✦ LIBER ✦

Solid-state wetting transitions at grain boundaries

✍ Scribed by Paul Wynblatt; Dominique Chatain

Publisher: Elsevier Science
Year: 2008
Tongue: English
Weight: 695 KB
Volume: 495
Category: Article
ISSN: 0921-5093
DOI: 10.1016/j.msea.2007.09.091

No coin nor oath required. For personal study only.

✦ Synopsis

A previously developed model of the dependence of grain boundary (GB) segregation on GB character has been exercised to investigate solidstate wetting transitions at GBs, and their anisotropy. In the case of binary systems displaying a solid-state miscibility gap, it is shown that the wetting transition temperature for precipitates at a GB is anisotropic, and is inversely related to GB energy. The model also allows calculation of prewetting transitions and associated excursions in adsorption off phase coexistence. These transitions are first order below a prewetting critical point (T PWC ), and higher order at temperatures above T PWC . Investigation of the prewetting behavior provides the means for construction of the two-dimensional phase diagram of a GB.

📜 SIMILAR VOLUMES

Wetting transition of grain-boundary tri

Wetting transition of grain-boundary triple junctions

✍ B.B. Straumal; O. Kogtenkova; P. Zięba 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 732 KB

The wetting phase transition of grain boundaries (GBs) and grain-boundary triple junctions (GB TJs) by the melt has been studied in the Al-30 wt.%Zn and Al-10 wt.%Zn-4 wt.%Mg polycrystals. The condition of complete wetting is weaker for TJs (r GB > ffiffi ffi 3 p r SL ) than that for GBs (r GB > 2r

Phase transitions at grain boundaries in

Phase transitions at grain boundaries in the presence of impurities

✍ E.L. Maksimova; E.I. Rabkin; L.S. Shvindlerman; B.B. Straumal 📂 Article 📅 1989 🏛 Elsevier Science ⚖ 448 KB

Phase transitions at grain boundaries have analyzed thermodynamically in two-component systems. Possible types of phase diagrams for grain boundaries in such systems are studied. The effect of the second component on the "special grain boundary-genera1 boundary" phase transition has been examined ex

Pairwise correlations and wetting transi

Pairwise correlations and wetting transitions at a solid-gas interface

✍ P. Tarazona; R. Evans 📂 Article 📅 1983 🏛 Elsevier Science ⚖ 42 KB

Abnormal grain growth induced by sub-bou

Abnormal grain growth induced by sub-boundary-enhanced solid-state wetting: Analysis by phase-field model simulations

✍ Kyung-Jun Ko; Pil-Ryung Cha; David Srolovitz; Nong-Moon Hwang 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 681 KB

Abnormal grain growth (AGG) was approached by a new concept of sub-boundary-enhanced solid-state wetting using a phase-field model (PFM) simulation. If grains have sub-boundaries of very low-energy, they increase the probability of growing by solid-state wetting, compared with other grains of modera

Phase transitions at grain boundaries in

Phase transitions at grain boundaries in WC-Co and internal friction peak analysis

✍ D. Mari; K. Buss; W. Benoit 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 542 KB

The migration of grain-boundary grooves

The migration of grain-boundary grooves at the solid-liquid interface

✍ D.R.H. Jones 📂 Article 📅 1978 🏛 Elsevier Science ⚖ 654 KB

When a solid-liquid interface is intersected by a grain boundary, a grain-boundary groove forms at the interface. Experiments have been carried out using camphene (a transparent analogue of a metal in terms of solidification behaviour) which show that, if the grain boundary is not perpendicular to t