Effects of prior plastic deformation on the distribution and morphology of AlN precipitates in α iron

Furubayashi, Ei-ichi; Endo, H.; Yoshida, Hideo

doi:10.1016/0025-5416(74)90005-6

Cited by 16 publications

(11 citation statements)

References 29 publications

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“…It was found that hot-deformation could accelerate the nucleation and coarsening of the second-phase particles due to the large amount of dislocation that is introduced into the steels by deformation [8][9][10]. In addition, previous studies [11][12][13] have revealed that cold-deformation also has a strong influence on the precipitation and growth of the precipitates during subsequent annealing. It was found that the second-phase particles were finer and distributed more uniformly by cold-deformation [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cold-Deformation on Austenite Grain Growth Behavior in Solution-Treated Low Alloy Steel

Zhang

Matsuura

Ohno

2018

Metals

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The occurrence of abnormal grain growth (AGG) of austenite during annealing is a serious problem in steels with carbide and/or nitride particles, which should be avoided from a viewpoint of mechanical properties. The effects of cold deformation prior to annealing on the occurrence of AGG have been investigated. It was found that the temperature range of the occurrence of AGG is shifted toward a low temperature region by cold deformation, and that the shift increases with the increase of the reduction ratio. The lowered AGG occurrence temperature is attributed to the fine and near-equilibrium AlN particles that are precipitated in the cold-deformed steel, which is readily dissolved during annealing. In contrast, coarse and non-equilibrium AlN particles precipitated in the undeformed steel, which is resistant to dissolution during annealing.

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Section: Introductionmentioning

confidence: 99%

Effect of Cold-Deformation on Austenite Grain Growth Behavior in Solution-Treated Low Alloy Steel

Zhang

Matsuura

Ohno

2018

Metals

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“…In these previou s works, effects of small a mounts of prior deformation have been studied o n the distribution a nd m orphology of AlN. 23,24) Th e precipita tes are so fin e that they are indetectable by transmission electron mi croscop y at 500°C or so, but with the a nnealing temperature increased at a consta nt rate up to 750°C , the precipitates are revealed to b e much fin er and m ore densely and uniforml y distributed in the previously d eformed specimens than in undeformed ones. 24 ) For example, prior elongation of 5% resulted in a ten fold increase in the precipitate d ensity at 750°C.…”

Section: V Discussionmentioning

confidence: 99%

Texture Control in a Fe-Al-N Alloy by Thermomechanical Processing

1975

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Effect of thermomechanical processing I) rior to conventional cold rolling upon the recrystallization texture has been examined in an Fe-0.05Al-0.005N alloy. A new method, which is characterized by thermomechanical treatment (deforma tion and aging) of hot rolled sheets and by rapid terminal annealing, has been prolJosedfor develojJment of predominantly (J 11) textures in aluminum killed steel. The thermomechanical treatment jJrovides finely disjJersed A1N particles which are effective to cause (1 J J) texture.

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“…such as, for instance, the presence of dislocation loops that might influence nucleation [28]. Within these limitations, however, the results are considered useful for the analysis of the precipitation kinetics of AlN in ferrite.…”

Section: Precipitation In Ferrite In Carbon Steelsmentioning

confidence: 95%

Application of computational modeling to the kinetics of precipitation of aluminum nitride in steels

Silva

Nakamura²,

Rizzo

2012

J min metall B Metall

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In previous works the possibilities and limitations of the application of calculations in the Al-Fe-N system to describe the precipitation of AlN in steel, both in the solid state and during the solidification were discussed and some difficulties related to the extension of these calculations to more complex steel systems, due to limitations in the thermodynamic data were also presented. Presently, the precipitation kinetics of AlN in ferrite (BCC) and austenite (FCC) is discussed. The correct description of the precipitation of AlN in both phases is relevant to: (a) the precipitation at higher temperatures, in the austenite field, that occurs in some steels, (b) the concurrent precipitation of this nitride with the annealing treatment, when the steel is mostly ferritic, used in the processing of some types of deep drawing steels (c) the precipitation of this nitride in some silicon alloyed electric steels at relatively high temperatures, when these steels can have significant fractions of BCC and FCC in their microstructure. The precise knowledge of the precipitation-dissolution behavior of AlN in special in these two latter classes of steels is of great importance to their correct processing. In this work, a computational tool for simulating multiparticle precipitation kinetics of diffusion-controlled processes in multi-component and multi-phase alloy systems is employed in an attempt to describe these precipitation processes. The results are compared with experimental data on precipitation. The assumptions necessary for the application of the multi-particle modeling tool are discussed, agreements and discrepancies are identified and some possible reasons for these are indicated. Furthermore, the impact of the use of different sources of data on steel processing development is discussed and the need for further studies highlighted

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Effects of prior plastic deformation on the distribution and morphology of AlN precipitates in α iron

Cited by 16 publications

References 29 publications

Effect of Cold-Deformation on Austenite Grain Growth Behavior in Solution-Treated Low Alloy Steel

Effect of Cold-Deformation on Austenite Grain Growth Behavior in Solution-Treated Low Alloy Steel

Texture Control in a Fe-Al-N Alloy by Thermomechanical Processing

Application of computational modeling to the kinetics of precipitation of aluminum nitride in steels

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