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pro vyhledávání: '"Peter van Liempt"'
Autor:
Jilt Sietsma, Peter van Liempt
Publikováno v:
Materials Science and Engineering: A. 662:80-87
In this paper a physically based method to determine the yield stress of metals from tensile curves is proposed. The criterion is based on the identification of the transition in dislocation behaviour from limited reversible glide in the pre-yield st
Publikováno v:
Journal of Materials Processing Technology. 228:34-42
The modelling of the hardening behaviour at high temperatures and a range of strain rates is extensively discussed. The hardening behaviour is characterized using tensile tests done in a Gleeble testing machine. The specimen is heated by an electric
Publikováno v:
Materials Science and Engineering: A. 652:7-13
The anelastic model developed in part I of this paper [1] is extended to incorporate the Hall–Petch effect and the thermally activated pre yield phenomena that were revealed in the stress cycling experiments The yield criterion developed in [1] is
Publikováno v:
Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 710
Understanding the intricate structure of dislocations in metals is a major issue in materials science. In this paper we present a comprehensive approach for the characterisation of dislocation networks, resulting in accurate quantification and signif
Publikováno v:
International journal of plasticity, 80, 204-221. Elsevier
In the previous decades much attention has been given on an accurate material description, especially for simulations at the design stage of new models in the automotive industry. Improvements lead to shorter design times and a better tailored use of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af6ba39fbcfb044e7584cf379753f8ce
https://research.utwente.nl/en/publications/41a75671-58b4-4c73-a9e7-c71372e05760
https://research.utwente.nl/en/publications/41a75671-58b4-4c73-a9e7-c71372e05760
Publikováno v:
Acta Materialia, 115
The pre-yield deformation behaviour (i.e., at stresses below the yield stress) of two materials, pure iron and a low-alloy steel, and its anelastic nature are analysed at room temperature, before and after the dislocation structures are varied by pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1b367caac0718a5121f49ba14560aa3
http://resolver.tudelft.nl/uuid:3aeb533e-6433-4794-bb24-c3ddfbddea4c
http://resolver.tudelft.nl/uuid:3aeb533e-6433-4794-bb24-c3ddfbddea4c
Autor:
Carla Barbatti, Jaap Moerman, Jai Prakash Gautam, Leo A.I. Kestens, Alexis Miroux, Peter van Liempt
Publikováno v:
Materials Science Forum. :2722-2727
In the present study non-recrystallisation (Tnr) and Ar3 temperatures have been determined for the C-Mn steels from multi-pass hot torsion experiments with continuous cooling in the temperature range of 1260°C to 600°C. Results show that Tnr decrea
Autor:
Peter van Liempt, Jilt Sietsma
Publikováno v:
Metallurgical and Materials Transactions A. 42:4008-4014
An improved analysis is presented of the stability of plastic deformation under conditions where dynamic strain aging (DSA) occurs, which leads to instabilities known as the Portevin–Le Châtelier (PLC) effect. It is shown that PLC instabilities ca
Publikováno v:
Quantitative InfraRed Thermography Journal. 5:69-80
This article deals with digital filtering techniques to separate heat sources and heat diffusion effects in subsequent infrared images during plastic deformation of metals. Information about the deformation heat as a function of position and time of