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ferritic steel

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Journal Articles
AM&P Technical Articles (2012) 170 (10): 20–22.
Published: 01 October 2012
...J. Parker; K. Coleman; J. Siefert; J. Shingledecker Compared to traditional power plant materials, creep strength enhanced ferritic steels require new approaches to nondestructive examination and weld repair. The metallurgical complexity of these steels prompted EPRI to conduct research to define...
Journal Articles
AM&P Technical Articles (2013) 171 (11): 13–18.
Published: 01 November 2013
...Tom McGaughy; Fabian Orth This article identifies several factors that are not fully addressed in most fracture toughness test standards and explains how they may influence calculated values obtained from ferritic steels. Of particular consequence are test temperatures within the ductile-to-brittle...
Journal Articles
AM&P Technical Articles (2015) 173 (3): 24–27.
Published: 01 March 2015
... rate, hold time, creep strength, and creep ductility of the material. The traditional understanding of creep-fatigue interactions is based on studies of low alloy ferritic and austenitic steels. However, this understanding may not translate well to new advanced materials with significantly different...
Journal Articles
AM&P Technical Articles (2020) 178 (6): 25–28.
Published: 01 September 2020
... to yield antimicrobial properties any closer to Cu[11]. PRELIMINARY STUDIES As noted in the previous discussion, it is not enough to just add Cu to stainless steels and expect things to work as well as Cu. The authors have been experimenting with Cu-precipitation-strengthened ferritic steels for the past...
Journal Articles
AM&P Technical Articles (2020) 178 (5): 61–63.
Published: 01 July 2020
...- group)[4]. vanced nuclear reactor applications. ODS steels consist of uni- form dispersion of nanometer sized oxide clusters (typically of Y-Ti-O) in a fine-grained ferritic steel matrix which provides superior high temperature creep strength and irradiation dam- age resistance. Manufacturing ODS fuel...
Journal Articles
AM&P Technical Articles (2022) 180 (8): 27–31.
Published: 01 November 2022
... and lower yield point in AISI 1018 steel, (Fig. 5), and an average of 77.3 MPa for three tests. Takeda[9] says that solid solution strengthening by nitrogen and carbon had a negligibly small influence on the yield strength of ferritic iron. He states that the Cottrell atmosphere[1] is not supported by his...
Journal Articles
AM&P Technical Articles (2012) 170 (1): 19–23.
Published: 01 January 2012
...), a creep strength-enhanced ferritic steel (primarily for fossil generation applications) 0 50 45 40 Temperature, °C 50 100 150 200 815111 Y1620B Heat RR 814520 F316L/TP316L minimum 276 35 242 30 207 25 173 20 138 15 104 10 69 5 35 00 32 131 230 329 428 527 626 725 824 923 1022 Temperature, °F Fig. 3...
Journal Articles
AM&P Technical Articles (2017) 175 (1): 21–24.
Published: 01 January 2017
... of nanostructured bainite in terms of the transformation mechanism. Copyright © ASM International® 2017 2017 ASM International bainitic steel carbon supersaturation nanoscale ferrite phase transformation httpsdoi.org/10.31399/asm.amp.2017-01.p021 21 ADVANCED MATERIALS & PROCESSES | JANUARY 2017...
Journal Articles
AM&P Technical Articles (2015) 173 (2): 22–27.
Published: 01 February 2015
... the maxi- mum affected depth (MAD). In some cases, there is no free DECARBURIZATION BASICS ferrite at the surface. In research stud- Decarburization occurs when car- ies, this may be supplemented with a bon atoms at the steel surface interact Knoop hardness traverse to determine with the furnace atmosphere...
Journal Articles
AM&P Technical Articles (2020) 178 (2): 16–19.
Published: 01 February 2020
...Peter Kirbiš; Henrik Kaker; Tomaž Irgolič; Darja Feizpour This article describes a procedure for optimizing the annealed microstructure of a high Al KAB steel. The main focus is directed toward characterization of microstructural development during annealing of different phases in a nanostructured...
