Tensile properties and internal friction study of dislocation movement in iron–copper system as a function of copper precipitation

Konstantinović, M.J.; Almazouzi, A.; Scibetta, M.; Walle, E. van

doi:10.1016/j.jnucmat.2007.01.226

Cited by 15 publications

(12 citation statements)

References 16 publications

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“…It has been widely recognized that various types of hardening for a low‐alloy steel, such as strain hardening, solid‐solution hardening, and precipitation hardening, are all to increase the resistance to dislocation motion, which is macroscopically reflected by an increase in yield strength . Therefore, it should be reasonable to use strain hardening to adjust yield strength levels of the steel so as to investigate the effect of hardening on embrittlement of the steel.…”

Section: Methodsmentioning

confidence: 99%

Combined Effect of Phosphorus Grain Boundary Segregation, Yield Strength, and Grain Size on Embrittlement of a Cr–Mo Low‐Alloy Steel

Zhao

Song

2018

steel research int.

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The dependence of fracture appearance transition temperature (FATT) on phosphorus grain boundary segregation, yield strength, and grain size is experimentally evaluated for a 2.25Cr-1Mo low-alloy steel. Both the phosphorus boundary segregation and yield strength are directly correlated to the FATT of the steel. However, the prior austenite grain size is not directly linked to the FATT although it influences phosphorus boundary segregation and yield strength. The FATT exhibits linear relations to phosphorus segregation concentration and yield strength, but there is no synergistic effect between these two entities. Based on the measurements, an embrittlement equation is established, which is expressed as FATT( C) ¼ 0.25σ s þ 2.64C P -270, where σ s is the yield strength in MPa and C P is the phosphorus boundary concentration in at%. The calculated FATTs have a good agreement with the measured ones.

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Section: Methodsmentioning

confidence: 99%

Combined Effect of Phosphorus Grain Boundary Segregation, Yield Strength, and Grain Size on Embrittlement of a Cr–Mo Low‐Alloy Steel

Zhao

Song

2018

steel research int.

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“…The Fe-1%Cu alloy is prepared by argon-arc melting a low carbon steel in air, and adding the corresponding weight percent of pure copper. The details of the sample preparation are published elsewhere [23,24,25]. The chemical composition of the material used in this study is given in table 1.…”

Section: Methodsmentioning

confidence: 99%

Magnetic after-effect study of dislocation relaxation in Fe-based alloys

Minov¹,

Dupré²,

Konstantinović³

2011

J. Phys. D: Appl. Phys.

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To cite this version:B Minov, L Dupré, M J Konstantinović. Magnetic after-effect study of dislocation relaxation in Fe-based alloys. Journal of Physics D: Applied Physics, IOP Publishing, 2011, 44 (30) Abstract. Dislocation-related relaxation processes are studied by measuring the magnetic after-effect spectra as a function of temperature in a variety of non-deformed and cold-worked iron alloys. In the α-Fe and Fe-1%Cu alloys the peak centered at about 320 K appears as a consequence of plastic deformation. On the basis of the behavior of its parameters, such as the temperature position of the peak, the full width at half maximum, and the integrated intensities, this feature is assigned to the relaxation process of thermally-activated dislocation motion.

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“…The Fe-1%Cu-C samples are prepared using an argon-arc melting and zone refinement methods. The details of the sample preparation were published elsewhere [21]. The resulted ingots were then cold-worked after austenization tempering.…”

Section: Methodsmentioning

confidence: 99%

“…The various stages of copper precipitation were achieved by a thermal ageing process, which consists of time-dependent heat treatments at 773 K (500 • C) in an argon atmosphere, and subsequent fast quenching into the water. The duration of heat treatments was varied from 0.1 to 480 h. The ageing temperature is chosen to achieve the peak hardening in a reasonable time (15 h) [21,22], while different ageing times are chosen to create different hardening stages. The characteristic stages of precipitation hardening and softening are confirmed by Vickers hardness measurements, which are performed using a Vickers pyramid hardness machine with an applied load of 5 kg.…”

Section: Methodsmentioning

confidence: 99%

The study of dislocation dynamics in thermally aged Fe–1%Cu–C alloys by internal friction measurements

Minov

Dupré

Konstantinović

2011

J. Phys. D: Appl. Phys.

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The effect of copper precipitation and the role of carbon in the dislocation dynamics of thermally aged Fe-1%Cu-C alloys are studied by measuring the internal friction coefficient of non-deformed and cold-worked samples in the temperature range from 100 to 600 K. In non-deformed samples we observe a complex behaviour of the Snoek-relaxation peak intensity, which indicates the existence of carbon redistribution governed by the copper precipitation. In cold-worked samples, the behaviour of dislocation-related relaxation processes is explained through an increase in hardening due to copper precipitation at early precipitation stages, and through the carbon redistribution which seems to play a major role in the alloy softening at later precipitation stages.

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Tensile properties and internal friction study of dislocation movement in iron–copper system as a function of copper precipitation

Cited by 15 publications

References 16 publications

Combined Effect of Phosphorus Grain Boundary Segregation, Yield Strength, and Grain Size on Embrittlement of a Cr–Mo Low‐Alloy Steel

Combined Effect of Phosphorus Grain Boundary Segregation, Yield Strength, and Grain Size on Embrittlement of a Cr–Mo Low‐Alloy Steel

Magnetic after-effect study of dislocation relaxation in Fe-based alloys

The study of dislocation dynamics in thermally aged Fe–1%Cu–C alloys by internal friction measurements

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