Influence of test temperature on impact toughness of X70 pipe steel welds

Kryzhanivs’kyy, Yevstakhiy; Poberezhny, L.; Maruschak, Pavlo; Lyakh, M; Slobodyan, Volodymyr; Zapukhliak, Vasyl

doi:10.1016/j.prostr.2019.07.047

Cited by 18 publications

(6 citation statements)

References 12 publications

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“…The fracture surfaces were characterized by developed shapes with strain localization zones, as well as local delamination. Apparently, depth of these layers largely determined the energy intensity to failure, and as mentioned above, was reflected in the shape of the shear lips [46]. …”

Section: Fractographic Analysismentioning

confidence: 91%

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

Panin

Власов

Моисеенко

et al. 2021

Metals

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The aim of the paper was to investigate the helical rolling parameters (a number of passes) for the microstructural modification and the low-temperature impact toughness improvement of the 09Mn2Si High Strength Low-Alloyed (HSLA) steel. In order to achieve this purpose, work spent to crack initiation and propagation was analyzed and compared with patterns of fracture surfaces. The microstructure and impact toughness values were presented in the temperature range from +20 to –70°C. Also, the fracture mechanisms in individual regions on the fracture surfaces were discussed. In addition, a methodology for computer simulation of the process was developed and implemented within the framework of the excitable cellular automata method and its integration with the kinetic theory of fracture. Finally, a theoretical analysis of the effect of grain shapes and orientations on the strain response patterns of a certain meso-volume simulating the material after the helical rolling was carried out.

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Section: Fractographic Analysismentioning

confidence: 91%

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

Panin

Власов

Моисеенко

et al. 2021

Metals

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“…With this condition, higher energy is needed for plastic deformation during the loading condition. 19,44,45 The higher impact toughness of 17.4 J/cm 2 is seen in the composites while using 50E50FA as reinforcement over others due to the following reasons: (a) the increased hardness in 50E50FA specimen (b) the high load bearing capacity of the emery and FA particles (c) homogeneous distribution of the particles throughout the matrix with good interfacial bonding.…”

Section: Impact Toughnessmentioning

confidence: 99%

Influence of Fly Ash and Emery based particulate reinforced AA7075 surface composite processed through friction stir processing

Suganeswaran

Parameshwaran

Sathiskumar³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The novel friction stir technology is adopted in modern automotive industries to meet the desired properties like hardness, impact toughness and tribological behaviour over the conventional techniques like stir casting, compo casting, squeeze casting, electroplating and infiltration methods. AA7075 surface composites fabricated with different volume fractions of fly ash and emery particles is said to enhance the aforementioned properties. The composites are processed through friction stir process (rotational speed −1200 rpm, transverse speed – 56 mm/min, tool tilt angle – 2 °). During characterization, the Microstructural examination of surface composites depicts fine and homogenous distribution of reinforcements in the friction stir process region owing to severe plastic deformation and dynamic recrystallization process. Substantially, good interface is formed between the reinforcement particulates and base substrate. Inclusion of Fe3O4, Al2O3 and SiO2 constituents through fly ash and emery reinforcements associated with the homogenous dispersion strengthening mechanism favours for the superior hardness of surface hybrid composite specimen 50E50FA. Decremented grain size and load bearing capacity of the reinforcements is beneficial for the crack propagation resistance that enhances the impact toughness behaviour (17.4 J/cm2) of the same specimen. Wear rate of the specimens are evaluated through pin on disc tribometer. The decrease in the wear rate of hard specimen 50E50FA is observed due to the reduced contact area between its surface and counter disc. The morphology of worn specimens using SEM analysis shows the combined abrasive and adhesive wear as the worn mechanism.

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“…The fractography was observed at both macroscopic and microscopic levels for the specimens tested at 20 • C, −40 • C, and −80 • C. Zones A and B of the fracture surface can be considered to be later stage and early stage of crack propagation [31,32]. Figure 7 shows the fractography of QHA tested at 20 • C, −40 • C, and −80 • C. As shown in Figure 7a, Zone A and Zone B are both composed of large and small dimples for QHA20.…”

Section: Fractography Observationmentioning

confidence: 99%

Low-Temperature Impact Fracture Behavior of Medium Manganese Steel with Bcc-fcc Duplex Microstructures

Du,

Gao,

Wang

et al. 2024

Metals

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Impact fracture behavior at low temperatures was investigated in medium manganese steel with bcc-fcc duplex microstructures. The impact energy was above 150 J (−80~20 °C) and the fractography showed dimples for inter-critical annealing at 630 °C (QHA) because of the high retained austenite stability and low martensite dislocation density. The impact energy was from 180 J (20 °C) to 60 J (−80 °C) and the fractography was intergranular for inter-critical annealing at 610 °C (QLA) because of the low stability of RA and carbides precipitated at the prior austenite grain boundaries. The impact energy was below 60 J (−80~20 °C) and the fractography showed cleavage for direct quenching (DQ) because of the high dislocation density of martensite.

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Influence of test temperature on impact toughness of X70 pipe steel welds

Cited by 18 publications

References 12 publications

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

Influence of Fly Ash and Emery based particulate reinforced AA7075 surface composite processed through friction stir processing

Low-Temperature Impact Fracture Behavior of Medium Manganese Steel with Bcc-fcc Duplex Microstructures

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