Microstructural and mechanical characteristics of EUROFER’97 processed by equal channel angular pressing

Abstract:The EUROFER 97 steel was processed by equal channel angular pressing (ECAP) at 550 • C for four passes via route C. The starting material consisted of ferrite-martensite dual phase composed by small subgrains of about 0.5 m and low angle boundaries less than 5 • . The volume fraction of second phase particles was around 10 vol.%, besides a texture formed by several fibers orientations belonging to the zone axes 110 , 111 and 112 . Increasing ECAP deformation, this microstructure became into equiaxed grain structures of less than 1 m, and the misorientation between contiguous grains increased. This refine-ment of the microstructure was accompanied by the development of a new texture described by a family of fiber orientations related by rotations around axes 110 and 111 . Tensile tests have revealed that an ECAP treatment at 550 • C for two passes could significantly strengthen the tempered material still maintaining good ductility.

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“…After the first ECAP pass the microstructure was reoriented and shear strained as shown in Fig. 2(c) and (d) [12]. After four passes, Fig.…”

Section: Resultsmentioning

confidence: 99%

Texture and mechanical properties of EUROFER 97 steel processed by ECAP

Eddahbi

Monge

Fernández

et al. 2011

Materials Science and Engineering: A

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“…ECAP processing enhances both yield strength and ultimate tensile stress up to temperatures around 773 K [102]. Above this temperature, which is near the processing temperature, the material processed four times via route C or eight times via B A became softer than the tempered material and the materials processed by 1 pass, or 2 passes via route C. The effect of ECAP on the temperature dependence of the hardening ratio (UTS/yield strength) is studied.…”

Section: Fig 8 Hardness Change Of Ht9 With Ht Condition [98]mentioning

confidence: 99%

“…To study microstructural and mechanical characteristics of Eurofer 97 specimens in the AR condition were ECAP processed at 550 °С through a die with an intersection angle of 105° [102]. The billet was rotated around its longitudinal axis before inserting in the die for the following ECAP pass, either 180° (route C) or +90° and -90° alternatively (route B A ).…”

Section: Fig 1 the Heat Treatment Procedures For T91 Steel Acair Cool...mentioning

confidence: 99%

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A Review: Ferritic-Martensitic Steels – Treatment, Structure and Mechanical Properties

Rostova¹,

Tolstolutska²

2022

Problems of Atomic Science and Technology

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The constantly growing consumption of electricity requires the development and implementation of more powerful and energy-intensive systems of the new generation. Fusion and fission reactors of the 4th generation (Gen-IV) will make it possible to cover the growing demand for electricity. Since Gen-IV reactors will operate at higher temperatures and radiation doses, the problem of selecting scientifically based structural materials arises, since conventional reactor materials are not suitable for use in such severe operating conditions. Among the structural materials under consideration for future generations of reactors, special attention is paid to 9…12% Cr ferritic-martensitic steels due to their higher radiation tolerance and excellent mechanical properties compared to traditionally used austenitic steels. This review presents the main ferritic-martensitic steels that will be used as structural materials, their structure, mechanical properties and various thermal and thermomechanical treatments applied to them.

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“…A first generation of ODS alloys was developed and has been produced in cooperation with Plansee AG (Austria). The microstructure and mechanical properties of these alloys has already been studied [3,[5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of Eurofer 97 and ODS-Eurofer alloys compared to traditional stainless steels

et al. 2011

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In the present work, the corrosion resistance of ferritic-martensitic EUROFER 97 and ODS-EUROFER steels was tested in solutions containing NaCl or H 2 SO 4 and KSCN, both at 25°C. The results were compared to those of AISI 430 ferritic and AISI 410 martensitic conventional stainless steels. The as-received samples were tested by electrochemical techniques, specifically, electrochemical impedance spectroscopy, potentiodynamic polarization curves, and double-loop electrochemical potentiokinetic reactivation tests. The surfaces were observed by scanning electron microscopy after exposure to corrosive media. The results showed that EUROFER 97 and ODS-EUROFER alloys present similar corrosion resistance but lower than ferritic AISI 430 and martensitic 410 stainless steels.

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Microstructural and mechanical characteristics of EUROFER’97 processed by equal channel angular pressing

Cited by 10 publications

References 12 publications

Texture and mechanical properties of EUROFER 97 steel processed by ECAP

Texture and mechanical properties of EUROFER 97 steel processed by ECAP

A Review: Ferritic-Martensitic Steels – Treatment, Structure and Mechanical Properties

Corrosion behavior of Eurofer 97 and ODS-Eurofer alloys compared to traditional stainless steels

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