Journal ArticleDOI
Electrical resistivity and structural relaxation in Fe75TM5B20 amorphous alloys (TM = Ti, V, Cr, Mn, Co, Ni)
TLDR
The mesure de la resistivite electrique est un moyen tres sensible pour etudier le role effectif de la presence d'un element de transition dans la relaxation structurale.About:
This article is published in Scripta Metallurgica.The article was published on 1984-01-01. It has received 58 citations till now. The article focuses on the topics: Relaxation (physics) & Amorphous metal.read more
Citations
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Journal ArticleDOI
Mechanisms and modeling of cleavage fracture in simulated heat-affected zone microstructures of a high-strength low alloy steel
TL;DR: In this paper, the effect of welding cycle on the fracture toughness properties of high-strength low alloy (HSLA) steels is examined by means of thermal simulation of heat-affected zone (HAZ) microstructures.
Journal ArticleDOI
Calibration of Weibull stress parameters using fracture toughness data
TL;DR: In this article, the Weibull stress model for cleavage fracture of ferritic steels requires calibration of two micromechanics parameters, i.e., m and s. The authors proposed a new calibration scheme for mild structural steel (ASTM A36) which uses toughness values measured under both low and high constraint conditions at the crack front, revealing a strong sensitivity to m and providing the necessary micromemicanical values to conduct defect assessments of flawed structural components operating at or near the calibration temperature in the transition region.
Book ChapterDOI
Development of the local approach to fracture over the past 25 years: Theory and applications
TL;DR: In this paper, a review paper devoted to the local approach to fracture (LAF) for the prediction of the fracture toughness of structural steels is presented, where both ductile rupture and brittle cleavage fracture is considered.
Journal ArticleDOI
A transferability model for brittle fracture including constraint and ductile tearing effects: a probabilistic approach
Claudio Ruggieri,Robert H. Dodds +1 more
TL;DR: In this paper, the Weibull stress σw was adopted as a suitable near-tip parameter to describe the coupling of remote loading with a micromechanics model incorporating the statistics of microcracks.
Journal ArticleDOI
Numerical investigation of 3-D constraint effects on brittle fracture in SE(B) and C(T) specimens
TL;DR: In this article, a 3D non-llinear finite element analysis was employed to conduct an extensive parametric evaluation of crack front stress triaxiality for deep notch SE(B) and C(T) specimens and shallow notch SE (B) specimens, with and without side grooves.
References
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Journal ArticleDOI
Structural defects in amorphous solids A computer simulation study
TL;DR: In this paper, the authors defined structural defects in amorphous solids in terms of the distribution of the internal stresses on the atomic level and of the symmetry of the environment of individual atoms.
Journal ArticleDOI
The enthalpy of formation of solid borides, carbides, nitrides, silicides and phosphides of transition and noble metals
A.K. Niessen,F.R. de Boer +1 more
TL;DR: In this article, a semi-empirical model for the formation of transition and noble metal borides, carbides, nitrides, suicides and phosphides is proposed and compared with the available experimental data.
Journal ArticleDOI
Structural relaxation in metallic glasses
TL;DR: In this article, the authors proposed to use local structural parameters as the order parameters to describe the details of the glassy state, leading to the concept of structural defects, which can be explained very naturally in terms of these defects.
Journal ArticleDOI
Investigation of atomic clustering in aged metallic glasses using positron annihilation methods
H. S. Chen,S. Y. Chuang +1 more
TL;DR: The positron lifetime τ 1 of Pd775Cu6Si165, Fe75P16B6Al3, and Ni75P 16B 6Al3 glass increases from ∼170 ps to a plateau value ∼175 ps immediately following an anneal at 350 K for 30 min with further annealing above 500 K, τ 1 decreases and approaches ∼165 ps as discussed by the authors.
Journal ArticleDOI
Structural relaxation and irreversible changes of electrical resistivity of Fe‐Ni‐Mo‐B amorphous alloys
Paolo Maria Eugenio Icilio Allia,D. Andreone,R. Sato Turtelli,Franco Vinai,Giuseppe Riontino +4 more
TL;DR: In this article, the structural relaxation of amorphous metal alloys with different Mo content was studied through electrical resistivity measurements between the room temperature and the glass transition temperature Tg, and a simple relation between the variation of α after annealing, and the reduction of the alloys free volume was derived and discussed.