Journal Articles
AM&P Technical Articles (2012) 170 (8): 15–19.
Published: 01 August 2012
... with a standard four-step method for low-carbon steels. Examination of OD and ID through-thickness surfaces revealed shear marks, suggesting the ring was punched from sheet steel. Figure 7 shows the shear deformation at the ring ID. The microstructure was equiaxed ferrite with few visible carbides, suggesting...
Journal Articles
AM&P Technical Articles (2014) 172 (1): 17–20.
Published: 01 January 2014
... in the LBE melt. Ni, Fe, and Cr have solubility in LBE, but Ni has particularly high solubility. For this reason, Ni-based alloys may not be suitable for this application. Ferritic steels are being actively considered for LBE environments. It is desirable to have a small amount of dissolved oxygen in the LBE...
Journal Articles
AM&P Technical Articles (2020) 178 (2): 20–24.
Published: 01 February 2020
... welding produces superior weld joint quality, especially the configuration of weld toe, which has a positive effect on fatigue life. Copyright © ASM International® 2020 2020 ASM International impact toughness ultranarrow-gap laser welding weathering steel weld quality 2 0 httpsdoi.org...
Journal Articles
AM&P Technical Articles (2015) 173 (9): 32–33.
Published: 01 October 2015
... of semi-continuous delta ferrite stringers in a matrix of martensite. These stringers were found to be a major factor contributing to the pin failure. The Charpy V-notch impact resistance of the steel was far below the specified requirement. Semi-continuous delta ferrite stringers made the pin s impact...
Journal Articles
AM&P Technical Articles (2023) 181 (2): 51–53.
Published: 01 March 2023
...-austenitizingtemperature treatment (e.g., during hot forging), to a finer and more uniform structure. The microstructures in Fig. 2 illustrate the effect. The annealed microstructure consists of coarse primary ferrite grains that have formed on the boundaries of large austenite grains. When the steel...
Journal Articles
AM&P Technical Articles (2019) 177 (8): 63–67.
Published: 01 November 2019
... of thermal cycles is required to prevent grain growth. Robert Cryderman,* Advanced Steel Processing and Products Research Center, Colorado School of Mines, Golden Several tools and advanced techniques are available at the Advanced Steel Processing and Products Research Center (ASPPRC), Colorado School...
Journal Articles
AM&P Technical Articles (2016) 174 (7): 22–24.
Published: 01 July 2016
.... This constituent, with its larger grain sizes, mainly supports high ductility in the final steel with strengthening through nanoprecipitation. The second component, microconstituent B, is comprised of nanoscale ferritic grains with nanoprecipitates that form during deformation. This provides strength due...
Journal Articles
AM&P Technical Articles (2015) 173 (2): 32–33.
Published: 01 February 2015
... during this time was duplex stainless steels, which feature a The ARgON OXYgeN DeCARBuRIZATION (AOD) PROCeSS WAS The gReATeST TeChNOLOgICAL ADVANCe IN The hISTORY OF PROCeSSINg STAINLeSS STeeL. microstructure of roughly 50% austenite and 50% ferrite to improve strength and corrosion resistance. AOD...
Journal Articles
AM&P Technical Articles (2017) 175 (1): 25–28.
Published: 01 January 2017
... to enhance understanding and result in vastly improved performance is steel processing. Prof. Emeritus George Krauss, FASM, Colorado School of Mines, gave an example by discussing the phenomena of Observation of formation of Widmanstätten ferrite (W), from ferrite allotriomorphs (A) during cooling from...
Journal Articles
AM&P Technical Articles (2017) 175 (2): 21–23.
Published: 01 February 2017
.... By using seven grain area classes rather than 14 (Fig. 4b), the distribution curve is smoother with less noise. Example 2. Figure 5a shows the grain structure of E-Brite 26-1,* a ferritic stainless steel, etched electrolytically using aqueous 60% nitric acid at 1 V dc for 20 s. The structure exhibits areas...