Home

Person

Daniele Mari

About
Privacy
Disclaimer

Graph Chatbot

Related publications (57)

Comment on "Origin of low-temperature shoulder internal friction peak of Snoek-Koster peak in a medium carbon high alloyed steel" by Lu et al. [Solid State Communications 195 (2014) 31]

We want to discuss the interpretation of low-temperature shoulder internal friction peak of Snoek-Koster peak (LTS-SK). Lu et al. (2015) [1] attributed it to the interaction between the carbon atoms and twin boundaries in martensite. Nevertheless, the decr ...

Pergamon-Elsevier Science Ltd2016

Finite element modeling of the WC-10 wt.% Co thermal stresses: Build-up and phase specific strain response during cyclic loading

Daniele Mari, Emiliano Campitelli

Several finite element models of the morphology of WC-10 wt.% Co were employed to reproduce the build-up of thermal residual stresses as well as the phase specific strain during loading-unloading in compression. The different models differ only in their ge ...

Elsevier Sci Ltd2015

MECHANICAL SPECTROSCOPY OF ORDERED BINARY Au-Cu

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju

We have studied a binary Au-Cu single crystal by mechanical spectroscopy. Upon very slow cooling from high temperatures, additional relaxation peaks arise at lower frequencies in isothermal spectra after the disappearing of the Zener peak below 665 K due t ...

Polska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pas2015

Special Issue: International Conference On The Science Of Hard Materials-10

Daniele Mari

Elsevier Sci Ltd2015

Grain boundary relaxation in yellow gold bi-crystals

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

The mechanical loss spectrum of a yellow gold bi-crystal is presented and analyzed in detail. The relaxation strength is monitored as a function of several geometrical parameters such as sample width, length and thickness. It is found that the relaxation s ...

Elsevier2015

Comparative study and quantification of cementite decomposition in heavily drawn pearlitic steel wires

Daniele Mari, Aude Marie Agnès Lamontagne

Heavily cold-drawing was performed on a pearlitic steel wire and on an ultra-low carbon (ULC) steel wire in order to highlight and quantify the microstructural changes caused by this type of deformation. Both global techniques (thermoelectric power, electr ...

Elsevier Science Sa2015

GRAIN BOUNDARY RELAXATION IN Bi-CRYSTALS: MECHANICAL SPECTROSCOPY AND MOLECULAR DYNAMICS SIMULATIONS

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

Different Au-Ag-Cu samples have been studied by mechanical spectroscopy. Both polycrystals and bi-crystals show a relaxation peak at 800 K, accompanied by an elastic modulus change. Since this peak is absent in single crystals it is related to the presence ...

Polska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pas2015

High-Precision MRI Reconstruction Algorithm for 3D Sphere Packings

Arnaud Comment, Daniele Mari, Alessandro Luigi Sellerio, Riccardo Balzan

Packings of granular materials are complex systems consisting of large sets of particles interacting via contact forces. Their internal structure is interesting for several theoretical and practical reasons, especially when the model system consists in a l ...

Springer Verlag2015

Identification of the mechanisms responsible for static strain ageing in heavily drawn pearlitic steel wires

Daniele Mari, Aude Marie Agnès Lamontagne

The microstructural changes occurring during drawing and ageing in pearlitic steel wires have been studied using the thermoelectric power (TEP) measurements combined with atom probe tomography (APT) and differential scanning calorimetry (DSC). APT analysis ...

Taylor & Francis Ltd2014

Structural anelasticity, elasticity and broken ergodicity in Ni-Ti shape memory alloys

Daniele Mari

New data are presented on dynamic measurements of elasticity and anelasticity of several poly- and single crystalline Ni1+xTi1-x alloys for frequencies between 0.05 and 100 kHz over a wide temperature range below room temperature. Anelastic effects, previo ...

Pergamon-Elsevier Science Ltd2014

Theoretical modelling of grain boundary anelastic relaxations

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

Grain boundary stress relaxation in Au polycrystals and single crystals has been studied by mechanical spectroscopy. A relaxation peak related to grain boundaries is observed at 620 K. Molecular dynamics simulations on Au are performed in order to illustra ...

Pergamon-Elsevier Science Ltd2014

Recrystallization and grain boundary formation in an 18-carat gold alloy studied by mechanical spectroscopy

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

Heavily deformed 18-carat yellow gold samples show a recrystallization peak at 700 K during the first heating. The mechanical loss spectrum of polycrystals shows a relaxation peak at about 780 K, which is absent in single crystals made from the same alloy. ...

Trans Tech Publications Ltd2013

A link between short-range and long-range properties of random sphere packings

Arnaud Comment, Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio, Riccardo Balzan

We present a high precision particle-by-particle 3D reconstruction of granular systems composed of monodispersed spheres (sphere packings); the experimental approach is based on magnetic resonance imaging techniques. Our measurements revealed a strong corr ...

Springer Berlin Heidelberg2013

Friction and Hertzian contact in granular glass

Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio

We study the jamming process arising in granular systems subjected to decreasing external vibration, which has features similar to the cooling of glass-forming liquids. We modify the friction between grains and observe that jamming occurs 'more easily' for ...

Iop Publishing Ltd2013

New In-Pd mechanical loss peak in ternary gold alloys

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

A point defect relaxation peak has been observed in a ternary 18-carat gold alloy with the composition Au62.5Pd32.5In5. It shows a Curie Weiss dependence on the temperature, as is commonly observed for a Zener peak. However, the peak is absent in the binar ...

Pergamon-Elsevier Science Ltd2013

High temperature transformations in a steel-TiCN cermet

Daniele Mari

The influence of the carbon content on the microstructure, phase transformation and hardness of an iron-based cermet is studied. The cermet is constituted by a high-alloyed steel as matrix, and TiCN particles (50 vol.%) as reinforcement. The material is pr ...

Elsevier Sci Ltd2013

Grain boundary formation stages in a deformed yellow gold single crystal studied by mechanical spectroscopy

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

A monocrystalline 18-carat yellow gold sample is deformed stepwise from 2% to 12% at room temperature. The mechanical loss spectrum is recorded and analysed. At low deformations the exponential high temperature background increases. At a critical deformati ...

Elsevier Science Sa2013

Fractional Brownian motion and anomalous diffusion in vibrated granular materials

Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio

We propose a new approach to the study of diffusion dynamics in vibrated granular systems. The dynamic of a granular material is mainly defined by dry friction interactions. This type of interaction is difficult to model for a large quantity of particles. ...

2012

Grain boundary relaxation and grain growth in 18-carat yellow gold alloy

Robert Schaller, Daniele Mari, Iva Tkalcec Vâju, Ann-Kathrin Audren

A high-temperature anelastic relaxation peak in the mechanical loss spectrum of 18-carat yellow gold polycrystals is analysed and interpreted as due to grain boundary sliding accommodated predominantly by elastic deformation of the grains. The characterist ...

2012

A new MRI reconstruction technique based on real space Hough transform for granular samples

Arnaud Comment, Gérard Gremaud, Daniele Mari, Alessandro Luigi Sellerio, Riccardo Balzan

2012

Page 2 of 3