Influence of Minor Cr Additions on Crystal Growth in Rapidly Solidified Al-20Zn Alloys

Autor: Félix Royer, Julien Zollinger, Bernard Rouat, Michel Rappaz

Publikováno v: Materials, Vol 13, Iss 2, p 379 (2020)

It has been discovered quite recently that Icosahedral Short-Range Order (ISRO) of atoms in the liquid phase of metallic alloys surrounding some trace elements added to the melt can influence both the nucleation and growth of the primary phase. In th

Externí odkaz: https://doaj.org/article/dcb94d703165418f9b9c67deec754a4f

Numerical Model of Rapidly Solidified Droplets of Al–33 Wt Pct Cu Eutectic Growth

Autor: Michel Rappaz, A.-A. Bogno, J. Valloton, Hani Henein

Publikováno v: Metallurgical and Materials Transactions A. 53:460-469

Rapid solidification of Al–Cu droplets of eutectic composition was carried out using Impulse Atomization (a type of drop tube). Two distinct morphologies were observed: an irregular undulated eutectic assumed to form during recalescence, followed b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c4f277b5f34f0b2f0be3961113f6615
https://doi.org/10.1007/s11661-021-06504-1

Influence of Ir Additions and Icosahedral Short Range Order (ISRO) on Nucleation and Growth Kinetics in Au-20.5Wt Pct Cu-4.5Wt PctAg Alloy

Autor: J. Guyon, Michel Rappaz, Julien Zollinger, Bernard Rouat, S. Pillai

Publikováno v: Metallurgical and Materials Transactions A
Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2019, ⟨10.1007/s11661-019-05176-2⟩
Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2019, pp.2279-2288. ⟨10.1007/s11661-019-05176-2⟩

Based on detailed EBSD analyses, Kurtuldu et al. (Acta Mater. 70:240–248, 2014) have explained the grain refinement of Au-12.5 wt pctCu-12.5 wt pctAg (yellow gold) by the addition of minute amounts of Ir in terms of “icosahedral quasicrystal (iQC

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f68d256c73f91761c5e6bb65682a410d
https://doi.org/10.1007/s11661-019-05176-2

Fundamentals of Solidification 5th Edition with Solutions Manual

Autor: Wilfried Kurz, David J. Fisher, Michel Rappaz

Since the 4th 1998 edition, there have been numerous crucial advances to the modelling and the basic understanding of solidification phenomena, and with its linking to experimental results. These topics have been incorporated into this 5th Fully Revi

Solidification of Metallic Alloys: Does the Structure of the Liquid Matter?

Autor: Güven Kurtuldu, Michel Rappaz, Philippe Jarry, Julien Zollinger

Publikováno v: Metallurgical and Materials Transactions A
Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2020, 51, pp.2651. ⟨10.1007/s11661-020-05770-9⟩

International audience; In 1952, Frank (Proc R Soc Lond Ser-Math Phys Sci 215:43-46, 1952) already postulated that Icosahedral Short Range Order (ISRO) of atoms in the liquid could possibly explain the large nucleation undercoolings measured in metal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8acedbb5808a4762b0cddbcac4b4bfe
https://hal.archives-ouvertes.fr/hal-02752469/document