Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.8
3.1
Journals
Materials
Special Issues
Microstructure and Performance Evolution Behavior of Materials under Non-equilibrium Solidification...
materials-logo
Submit to Materials Review for Materials Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Microstructure and Performance Evolution Behavior of Materials under Non-equilibrium Solidification Conditions

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 1298

Special Issue Editors

Prof. Dr. Liang Wang

E-Mail Website
Guest Editor
Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: metals and alloys; advanced composites; melting and solidification; additive manufacturing
Dr. Nana Guo

E-Mail Website
Guest Editor Assistant
College of Mechanical Engineering, Shandong University of Technology, Zibo, China
Interests: high entropy alloys; additive manufacturing; high performance and quality coating

Special Issue Information

Dear Colleagues,

Nowadays, high-entropy alloys have been in focus in scientific research as a kind of novel material. As an ancient and advanced technology, solidification plays a very important role in the preparation and forming of these advanced materials. For example, titanium alloys can be smelted to prepare alloy ingots, high-quality titanium alloy powder can be prepared by atomization, and alloy components can be prepared by additive manufacturing methods.

This Special Issue focuses on metallic materials and their composites, studying the influence of the solidification behaviors on the alloy compositions and solidification structures, under different solidification conditions, solidification speeds and melt scales. We aim to study the evolution laws of solidification structures, explore the effect of the solidification process on material properties, and reveal the importance of solidification in the process of material preparation and forming. We kindly invite researchers to contribute to this Special Issue.

Prof. Dr. Liang Wang
Dr. Nana Guo
Guest Editors

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 submissions that pass pre-check are 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 2600 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

  • solidification behavior
  • structure evolution
  • phase and substructure
  • mechanical properties

Published Papers (1 paper)

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

Research

11 pages, 4201 KiB  
Article
Microstructure Evolution and Toughening Mechanism of a Nb-18Si-5HfC Eutectic Alloy Created by Selective Laser Melting
by Longhui Yao, Liang Wang, Xiaojiao Song, Ran Cui, Binqiang Li, Qi Lv, Liangshun Luo, Yanqing Su, Jingjie Guo and Hengzhi Fu
Materials 2022, 15(3), 1190; https://doi.org/10.3390/ma15031190 - 4 Feb 2022
Viewed by 1418
Abstract
Because of their superior mechanical performance at ultra-high temperatures, refractory niobium–silicon-based alloys are attractive high-temperature structural alloys, particularly as structural components in gas turbine engines. However, the development of niobium–silicon-based alloys for applications is limited because of the trade-off between room temperature fracture [...] Read more.
Because of their superior mechanical performance at ultra-high temperatures, refractory niobium–silicon-based alloys are attractive high-temperature structural alloys, particularly as structural components in gas turbine engines. However, the development of niobium–silicon-based alloys for applications is limited because of the trade-off between room temperature fracture toughness and high-temperature strength. Here, we report on the fabrication of a Nb-18Si alloy with dispersion of hafnium carbide (HfC) particles through selective laser melting (SLM). XRD and SEM-BSE were used to examine the effects of scanning speed on the microstructure and the phase structure of the deposited Nb-18Si-5HfC alloy. The results show that when the scanning speed rises, the solid solubility of the solid solution improves, the interlamellar spacing of eutectics slowly decrease into nano-scale magnitude, and the corresponding hafnium carbide distribution becomes more uniform. We also discover the hafnium carbide particles dispersion in the inter-lamella structure, which contributes to its high fracture toughness property of 20.7 MPa∙m1/2 at room temperature. Hardness and fracture toughness are simultaneously improved because of the control of microstructure morphology and carbide distribution. Full article
(This article belongs to the Special Issue Microstructure and Performance Evolution Behavior of Materials under Non-equilibrium Solidification Conditions)
►▼ Show Figures

Figure 1

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