitic matrix. (a) Etchant: oxalic acid. (b) Etchant: glyceregia. Courtesy of Villares Metals S.A., Sumaré, SP, Brazil. Fig. 16.22 Microstructural evolution of a weld...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560125
EISBN: 978-1-62708-291-4
... Fig. 6.1 (Part 1) Effect of carbon content on annealed steels. See also Fig. 6.2 to 6.4 . (a) and (b) 0.15% C (0.17C-0.06Si-0.41 Mn, wt%). Austenitized at 925 °C, cooled at 100 °C/h. 115 HV. 80 vol% ferrite. (a) Picral. 100×. (b) Picral. 500×. (c) and (d) 0.25% C (0.23C-0.06Si...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320157
EISBN: 978-1-62708-332-4
... and the alloying. Figure 8.3 is a summary of the heat-treat cycles and the resultant microstructures for unalloyed and alloyed irons: Unalloyed iron, air quench → Ferritic microstructure Unalloyed iron, liquid quench → Pearlitic microstructure Alloyed iron, air quench → Pearlitic microstructure...