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acicular ferrite

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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
... ferrite, Widmanstatten ferrite, quasi-polygonal or massive ferrite, acicular ferrite, and granular ferrite. acicular ferrite cooling rate Dube classification system ferrite granular ferrite microstructure polygonal ferrite quasi-polygonal ferrite Widmanstatten ferrite THIS CHAPTER...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220475
EISBN: 978-1-62708-259-4
...% and picral 4%. Courtesy of National Institute of Standards and Technology. Source: Ref 4 Fig. 14.30 Higher magnification images of the regions of the welded joint presented in Fig. 14.29 . (a) Weld-deposited metal. Ferrite veins and acicular ferrite with carbides. (b) Coarse-grained region...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220193
EISBN: 978-1-62708-259-4
.../matertrans1989.32.737 40. Gourgues A.F. , Flower H.M. , and Lindley T.C. , Electron Backscattering Diffraction Study of Acicular Ferrite, Bainite and Martensite Steel Microstructures , Mat. Sci. Technol. , Vol 16 , January 2000 , p 26 – 40 10.1179/026708300773002636 41. Girault...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410293
EISBN: 978-1-62708-265-5
... acicular ferrite was noted in low-carbon specimens. Zajac ( Ref 14.21 ) has related VN precipitation on MnS particles to enhanced nucleation of acicular ferrite in microalloyed low-carbon steels. Fig. 14.12 Yield strength of ferrite/pearlite microstructures as a function of steel carbon content...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
...) Inner-edge microstructure (acicular ferrite and fine carbides) at weld region indicating merging of pit formed on surface with the weld porosity. Fig. 6.158 (a) Close-up view of outer surface at failure location showing leakage from the weld joint. (b) Inner surface view at weld location...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220273
EISBN: 978-1-62708-259-4
... transformed to austenite, but pro-eutectoid allotriomorphic and acicular ferrite regions did not. The region where austenite did form has transformed to fine ferrite grains and small pearlite colonies. Etchant: nital. Fig. 10.42 Determination of the critical diameter according to Grossmann. (a) Bars...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400023
EISBN: 978-1-62708-258-7
.... 4% picral etch. 500× Fig. 2.16 Acicular form of ferrite nucleated at prior austenite grain boundaries in an AISI/SAE 1060 steel. Matrix is martensite. 2% nital etch. 500× Fig. 2.17 Cementite (arrows) at ferrite grain boundaries in a batch-annealed 0.04% C sheet steel. Marshall’s...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560005
EISBN: 978-1-62708-291-4
..., lower bainitic ferrite, bainitic ferrite , and acicular bainitic ferrite are terms relating to the nature of the transformation by which the ferrite is formed. Additionally, the term massive ferrite is used in the same way—but not without ambiguity, because massive may refer to “a mass … having...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170193
EISBN: 978-1-62708-297-6
... steels , which may include carbon-manganese steels but which may also have small additions of other alloying elements to enhance strength, toughness, formability, and weldability Acicular ferrite (low-carbon bainite) steels , which are low-carbon (less than 0.05% C) steels with an excellent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220519
EISBN: 978-1-62708-259-4
... Tubarão, ES, Brazil. Fig. 15.20 AISI 1060 steel plate, controlled rolled. (a) One quarter thickness position; (b) mid-thickness. Pro-eutectoid ferrite and pearlite. Some acicular ferrite. Etchant: nital 2%. Courtesy of ArcelorMittal Tubarão, ES, Brazil. Fig. 15.21 Steel containing C...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060247
EISBN: 978-1-62708-261-7
... Fig. 10.25 Effect of tensile strength and matrix structure on endurance ratio for ductile iron Fig. 10.21 Austempering process for cast irons. Source: Ref 10.2 Fig. 10.22 Microstructure of austempered ductile iron (Fe-3.6C-2.5Si-0.052Mg-0.7Cu). AF, acicular ferrite...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170062
EISBN: 978-1-62708-297-6
.... Quenched and tempered matrix microstructures are predominantly martensitic. Austempering, to generate very high strength with some ductility and toughness, and improved wear resistance. Austempered matrix microstructures are a combination of acicular (bainitic) ferrite and austenite ( Fig. 2...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310029
EISBN: 978-1-62708-326-3
..., and the cementite is present as very fine particles within the ferrite plates ( Fig. 18b and 18d ). Figure 19(b) shows lower bainite that has formed in a 4150 steel. The bainite plates are at angles with respect to each other, giving an acicular or needlelike appearance to the microstructure rather than...
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 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
... structure. Ferrite, acicular ferrite, bainite, and martensite. L = longitudinal, T = transverse, S = short transverse. Etchant: nital 2%. Reproduced with permission from Springer Science and Business Media. Source: Ref 27 Fig. 11.49 Cross section of the plane identified as LS in the HY-100 steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... fisheyes appear as bright spots in a gray ductile matrix. Fig. 10 SEM image of center of fisheye showing intergranular fracture Fig. 11 Ferrite vein crack occurring in the prior-austenite grain boundaries of weld metal deposited on A709-grade 50W Fig. 16 Cross section of weld...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310331
EISBN: 978-1-62708-326-3
...Recommended practices for annealing gray iron castings Table 3 Recommended practices for annealing gray iron castings Type of anneal Purpose Temperature (a) Time Cooling rate (b) °C °F Low-temperature (ferritizing) For conversion of pearlite to ferrite in unalloyed irons...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.9781627083263
EISBN: 978-1-62708-326-3