Journal ArticleDOI
Competitive growth of stable and metastable Fe- C- X eutectics: Part I. experiments
P. Magnin,Wilfried Kurz +1 more
TLDR
In this paper, the effect of small additions of Si, P, Cr, Mn, Ti, Al, and S to pure Fe-C eutectic, upon the transi-tion velocities from grey to white and white to grey cast iron, has been measured by varying the growth rate during directional solidification.Abstract:
The effect of small additions of Si, P, Cr, Mn, Ti, Al, and S to pure Fe-C eutectic, upon the transi-tion velocities from grey to white and white to grey cast iron, has been measured by varying the growth rate during directional solidification. As a result, it is found that alloying elements can be classified into three types: graphitizing (Si, Al, P, and S), carburizing (Cr), and “hysteretic effect” (Mn, Ti). The well-known influence of a thermal gradient (or the superheat) has been shown to af-fect only the grey-to-white transition. Growth undercoolings were measured as a function of growth rate, while the average lamellar spacings were determined from transverse sections of directionally solidified samples. A small addition of the element studied can have a marked effect upon these parameters.read more
Citations
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Journal ArticleDOI
Eutectic growth: A modification of the Jackson and Hunt theory
P. Magnin,Rohit Trivedi +1 more
TL;DR: In this paper, the Jackson and Hunt theory of eutectic growth is modified in order to get a better understanding of the physical mechanisms driving the solidification process, and the volume fractions of the eUTectic phases are adjusted by the movement of the three-phase junctions.
Journal ArticleDOI
Growth of irregular eutectics and the AlSi system
TL;DR: In this paper, the theory of irregular eutectic growth is reexamined, based on the new model previously developed, and the results are compared with those previously obtained in the Fe C and Fe Fe 3 C alloys.
Journal ArticleDOI
The role of crystallography and thermodynamics on phase selection in binary magnesium–rare earth (Ce or Nd) alloys
Mark Alan Easton,Mark Alan Easton,Mark Antony Gibson,Mark Antony Gibson,Dong Qiu,Su-Ming Zhu,Su-Ming Zhu,Joachim Gröbner,Rainer Schmid-Fetzer,Jian Feng Nie,Jian Feng Nie,Ming-Xing Zhang +11 more
TL;DR: In this article, the phase selection in Mg-Ce and Mg−Nd alloys was investigated under different casting conditions and the phase remains stable even after long annealing times at high temperatures.
Journal ArticleDOI
Mechanisms of damage by salt
TL;DR: In this paper, the current understanding of the mechanisms by which salt crystallization causes damage to limestone is described, and a discussion of methods to prevent damage that may alter one of the crystallization steps, such as nucleation, crystal growth, disjoining pressure between mineral and crystal surfaces, or solution properties.
Journal ArticleDOI
Microstructure and mechanical properties of Al2O3/Y3Al5O12/ZrO2 hypereutectic directionally solidified ceramic prepared by laser floating zone
TL;DR: In this article, laser floating zone (LFZ) solidification experiments were performed on Al2O3/Y3Al5O12/ZrO2 hypereutectic with the solidification rates between 2μm/s and 30μm /s.
References
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Journal ArticleDOI
Steady state columnar and equiaxed growth of dendrites and eutectic
TL;DR: In this article, an analysis for the growth of equiaxed grains ahead of the columnar front during directional solidification is presented, and the model considers both single-phase and eutectic growth.
The solidification of metals
TL;DR: In this article, the authors present a review of the literature in the field of solidification of metal ingots and discuss the need for research in laboratory work, rather than thenmachines or equipment employed.
Book
The physical metallurgy of cast iron
TL;DR: In this paper, SIDNEY H AVNER et al. discuss the differences between cast iron and metallurgical and discuss the effect of the difference in the two domains on each other.
Journal ArticleDOI
An analytical model of irregular eutectic growth and its application to Fe-C
P. Magnin,Wilfried Kurz +1 more
TL;DR: In this article, a morphological criterion for branching is used, involving a parameter which is experimentally shown to be a material constant for Fe-C. The model developed also explains the influence of the thermal gradient at low solidification rates, and deviations from the λ 2 V = const relationship.
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