Author
Amarante J. Böttger
Bio: Amarante J. Böttger is an academic researcher from Delft University of Technology. The author has contributed to research in topics: Martensite & Thin film. The author has an hindex of 19, co-authored 73 publications receiving 1549 citations.
Topics: Martensite, Thin film, Grain boundary, Amorphous solid, Tempering
Papers published on a yearly basis
Papers
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315 citations
15 Jul 2015-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, an improved X-ray diffraction line profile analysis method is developed to determine dislocation density of lath martensitic steels, which combines the modified Warren-Averbach (MWA) and the modified Williamson-Hall (MWH) methods.
Abstract: An improved X-ray diffraction line profile analysis method is developed to determine dislocation density of lath martensitic steels. This method combines the modified Warren–Averbach (MWA) and the modified Williamson–Hall (MWH) methods. The developed method is robust and leads to unique values for the dislocation density, the effective outer cut-off radius of the dislocations ( R e ) and the dislocations distribution parameter ( M ). Dislocation structures of lath martensite in a steel, in the as-quenched condition as well as in tempered conditions, are characterized by using the proposed method. The calculated dislocation density is compared with the values obtained from the MWH method by considering a constant value for M . It was found that both methods provide dislocation densities in the range of the values calculated from the dislocation strengthening component of the yield strength.
198 citations
TL;DR: In this article, an optimum post-SLM heat treatment scheme at a temperature below the β transus temperature was proposed based on the understanding of microstructure evolution occurring during subtransus treatment and the resultant mechanical properties of the alloy.
152 citations
TL;DR: A thermodynamic model for solid-state amorphization at interfaces and grain boundaries in binary systems has been proposed and the results obtained agree with experimental data reported in the literature.
Abstract: A thermodynamic model for solid-state amorphization (SSA) at interfaces and grain boundaries in binary systems has been proposed. It has been demonstrated that the energy of a crystalline-amorphous interface is, in general, lower than the energy of a crystalline-crystalline interface. This effect provides the driving force for SSA, as long as the amorphous product layer is not too thick. The model has been applied to several binary crystalline-crystalline systems and binary crystalline-amorphous systems to predict whether or not interface and/or grain boundary amorphization can occur and to calculate the maximum thickness of the amorphous layer. The results obtained agree with experimental data reported in the literature. \textcopyright{} 1996 The American Physical Society.
133 citations
TL;DR: In this paper, the effect of an in situ ultrasonic treatment on the microstructure of low carbon steel (Fe 0.051C-0.002Si−0.045Al) under tensile deformation is reported.
109 citations
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TL;DR: Rationally designed and additively manufactured porous metallic biomaterials based on four different types of triply periodic minimal surfaces that mimic the properties of bone to an unprecedented level of multi-physics detail exhibit an interesting combination of topological, mechanical, and mass transport properties.
492 citations
TL;DR: In this article, the composition and thickness of thin iron-oxide films on pure iron were determined from XPS Fe 2p spectra using a generalization of Tougaard's method.
483 citations
TL;DR: In this paper, X-ray diffraction and transmission electron microscopy experiments are employed to investigate the mechanical stability of retained austenite in a quenching and partitioning steel.
482 citations
TL;DR: In this paper, the authors focus on the following topics: (1) materials requirements in design of aircraft structures and engines, (2) recent advances in the development of aerospace materials, (3) challenges faced by recent aerospace materials and (4) future trends in aerospace materials.
477 citations
TL;DR: In this paper, the applications of three main types of biocompatible metal, namely, stainless steels, cobalt-chromium alloys, and titanium and its alloys are reviewed.
403 citations