Role of second phases and grain boundaries on dynamic recrystallization behavior in ZK60 magnesium alloy

Peng, Peng; Zhang, Kunmin; She, Jia; Tang, Aitao; Zhang, Jianyue; Song, Kai; Yang, Qingshan; Pan, Fusheng

doi:10.1016/j.jallcom.2020.157958

Cited by 75 publications

(7 citation statements)

References 63 publications

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“…In the subsequent heat-treatment process, the alloying elements tend to segregate at the defects [15]. This segregation behavior can stimulate the formation of precipitates and affect the distribution of precipitates [16]. Corresponding phenomena have been widely reported in Mg and Al alloys [17,18].…”

Section: Introductionmentioning

confidence: 94%

Significant Improvement of Strength in Wrought 945A Ni-Based Superalloy by Aging Treatment

et al. 2021

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Ni-based superalloys have attracted much attention due to their good resistance to high-temperature and -pressure environments. Compared with the traditional 718 Ni-based superalloy, 945A Ni-based superalloy with a lower Ni content showed better performance in terms of precipitated hardening and corrosion resistance. In this study, the aging behavior and the evolution of mechanical properties of the wrought 945A Ni-based superalloy were investigated. Microstructures were analyzed by scanning electron microscopy (SEM), bright field transmission electron microscopy (TEM), high-resolution TEM and high-angle annular dark field scanning TEM. Mechanical properties were measured by tensile and compressive tests. The results illustrated that the compressive yield stress was significantly improved by increasing aging time from 229 to 809 MPa. The increase was greater than 220%. This improvement was mainly attributed to the precipitates of the γ′ phase and carbides during the aging treatment. The residual dislocations generated by the plastic processes stimulated the formation of these precipitates. The precipitation behavior and the strengthening mechanism are discussed in detail.

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Section: Introductionmentioning

confidence: 94%

Significant Improvement of Strength in Wrought 945A Ni-Based Superalloy by Aging Treatment

et al. 2021

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“…[ 13 ] Accelerated recrystallization by secondary phase particles is also known as particle‐stimulated nucleation (PSN). This effect was demonstrated by Peng et al [ 14 ] on a dynamically recrystallized ZK60 magnesium alloy. In the article by Huang et al, [ 15 ] this phenomenon is explained in more general terms.…”

Section: Introductionmentioning

confidence: 65%

“…Ehrich et al [ 9 ] investigated the relationship between SFE and DRX microstructure of Al–Mg alloys. The role of primary particles during DRX with respect to the PSN effect of a ZK60 magnesium alloy was experimentally investigated by Peng et al [ 14 ] Nes et al [ 28 ] show in their study the influence of morphology and distribution of precipitates on the Zener pinning and grain development during DRX. Patel et al [ 28 ] have described the effect of secondary phases on the resulting microstructure during friction stir welding in a review paper.…”

Section: Discussionmentioning

confidence: 99%

Precipitation Evolution in the Heat‐Affected Zone and Coating Material of AA2024 Processed by Friction Surfacing

et al. 2022

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Herein, self‐mating coating depositions are generated from Al–Cu–Mg alloy AA2024 by using the solid‐state joining method, friction surfacing (FS). The precipitation evolution in the heat‐affected zone (HAZ) of the substrate material and in the deposited coatings is analyzed using hardness mapping, temperature measurements, differential scanning calorimetry (DSC), transmission electron microscopy (TEM) as well as synchrotron small‐angle X‐Ray scattering (SAXS) used for mapping mean particle radius and particle volume fraction over the whole sample. Quantitative measurements of the thermal cycle using thermocouples positioned inside the substrate sheets reveal a distinguishing temperature distribution and a maximum temperature up to 420 °C close to the center of the bonding zone (BZ). The hardness distribution is frequently encountered in solid‐state joining processes. It can be understood taking into account the complex modifications of the precipitate size distribution, including small Guinier–Preston–Bagaryatsky GPB (Al2CuMg)/Guinier–Preston GP(I) (Al2Cu)‐zones and larger S′ (Al2CuMg)/θ′ (Al2Cu)‐phases. Uniform precipitation of small and larger particles leads to an increase in hardness. It has become apparent that the highest hardness values within the HAZ are obtained when the volume fractions of small and larger particles are increased and equally distributed.

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“…Scholars have quantitatively studied the effects of shape, second-phase particle size and volume fraction on grain growth [44,45]. Second-phase particles have a strong shape-dependent pinning effect on grain growth.…”

Section: Resultsmentioning

confidence: 99%

Abnormal grain growth induced by <112̄0> orientation of AZ31 magnesium alloy

Chen

Peng

et al. 2023

Materials Science and Technology

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The abnormal grain growth behaviour and preferential orientation of AZ31 Mg alloy were systematically examined. Abnormal grain growth was observed after annealing at 500°C for 9 h, and the grain growth rate was 1.3 mm h−1. Due to the abnormal grain growth, the activation energy of grain growth was reduced from 172 to 104 KJ mol−1. The abnormal grains with <11 [Formula: see text] 0> orientation grew preferentially, which resulted in the increase of the <11 [Formula: see text] 0> type texture intensity and the decrease of the <0001>. The energy difference of the misorientation is the main driving force for the formation of abnormal grains with <11 [Formula: see text] 0> orientation.

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Role of second phases and grain boundaries on dynamic recrystallization behavior in ZK60 magnesium alloy

Cited by 75 publications

References 63 publications

Significant Improvement of Strength in Wrought 945A Ni-Based Superalloy by Aging Treatment

Significant Improvement of Strength in Wrought 945A Ni-Based Superalloy by Aging Treatment

Precipitation Evolution in the Heat‐Affected Zone and Coating Material of AA2024 Processed by Friction Surfacing

Abnormal grain growth induced by <112̄0> orientation of AZ31 magnesium alloy

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