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Dear Colleagues,

As the guest editor of the following Special Issue of Materials, I would like to invite you to contribute a research paper to the Issue on the topic of “Improving Alloy Material Performance: Alloy Design and Structural Modification”. The Issue will cover several scientific problems. Among them, the main focus will be aimed at alloy design (new alloys composition, influence of alloying elements on properties of common alloys, and new alloys processing leading to structural changes), a description of the microstructure influence on the improvement of alloy properties (e.g., additive manufacturing, powder metallurgy processing, rapid solidification, and grain boundary engineering), and the new unique properties of alloy materials (e.g., self-reporting materials, self-healing materials, and biodegradable alloys).

I would greatly appreciate a reply to this invitation, letting us know whether you would like to contribute.

We look forward to collaborating with you in the near future.

Dr. Alena Michalcová
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

alloy design
alloy structure
high performance materials
unique properties of materials
structural modification of alloys

Published Papers (1 paper)

Research

Open AccessArticle

Bending Fatigue Behaviors Analysis and Fatigue Life Prediction of 20Cr2Ni4 Gear Steel with Different Stress Concentrations near Non-metallic Inclusions

Zhiguo Xing ,

Zhiyuan Wang ,

Haidou Wang and

Debin Shan

Materials 2019, 12(20), 3443; https://doi.org/10.3390/ma12203443 - 21 Oct 2019

Cited by 1

Abstract

To investigate the relationship between inclusions and bending fatigue behaviors in 20Cr2Ni4 steel under different stress concentrations. This paper designs a new experimental method to prefabricate different size stress concentrations near the inclusions, and then conducts a new type of bending fatigue test to study the inclusions and their surrounding stress distributions in 20Cr2Ni4 steel. A microhardness tester was combined with laser etching equipment to realize the prefabrication of different stress concentrations at arbitrary positions around any inclusion on the gear steel surface. This method provides an experimental basis for the quantitative analysis of the relationship between stress distribution and fatigue life around the inclusions of heavy-duty gear steels. We also predict the bending fatigue lives of heavy-duty gear steels with different types of inclusions, stress states, and spatial distributions. Then, based on the prefabricated notch parameters and the state of inclusions in the steel, a mathematical model of quantitative analysis is proposed, which can accurately predict the fatigue limit of heavy-duty gear steel. The research results can be applied to the actual use of heavy-duty gears and to the accurate life estimation based on the state of gear stress, thereby providing a quantitative reference model for subsequent gear steel production and gear part processing. Full article

(This article belongs to the Special Issue Improving Alloy Material Performance: Alloy design, Structural Modification and Advanced Processing)

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