Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.4
2.9
Journals
Metals
Special Issues
Processing and Properties of Bulk Nanostructured Materials
share announcement

Processing and Properties of Bulk Nanostructured Materials

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (30 September 2011) | Viewed by 43155

Special Issue Editors

Dr. Heinz Werner Höppel

E-Mail Website
Guest Editor
Department of Materials Science and Engineering Institute I, Universität Erlangen-Nürnberg, Martensstrasse 5, 91058 Erlangen, Germany
Interests: fatigue mechanisms of metallic materials; mechanical properties and their correlation to microstructure; in-situ deformation; nano-crystalline /ultrafine grained materials; light metals
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Alexander Hartmaier

E-Mail Website
Guest Editor
Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr-Universität Bochum, Stiepeler Str. 129, 44801 Bochum, Germany
Interests: Micromechanical simulation; Prediction of macroscopic materials behaviour; Dislocation dynamics; Large-scale atomistic simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The special issue focuses on the processing of metallic materials by methods of severe plastic deformation (SPD) in order to obtain ultrafine-grained (UFG) microstructures. On the one hand side, emphasis is laid on new developments in severe plastic deformation techniques, including new processing methods, advances in modeling and simulation of the severe plastic deformation processes, prediction of the microstructural evolution during SPD-processing and industrial up-scaling strategies. On the other hand side, the correlation between SPD-processing parameters, the microstructure and the resulting materials properties paired with new approaches in modeling and simulation of UFG-materials behaviour are in focus of this issue. It will cover the interaction between the obtained microstructure and the mechanical properties in UFG materials, strategies to enhance the microstructural stability, new developments of tailoring/grading and functionalization of materials by SPD-processing as well as principal investigations on the deformation mechanisms in UFG materials related to SPD-processing.

Prof. Dr. Alexander Hartmaier
Dr. Heinz W. Höppel
Guest Editors

Keywords

  • Bulk Nanostructured Materials
  • Severe Plastic Deformation
  • Ultrafine-grained / nanocrystalline materials
  • (Mechanical) properties and microstructure
  • Modeling and Simulation
  • Up-scaling of SPD- processes

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

708 KiB  
Article
Martensitic Transformation in Ultrafine-Grained Stainless Steel AISI 304L Under Monotonic and Cyclic Loading
by Andreas Böhner, Thomas Niendorf, Doris Amberger, Heinz Werner Höppel, Mathias Göken and Hans Jürgen Maier
Metals 2012, 2(1), 56-64; https://doi.org/10.3390/met2010056 - 02 Feb 2012
Cited by 13 | Viewed by 7957
Abstract
The monotonic and cyclic deformation behavior of ultrafine-grained metastable austenitic steel AISI 304L, produced by severe plastic deformation, was investigated. Under monotonic loading, the martensitic phase transformation in the ultrafine-grained state is strongly favored. Under cyclic loading, the martensitic transformation behavior is similar [...] Read more.
The monotonic and cyclic deformation behavior of ultrafine-grained metastable austenitic steel AISI 304L, produced by severe plastic deformation, was investigated. Under monotonic loading, the martensitic phase transformation in the ultrafine-grained state is strongly favored. Under cyclic loading, the martensitic transformation behavior is similar to the coarse-grained condition, but the cyclic stress response is three times larger for the ultrafine-grained condition. Full article
(This article belongs to the Special Issue Processing and Properties of Bulk Nanostructured Materials)
►▼ Show Figures

