Embrittlement susceptibility induced by impurities segregation to grain boundaries in martensitic steels candidates to be used in ADS

Garcı́a-Mazarı́o, M; Lancha, A.M.; Hernández‐Mayoral, M.

doi:10.1016/j.jnucmat.2006.10.018

Cited by 8 publications

(5 citation statements)

References 20 publications

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“…Procedure used in this work was developed and proven for P segregation in martensitic EM-10 steel of 9Cr-1Mo(Ni) type [2]. The applied step cooling treatment consisted of five stages: 650°C/1 h, 590°C/15 h, 575°C/24 h, 550°C/48 h and 520°C/72 h.…”

Section: Methodsmentioning

confidence: 99%

“…These steels are nowadays under consideration as structural materials for perspective power sources: (i) fission reactors based on 235 U a 232 Th cycles [1], (ii) acceleration driven systems [2] and (iii) fusion reactors with magnetic plasma confining [3]. Several versions of RAFM (reduced activation ferritic-martensitic) steel of (9-12)Cr-X type have been developed in Europe [4,5], Japan [6,7], USA [1] and China [8].…”

Section: Introductionmentioning

confidence: 99%

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Effect of thermal ageing on the impact fracture behaviour of Eurofer’97 steel

Hadraba

Dlouhý

2009

Journal of Nuclear Materials

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of thermal ageing on the impact fracture behaviour of Eurofer’97 steel

Hadraba

Dlouhý

2009

Journal of Nuclear Materials

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“…Furthermore, Ni and Mn atoms evidently segregate to the interfaces between the Cu-rich phase and the α-Fe matrix, while C, P, Mo, Si atoms prefer to segregate towards the α-Fe matrix near the interfaces, but their segregation amount at the interfaces of Cu-rich phase and the α-Fe matrix is less than that at the grain boundaries. ¡¹Å Þ [1] ¡±Î³ [2] ¡¸ [3] ¡ß [4,5] ¡ [6,7] Ã [8,9] ³Ò . µ ¶ Ö ¶Ø ¦ ¦ ÒÀ¡ ¦ ÂÃ ¼ ¥Ú³, Í¤¡¹Å ³¢³Ò [10,11] .…”

mentioning

confidence: 99%

Segregation of Atoms on the Interfaces in the RPV Model Steel Studied by Apt

Lin-Ling²,

Liu³

et al. 2013

ACTA METALLURGICA SINICA

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The segregation of impurity or solute atoms to grain boundaries as well as phase interfaces can either improve or degrade the chemical, physical and mechanical properties of alloys. This phenomenon has been studied widely for iron based alloys, and the analysis method by an atom probe tomography (APT) is a powerful tool for better understanding this problem. The resulting composition changes of grain boundaries and phase interfaces, as well as the precipitation of Cu-rich nanophases, are frequently associated with the phenomenon of embrittlement in ferritic reactor pressure vessel (RPV) steels. The present work was carried out to study the segregation of impurity or solute atoms to grain boundaries as well as phase interfaces in a RPV model steel with higher content of Cu (0.53%, atomic fraction) than commercially available one. The RPV model steel was prepared by vacuum induction melting. The specimens were further heat treated by water quenching at 880 ¢ for 30 min and tempering at 660 ¢ for 10 h, and finally aged at 370 ¢ for 3000 h. The results show

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“…Grain structure is typical for bulk samples. As consequence, impurity segregation at grain boundaries is the primary cause of a material destruction [1][2][3]. For irradiation effect on segregation to be studied, the following conditions should be fulfilled: 1) beams of high current density for high dose rate are required; 2) different kinds of ions should be used for studying impact of different defects upon a segregation process; 3) mapping of elements distribution is required since segregation occurs at grain boundaries; 4) this method should have low detection limit of atom impurities to detect segregation at early stages.…”

Section: Introductionmentioning

confidence: 99%

The Use of Nuclear Scanning Microprobe to Study Radiation-Induced Migration of Impurities at the Grain Boundaries in Construction Materials

Romanenko¹,

Ponomarev²

2016

J. Nano- Electron. Phys.

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The application of scanning nuclear microprobe for study a radiation-induced migration of impurities at the grain boundaries in structural materials was considered. The work describes the sample preparation for a further irradiation of microscopic areas which include a few grains. Copper samples with deposited sulfur film were used in the present work. Determinations of a chemical composition of the samples, as well as a mapping of the element distribution, were based on the analysis of characteristic paticle induced X-ray emission (PIXE). Two-dimensional distribution maps of elements, that revealed a presence of randomly distributed inclusions of silicon as a result of mechanical treatment, were obtained using the method of micro-PIXE. The quality difference of sulfur films deposited by thermal evaporation and a drop method was shown.

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Embrittlement susceptibility induced by impurities segregation to grain boundaries in martensitic steels candidates to be used in ADS

Cited by 8 publications

References 20 publications

Effect of thermal ageing on the impact fracture behaviour of Eurofer’97 steel

Effect of thermal ageing on the impact fracture behaviour of Eurofer’97 steel

Segregation of Atoms on the Interfaces in the RPV Model Steel Studied by Apt

The Use of Nuclear Scanning Microprobe to Study Radiation-Induced Migration of Impurities at the Grain Boundaries in Construction Materials

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