Acta Metallurgica et Materialia

Y.C. Lo

S.K. Wu

H.E. Horng

A study of B2↔B19↔B19′ two-stage martensitic transformation in a Ti50Ni40Cu10 alloy

Ti50Ni40Cu10合金中B2↔B19↔B19′两阶段马氏体相变的研

R. Shimizu

J. Harase

D.J. Dingley

Prediction of secondary recrystallization texture in Fe-3% Si by three-dimensional texture analysis

Fe-3% Si中二次再结晶织构的三维织构分析预测

Abstract The present investigation is concerned with analytical modelling of grain growth in metals and alloys in the presence of growing and dissolving precipitates. In Part II the modelling methodology presented in Part I for normal grain growth has been further developed and applied to abnormal grain growth. The judicious construction of the constitutive equations makes full use of both dimensionless parameters and calibration techniques to eliminate poorly known kinetic constants. The results are presented in the form of novel “mechanism” maps (by utilizing the concept of group variables) which show the competition between the various processes that lead to abnormal grain growth during heat treatment. This approach has made it possible to fit many of the apparently conflicting results into a more consistent picture and establish a simple criterion for the initiation of abnormal grain growth under different pinning conditions. It is concluded that the key to a verified, quantitative understanding of the phenomenon of abnormal grain growth lies primarily in the recognition of the important effect of precipitate stability on the secondary recrystallization kinetics.

I. Andersen

Ø. Grong

N. Ryum

Analytical modelling of grain growth in metals and alloys in the presence of growing and dissolving precipitates—II. Abnormal grain growth

金属和合金中生长和溶解析出物存在下的晶粒生长分析建模——II. 异常晶粒生长

The characteristics of the toughening of brittle matrices by ductile inclusions are demonstrated by model experiments, and analysed using recently developed techniques. Design considerations, and the transition from single-crack mechanics to the regime of multiple cracking, or "continuum damage" mechanics are described. On étudie les caractéristiques de l'augmmentation de ténacité des matrices fragiles par les inclusions ductiles grâce à des expériences modèles; elles sont analysées en utilisant de techniques récemment développées. On dérit des considérations de conceptio, et la transition de la mécanique à une seule fissure au régime à fissures multiples, ou mécanique du "dégât continu". Die Charakteristika der Zähigkeitsverbesserung spröder Matrix-Materialien durch duktile Einshls̈se werden mit Modell-Experimenten gezeigt und mit kürzlich entwickelten Methoden analysiert. Überlergungen zur Auslegung und der Übergang von der Ein-Riβ-Mechanik zum Bereich vieler Risse oder der "Kontinuums-Schädigungs"-Mechanik werden beschrieben.

M. Bannister

H. Shercliff

G. Bao

F. Zok

M.F. Ashby

Toughening in brittle systems by ductile bridging ligaments

脆性系统中韧化作用的延性桥接韧带

RGO (regular grain oriented) electrical steel is produced by a two stage cold rolling process with intermediate annealing. In this study the influence of surface layers on the recrystallization behaviour is investigated. By controlled thinning of the sheets at different processing stages surface layers were removed single- and double-sidedly in successive steps of 1/10th of half thickness keeping the final thickness, as well as the 2nd cold reduction, constant. All specimens were processed to the final product relating to standard conditions and texture analysis as well as magnetic measurements being performed, indicating very sensitively any disturbance in Goss-texture development. A deterioration of Goss-texture sharpness only appears if a critical surface layer is removed from both sides of the sheet, no matter the processing stage at which the removal was performed. This result suggests a kind of “texture inheritance” due to a texture profile being present at hot strip with a strong Goss-texture at its surface layer. The observed detrimental effect on secondary recrystallization due to the surface removal can be explained by the texture and microstructure development during the processing of RGO electrical steel. Thus the complete texture and microstructure development was investigated first and explained relating to theoretical models of texture development during deformation and leading to a new understanding of what was called “texture inheritance”.

A. Böttcher

K. Lücke

Influence of subsurface layers on texture and microstructure development in RGO electrical steel

亚表面层对RGO电工钢织构和微观结构发展的影响

Woong Kil Choo

The effect of nitrogenation on GMR and microstructures of granular (Ni0.8Fe0.2)20Ag80 thin films

氮化对颗粒(Ni0.8Fe0.2)20Ag80薄膜的GMR和微观结构的影响

氮化对颗粒(Ni0.8Fe0.2)20Ag80薄膜的GMR效应和微观结构的影响

氮化对颗粒(Ni0.8Fe0.2)20Ag80薄膜的巨磁阻效应和微观结构的影响

Publication Information	Publisher: Pergamon Press Ltd.，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1990，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

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A study of B2↔B19↔B19′ two-stage martensitic transformation in a Ti50Ni40Cu10 alloy

Prediction of secondary recrystallization texture in Fe-3% Si by three-dimensional texture analysis

Analytical modelling of grain growth in metals and alloys in the presence of growing and dissolving precipitates—II. Abnormal grain growth

Toughening in brittle systems by ductile bridging ligaments

Influence of subsurface layers on texture and microstructure development in RGO electrical steel

The effect of nitrogenation on GMR and microstructures of granular (Ni0.8Fe0.2)20Ag80 thin films

The effect of nitrogenation on GMR and microstructures of granular (Ni0.8Fe0.2)20Ag80 thin films

The effect of nitrogenation on GMR and microstructures of granular (Ni0.8Fe0.2)20Ag80 thin films

The effect of nitrogenation on GMR and microstructures of granular (Ni0.8Fe0.2)20Ag80 thin films

The effect of nitrogenation on GMR and microstructures of granular (Ni0.8Fe0.2)20Ag80 thin films