Figure 1

2030 KiB  
Article
Particle Based Alloying by Accumulative Roll Bonding in the System Al-Cu
by Christian W. Schmidt, Patrick Knödler, Heinz Werner Höppel and Mathias Göken
Metals 2011, 1(1), 65-78; https://doi.org/10.3390/met1010065 - 07 Nov 2011
Cited by 19 | Viewed by 9455
Abstract
The formation of alloys by particle reinforcement during accumulative roll bonding (ARB), and subsequent annealing, is introduced on the basis of the binary alloy system Al-Cu, where strength and electrical conductivity are examined in different microstructural states. An ultimate tensile strength (UTS) of [...] Read more.
The formation of alloys by particle reinforcement during accumulative roll bonding (ARB), and subsequent annealing, is introduced on the basis of the binary alloy system Al-Cu, where strength and electrical conductivity are examined in different microstructural states. An ultimate tensile strength (UTS) of 430 MPa for Al with 1.4 vol.% Cu was reached after three ARB cycles, which almost equals UTS of the commercially available Al-Cu alloy AA2017A with a similar copper content. Regarding electrical conductivity, the UFG structure had no significant influence. Alloying of aluminum with copper leads to a linear decrease in conductivity of 0.78 µΩ∙cm/at.% following the Nordheim rule. On the copper-rich side, alloying with aluminum leads to a slight strengthening, but drastically reduces conductivity. A linear decrease of electrical conductivity of 1.19 µΩ∙cm/at.% was obtained. Full article
(This article belongs to the Special Issue Processing and Properties of Bulk Nanostructured Materials)
►▼ Show Figures

Review

Jump to: Research

321 KiB  
Review
The Cyclic Deformation Behavior of Severe Plastic Deformation (SPD) Metals and the Influential Factors
by Charles C. F. Kwan and Zhirui Wang
Metals 2012, 2(1), 41-55; https://doi.org/10.3390/met2010041 - 01 Feb 2012
Cited by 11 | Viewed by 7245
Abstract
A deeper understanding of the mechanical behavior of ultra-fine (UF) and nanocrystalline (NC) grained metals is necessary with the growing interest in using UF and NC grained metals for structural applications. The cyclic deformation response and behavior of UF and NC grained metals [...] Read more.
A deeper understanding of the mechanical behavior of ultra-fine (UF) and nanocrystalline (NC) grained metals is necessary with the growing interest in using UF and NC grained metals for structural applications. The cyclic deformation response and behavior of UF and NC grained metals is one aspect that has been gaining momentum as a major research topic for the past ten years. Severe Plastic Deformation (SPD) materials are often in the spotlight for cyclic deformation studies as they are usually in the form of bulk work pieces and have UF and NC grains. Some well known techniques in the category of SPD processing are High Pressure Torsion (HPT), Equal Channel Angular Pressing (ECAP), and Accumulative Roll-Bonding (ARB). In this report, the literature on the cyclic deformation response and behavior of SPDed metals will be reviewed. The cyclic response of such materials is found to range from cyclic hardening to cyclic softening depending on various factors. Specifically, for SPDed UF grained metals, their behavior has often been associated with the observation of grain coarsening during cycling. Consequently, the many factors that affect the cyclic deformation response of SPDed metals can be summarized into three major aspects: (1) the microstructure stability; (2) the limitation of the cyclic lifespan; and lastly (3) the imposed plastic strain amplitude. Full article
(This article belongs to the Special Issue Processing and Properties of Bulk Nanostructured Materials)
►▼ Show Figures

Figure 1

495 KiB  
Review
Approaches to Modeling of Recrystallization
by Håkan Hallberg
Metals 2011, 1(1), 16-48; https://doi.org/10.3390/met1010016 - 28 Oct 2011
Cited by 136 | Viewed by 17504
Abstract
Control of the material microstructure in terms of the grain size is a key component in tailoring material properties of metals and alloys and in creating functionally graded materials. To exert this control, reliable and efficient modeling and simulation of the recrystallization process [...] Read more.
Control of the material microstructure in terms of the grain size is a key component in tailoring material properties of metals and alloys and in creating functionally graded materials. To exert this control, reliable and efficient modeling and simulation of the recrystallization process whereby the grain size evolves is vital. The present contribution is a review paper, summarizing the current status of various approaches to modeling grain refinement due to recrystallization. The underlying mechanisms of recrystallization are briefly recollected and different simulation methods are discussed. Analytical and empirical models, continuum mechanical models and discrete methods as well as phase field, vertex and level set models of recrystallization will be considered. Such numerical methods have been reviewed previously, but with the present focus on recrystallization modeling and with a rapidly increasing amount of related publications, an updated review is called for. Advantages and disadvantages of the different methods are discussed in terms of applicability, underlying assumptions, physical relevance, implementation issues and computational efficiency. Full article
(This article belongs to the Special Issue Processing and Properties of Bulk Nanostructured Materials)
►▼ Show Figures

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop