Design, Phase Transformation and Mechanical Properties of Titanium Alloy, 2nd Edition

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (25 February 2025) | Viewed by 1074

Special Issue Editor


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Guest Editor
Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Interests: phase transformation and mechanical behavior of titanium alloys; design and development of high-performance Mg- and Al-based alloys; processing, microstructure, and mechanical properties of light metallic materials
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Special Issue Information

Dear Colleagues,

Titanium alloys are promising structural and functional materials in aerospace and civil applications owing to their highly tailorable mechanical properties associated with chemical compositions and diverse microstructures. In recent years, increasing interest has been devoted to the design and fabrication of high-performance Ti alloys with high strength, high ductility, low Young’s modulus, shape memory, and superelasticity. As Ti alloys act as both a low-weight metallic material and smart material with shape memory properties and a low elastic modulus, the research and development of both available and new Ti alloys are vital for Ti society. This Special Issue explores the design, phase transformation, microstructure evolution, deformation behavior, and mechanical properties of Ti alloys in order to shed light on titanium research.

Articles concerning the design, processing, and mechanical properties of Ti alloys, as well as their deformation mechanisms, are welcome. This Special Issue will cover—but is not limited to—the following fundamental and applied research topics:

  • Alloy design;
  • Thermal–mechanical processing;
  • Post-heat treatment;
  • Precipitation;
  • Microstructure evolution;
  • Deformation behavior;
  • Deformation mechanism;
  • Mechanical properties;
  • Shape memory;
  • Superelasticity;
  • Simulation;
  • Additive manufacturing;
  • Metastable phases;
  • Martensitic transformation;
  • Biomedical applications;
  • Advanced characterization.

Dr. Wenlong Xiao
Guest Editor

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Keywords

  • alloy design
  • thermal–mechanical processing
  • post-heat treatment
  • precipitation
  • microstructure evolution
  • deformation behavior
  • deformation mechanism
  • mechanical properties
  • shape memory
  • superelasticity
  • simulation
  • additive manufacturing
  • metastable phases
  • martensitic transformation
  • biomedical applications
  • advanced characterization

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Published Papers (1 paper)

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Research

19 pages, 8417 KiB  
Article
Effect of Nb and Si Content on Phase Stability, Microstructure and Mechanical Properties of Sintered Ti–Nb–Si Alloys
by Derek Manoel Luup Carvalho, Deivison Daros Paim, Isadora Schramm Deschamps, Claudio Aguilar, Aloísio Nelmo Klein, Francisco Cavilha Neto, Guilherme Oliveira Neves and Cristiano Binder
Metals 2025, 15(1), 34; https://doi.org/10.3390/met15010034 - 3 Jan 2025
Viewed by 760
Abstract
The development of beta titanium alloys with biocompatible elements to replace Al and V is a subject of significant interest in the biomedical industry. This approach aims to enhance biocompatibility and mitigate potential cytotoxic effects associated with traditional alloying elements. In this work, [...] Read more.
The development of beta titanium alloys with biocompatible elements to replace Al and V is a subject of significant interest in the biomedical industry. This approach aims to enhance biocompatibility and mitigate potential cytotoxic effects associated with traditional alloying elements. In this work, Ti–xNb–ySi alloys were produced using powder metallurgy, with x of 35, 40, and 45 wt.%, and y of 0.10, 0.35, and 0.60% wt.%, using a 32 experimental design. Milling was used to mix and disperse the powders, followed by cold pressing, sintering, and heat treatment. Nb was the main element used to stabilize the β phase, and Si was used to form Si precipitates, although Si also exhibits a β-stabilizing effect. It was found that an increase from 0.10 to 0.35 wt.% of Si improved relative density, with no benefits observed at 0.60 wt.% Si. Electron microscopy showed the presence of β phase grains, and grains with β + α intragranular structures and precipitates. Increasing Nb content resulted in a decrease in ultimate tensile strength while increasing Si content from 0.10% to 0.35 wt.% exhibited the opposite effect. Full article
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