Journal ArticleDOI
Mössbauer analysis of submicrometer grained iron
About:
This article is published in Scripta Metallurgica Et Materialia.The article was published on 1991-12-01. It has received 54 citations till now. The article focuses on the topics: Grain boundary & Nanocrystal.read more
Citations
More filters
Journal ArticleDOI
The process of grain refinement in equal-channel angular pressing
TL;DR: In this article, experiments were conducted on high purity aluminum to investigate the process of grain refinement during equal-channel angular (ECA) pressing, where samples were subjected to 1 to 4 pressings and then sectioned for microstructural examination in three mutually perpendicular directions.
Journal ArticleDOI
An investigation of microstructural stability in an Al-Mg alloy with submicrometer grain size
Jingtao Wang,Yoshinori Iwahashi,Zenji Horita,Minoru Furukawa,Minoru Nemoto,Ruslan Z. Valiev,Terence G. Langdon +6 more
TL;DR: The microstructural stability of an Al 3%Mg solid solution alloy with a submicrometer-grained (SMG) structure (∼ 0.2 μm) was evaluated using both static annealing and transmission electron microscopy over a range of temperatures from 443 to 803 K and differential scanning calorimetry (DSC) up to 773 K.
Journal ArticleDOI
An investigation of microstructure and grain-boundary evolution during ECA pressing of pure aluminum
S. D. Terhune,D.L. Swisher,Keiichiro Oh-ishi,Zenji Horita,Terence G. Langdon,Terry R. McNelley +5 more
TL;DR: In this paper, an equal-channel angular pressing (ECAP) was performed on high purity aluminum (99.99 pct) at room temperature through a die with a 90 deg angle between the die channels.
Journal ArticleDOI
Influence of pressing speed on microstructural development in equal-channel angular pressing
TL;DR: In this article, the influence of pressing speed in equal-channel angular (ECA) pressing was investigated using samples of pure Al and an Al-1 pct Mg alloy and a range of pressing speeds from ∼10−2 to ∼10 mm s−1.
Journal ArticleDOI
Nanotechnologies. Properties and applications of nanostructured materials
TL;DR: In this article, the main methods for the preparation of nanostructured metals, alloys, semiconductors and ceramics are summarised and two different formation mechanisms, namely the assembly principle (bottom-up) and the disintegration principle (top-down), are analysed.
References
More filters
Journal ArticleDOI
Investigation of nanocrystalline iron materials by Mössbauer spectroscopy
TL;DR: In this paper, a two-component Mossbauer spectrum of a nanocrystalline material is investigated, consisting of a crystalline component and an interfacial component, formed by the atoms located either in the crystals or in the interfacial regions between them.
Journal ArticleDOI
Grain boundaries in nanophase palladium: High resolution electron microscopy and image simulation☆
Journal ArticleDOI
Direction of a grain-boundary phase in submicrometre-grained iron
TL;DR: In this paper, two states of Fe atoms with different parameters of the electric and magnetic hyperfine structure have been found to exist in submicrometre-grained iron, one corresponding to a grain boundary phase the parameters of which are related to the physical width of the intercrystalline boundaries.
Journal ArticleDOI
On the Decrease of Curie Temperature in Submicron-Grained Nickel
TL;DR: In this paper, a model of the two-phase structure of a metal is proposed to explain the experimentally deduced decrease of the Curie temperature and saturation magnetization in submicron-grained nickel.