Influence of grain size on radiation effects in a low carbon steel

Alsabbagh, Ahmad; Valiev, Ruslan Z.; Murty, K. Linga

doi:10.1016/j.jnucmat.2013.07.049

Cited by 37 publications

(13 citation statements)

References 20 publications

(24 reference statements)

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“…Interfaces in materials such as grain boundaries (GBs) can serve as sinks for absorbing and annihilating radiation-induced defects [11,12]. Many experiments have demonstrated that nano-structured metals have enhanced radiation tolerance compared to their bulk counterparts, such as nano-crystals [11,13,14,15,16], nano-layers [17] and so on. Computer modeling has been commonly used to investigate defect production and annealing near interfaces [12,18,19].…”

Section: Introductionmentioning

confidence: 99%

Primary radiation damage near grain boundary in bcc tungsten by molecular dynamics simulations

Zhang

Zhou

et al. 2015

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 99%

Primary radiation damage near grain boundary in bcc tungsten by molecular dynamics simulations

Zhang

Zhou

et al. 2015

Journal of Nuclear Materials

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“…Next to the particles, also the grain size distribution in the matrix plays an important role for the performance of the material . In addition, the usual influence on mechanical properties, grain boundaries also increase the radiation resistance . In practice, a lack in reproducibility of the mechanical properties of these steels caused by an insufficient ability to control the microstructure evolution during the fabrication process has been a serious shortcoming .…”

Section: Introductionmentioning

confidence: 99%

Bimodal Grain Size Distribution of Nanostructured Ferritic ODS Fe–Cr Alloys

2015

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Oxide dispersion strengthened Fe–Cr alloys produced by mechanical alloying and spark plasma sintering were found to form different heterogeneous hardness distribution and microstructures depending on the milling parameters. Microstructure investigations by means of electron‐diffraction techniques and atom probe tomography revealed the presence of large particle‐free zones in one material, which is, together with the inhomogeneous deformation at short milling times, considered the main reason for the formation of a heterogeneous microstructure. The inhomogeneous temperature distribution in the sample volume during the sintering process is also expected to contribute to the formation of a heterogeneous grain size distribution in the final material.

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“…However, the data on the effect of high-dose neutron irradiation on stability of commercial nanostructured materials in the environment of real reactors are poorly presented in the literature. The first publications in this area were focused on the 321 stainless steel produced by ECAP [219] and low-carbon steel produced by ECAP-C [220,221]. In [219], a study of ECAP 321 steel before and after the neutron irradiation at temperature *350°C in the reactor BOR-60 with the maximum damage dose 5.3 dpa was carried out.…”

Section: Irradiation Resistance Of Bulk Nanostructured Metallic Matermentioning

confidence: 99%

“…However, the steel after ECAP was characterized by a rather wide distribution of grain sizes and substructures, so a conclusion of further studies to clarify and explain the observed regularities was drawn. Studies in [220,221] focused on steel 10 produced by ECAP-C, which was subjected to neutron irradiation with the maximum dose of 1.37 dpa. High number densities of nano-Mn-Si-enriched precipitates were observed in both coarse-grained and UFG steels after irradiation (Fig.…”

Section: Irradiation Resistance Of Bulk Nanostructured Metallic Matermentioning

confidence: 99%

Multifunctional Properties of Bulk Nanostructured Metallic Materials

Sabirov

Enikeev

Murashkin

et al. 2015

Bulk Nanostructured Materials With Multifunctional Properties

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This chapter focuses on multifunctional properties of bulk nanostructured metallic materials and structure-properties relationship therein. The most important structural factors affecting mechanical, physical, and chemical properties of the nanomaterials are discussed, and the strategies to their further improvement are outlined. Special attention is paid to nanostructural design for simultaneous improvement of mutually exclusive properties. Superstrength and Enhanced Mechanical PropertiesAlthough the mechanical and functional properties of all polycrystalline metallic materials are determined by several factors, the grain size of the material generally plays the most significant and often a dominant role. Thus, the strength of different polycrystalline materials is related to the grain size, d, through the Hall-Petch equation which states that the yield stress, σ y , is given bywhere σ o is termed the friction stress and k y the Hall-Petch constant [1,2]. It follows from Eq. 3.1 that the strength increases with a reduction in the grain size and this has led to an ever-increasing interest in fabricating materials with extremely small grain sizes. The fabrication of bulk samples and billets using equal channel angular pressing (ECAP), high pressure torsion (HPT), and other severe plastic deformation (SPD) techniques was a crucial first step in initiating investigations into the properties of bulk nanomaterials because the use of SPD processing permitted, and subsequently fully supported, a series of systematic studies using various nanostructured metallic materials including commercial alloys [3][4][5][6][7][8]

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Influence of grain size on radiation effects in a low carbon steel

Cited by 37 publications

References 20 publications

Primary radiation damage near grain boundary in bcc tungsten by molecular dynamics simulations

Primary radiation damage near grain boundary in bcc tungsten by molecular dynamics simulations

Bimodal Grain Size Distribution of Nanostructured Ferritic ODS Fe–Cr Alloys

Multifunctional Properties of Bulk Nanostructured Metallic Materials

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