1-20 of 24 Search Results for

polygonal ferrite

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... and the associated rearrangement of iron atoms produce the wide variety of morphologies and microstructures observed in ferrite. The chapter also describes a classification system developed specifically for ferritic microstructures and uses it to compare common forms of ferrite, including polygonal or equiaxed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220475
EISBN: 978-1-62708-259-4
...). With a rate of 0.02 °C/s (0.04 °F/s) polygonal ferrite and bainite are formed. Etchant: nital 2%. Courtesy of B. Marini (CEA, France). Source: Ref 21 , 22 Fig. 14.20 20MnMoNi55 steel plate with 220 mm (9 in.) thickness austenitized at 900 °C (1650 °F) for 8.5 h, water quenched and tempered at 635...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220403
EISBN: 978-1-62708-259-4
... and coarse cementite in fragmented aligned pieces. Heat-treated at a 660 °C (1220 °F), hardness: 55 HRB. Etchant: nital 2%. Fig. 12.25 Annealed sheet of steel (C = 0.05%, Mn = 0.30%). Polygonal ferritic grains and coarse cementite in fragmented aligned pieces. Ferrite grain size = 11.0 ASTM...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
.... Polygonal (equiaxed) ferrite grains. Etchant: Klemm. Fig. 7.5 IF steel (C = 26 ppm, N = 30 ppm, Ti = 600 ppm) annealed. Polygonal (equiaxed) ferrite grains. In the center of the image, a small nonmetallic inclusion is present. Possibly TiN. Etchant: Klemm. Fig. 7.6 Polygonal ferrite...
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 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560005
EISBN: 978-1-62708-291-4
... ferrite, unchanged ferrite, recrystallized ferrite, carbide-free ferrite, clear ferrite, coherent ferrite , and supersaturated ferrite . Many additional terms have been proposed for descriptions of morphology and grain structure— equiaxed ferrite, polygonal ferrite, polygonized ferrite, fine-grain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560081
EISBN: 978-1-62708-291-4
... (wt%). (g) Rolled at 1200 °C, reduced 2×. Unetched. 250×. (h) Rolled at 1200 °C reduced 16×. Unetched. 250×. Fig. 5.16 (Part 2) Ferrite-pearlite banding. (a) As-rolled plate, longitudinal section. Picral. 100×. (b) 0.25% C, rolled plate (0.25C-0.34Si-1.75Mn-0.24Cr, wt%). As-rolled...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400023
EISBN: 978-1-62708-258-7
... dimensions are approximately equal in all directions (equal axes). It is also called polygonal ferrite, which implies that ferrite forms as an array of polygons. Ferrite can have many other morphological forms. Ferrite exists as a phase in the constituents pearlite and bainite, which is discussed later...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... was through-wall. Figure 18.10 presents an intergranular crack with extensive branching and what appears to be crack wall corrosion. The microstructure consisted of large amounts of polygonal ferrite, isolated cementite films at ferritic grain boundaries, and a small number of pearlite colonies...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220129
EISBN: 978-1-62708-259-4
...) of a steel containing 0.14% C. The discontinuity in volume change corresponds to the shrinkage during the peritectic reaction. Calculated. Source: Ref 11 , 12 Figures 8.22 and 8.23 present the evolution of the structure as the steel solidifies. The fast transformation of ferrite in austenite...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310127
EISBN: 978-1-62708-326-3
... above the transformation range, then cooled to and held at a temperature at which austenite transforms isothermally to a relatively soft ferrite-carbide aggregate. (a) The use of solution annealing and precipitation hardening is discussed in greater depth in Chapter 9, “Heat Treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060175
EISBN: 978-1-62708-261-7
... (a) Strength criteria, metal midsection °C °F °C °F SA-106 carbon steel 400–500 750–930 425 795 Ferritic alloy steels   0.5Cr-0.5Mo 550 1020 510 950   1.2Cr-0.5Mo 565 1050 560 1040   2.25Cr-1Mo 580 1075 595 1105   9Cr-1Mo 650 1200 650 1200 Austenitic stainless...
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
... or polygonal ferrite, but recent developments have added other major microstructural components. Nevertheless, the performance of low-carbon steels depends essentially on the deformation and fracture mechanisms of ferrite described in Chapter 11, “Deformation, Strengthening, and Fracture of Ferritic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
..., severity 1.5, fine series. Courtesy of ArcelorMittal Tubarão, ES, Brazil. Fig. 11.33 Polygonal, nondeformed, titanium nitride inclusions (or titanium carbonitride) and deformed delta ferrite in a martensitic stainless steel W. Nr. 1.4418 (X 4CrNiMo 16 5 1) hot worked. Etchant: NaOH. Courtesy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310161
EISBN: 978-1-62708-286-0
...Abstract Abstract This chapter discusses different thermal processes applicable to the various alloy groups of stainless steels, namely austenitic, ferritic, martensitic, precipitation hardening, and duplex stainless steels. The processes discussed include soaking, annealing, stress relieving...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410373
EISBN: 978-1-62708-265-5
... of as-quenched martensitic microstructures but lowers strength and hardness. This chapter describes the mechanical property and microstructural changes that develop during tempering. The most important structural changes involve the formation of various distributions of ferrite and carbides...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.9781627082587
EISBN: 978-1-62708-258-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.9781627082655
EISBN: 978-1-62708-265-5
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560185
EISBN: 978-1-62708-291-4
... Fig. 8.1 Austenitization of a high-carbon steel. Original structure: ferrite and spheroidized cementite. The dark-etching areas were austenitic prior to quenching. The mid-tone areas are cementite. The lightest areas are ferrite. (a) Unheated. Picral. 1500×. (b) Heated at 745 °C for 5 s...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.9781627082860
EISBN: 978-1-62708-286-0