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Crystals
Special Issues
Titanium Alloy and Titanium Matrix Composite
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Titanium Alloy and Titanium Matrix Composite

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 4067

Special Issue Editors

Dr. Yuanfei Han

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: titanium alloys; titanium matrix composite; advanced processing technology for nonferrous alloys; laser additive manufacturing
Dr. Zhonggang Sun

E-Mail Website
Guest Editor
College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210094, China
Interests: titanium and titanium alloys, aluminum and aluminum lithium alloys additive manufacturing, plastic processing, forming
Dr. Hong Li

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Interests: plastic deformation; solid-state bonding; metals and alloys; microstructure characterization; modelling
Prof. Dr. Lechun Xie

E-Mail Website
Guest Editor
Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China
Interests: titanium alloys; titanium matrix composites; additive manufacturing; surface treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Titanium alloys and titanium matrix composites play an increasingly important role as structural materials in the automotive and aerospace fields due to their excellent specific strength, good corrosion resistance, outstanding specific modulus, terrific high temperature strength, and high biocompatibility. The methods for fabrication of titanium and titanium matrix composites include ingot metallurgy, powder metallurgy and additive manufacturing routes, etc. Nevertheless, the preparation of high-performance titanium and titanium matrix composites is still a great challenge, not only due to their inherent poor formality, but also due to the incorporation between ceramic reinforcement/precipitation and titanium matrices, which has become a bottleneck in developing high-performance alloys and compounds. Determining how to design titanium alloys and titanium matrix composites to achieve an optimum combination of strength and toughness is thus an ongoing and fascinating challenge, and it is significant to develop credible design and forming methods. The past decade has witnessed robust momentum in the development of hybrid configuration structures and advanced forming methods, which effectively improve advancements in tensile strength, creep, and fatigue properties. In addition to the existing efforts in realizing application-worthy design and fabrication methods, growing interest in bioinspired and rapid solidification (additive manufacturing) is expected to continue. The present Special Issue on “Titanium Alloys and Titanium Matrix Composites” may become a status report summarizing the progress achieved in the last five years.

Dr. Yuanfei Han
Dr. Zhonggang Sun
Dr. Hong Li
Prof. Dr. Lechun Xie
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. Crystals is an international peer-reviewed open access monthly 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

  • titanium alloys
  • titanium matrix composites
  • metal matrix composites
  • crystals
  • additive manufacturing
  • microstructure
  • mechanical property
  • powder metallurgy
  • diffusion bonding
  • reinforcement
  • forming
  • x-ray diffraction
  • bioinspired strategy
  • strengthening and toughening
  • in situ characterization

Published Papers (2 papers)

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Research

11 pages, 6838 KiB  
Article
Low Cycle Fatigue Behavior of TC21 Titanium Alloy with Bi-Lamellar Basketweave Microstructure
by Baohua Nie, Yu Song, Xianyi Huang, Haiying Qi, Zihua Zhao and Dongchu Chen
Crystals 2022, 12(6), 796; https://doi.org/10.3390/cryst12060796 - 2 Jun 2022
Cited by 6 | Viewed by 1504
Abstract
Low cycle fatigue (LCF) behaviors of TC21 alloy with a bi-lamellar basketweave microstructure were investigated in this paper. The strain fatigue tests were carried out at total strain amplitudes of 1.4% to 2.0%. The cyclic stress response showed the cyclic softening behavior. In [...] Read more.
Low cycle fatigue (LCF) behaviors of TC21 alloy with a bi-lamellar basketweave microstructure were investigated in this paper. The strain fatigue tests were carried out at total strain amplitudes of 1.4% to 2.0%. The cyclic stress response showed the cyclic softening behavior. In addition, the shape of the hysteresis rings exhibited a non-Masing model behavior. The cyclic stress–strain as well as the strain-life equations were obtained. The fatigue life decreased significantly with an increasing total strain from 1.4% to 2.0%. The cyclic softening behavior was interpreted by cyclic back stress and friction stress. Low cycle fatigue cracks were predominantly initiated on the surface of the samples. The relationship between the fatigue sub-critical crack and microstructure was also discussed. The cyclic deformation behavior and crack initiation mechanism were revealed on the basis of the deformation microstructure under different strain amplitudes. Full article
(This article belongs to the Special Issue Titanium Alloy and Titanium Matrix Composite)
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12 pages, 2529 KiB  
Article
The Structure of Lenticular Crystals Formed in Plastically Deformed Titanium Nickelide
by Fedor M. Noskov, Ludmila I. Kveglis, Artur K. Abkaryan and Rimma Y. Sakenova
Crystals 2022, 12(2), 145; https://doi.org/10.3390/cryst12020145 - 20 Jan 2022
Viewed by 1938
Abstract
Samples of Ni51Ti49 alloy subjected to plastic deformation have been studied. The microstructure was studied by transmission electron microscopy and microdifraction on a Hitachi 7700 microscope. The phase composition of the samples was determined by X-ray diffraction in a Bruker [...] Read more.
Samples of Ni51Ti49 alloy subjected to plastic deformation have been studied. The microstructure was studied by transmission electron microscopy and microdifraction on a Hitachi 7700 microscope. The phase composition of the samples was determined by X-ray diffraction in a Bruker diffractometer. Magnetometric measurements were performed in an induction petlescope. Lenticular crystals (of the Ni2Ti3 phase containing bend–extinction contours indicating a significant curvature of the crystal lattice appearing in the localization zones of plastic deformation) were found in the deformation localization zones. It was revealed that the samples are non-magnetic before deformation, but after plastic deformation, they have non-zero magnetization, which is associated with the emergence of new phases. Under conditions of local curvature of the crystal lattice, special structural states arise in zones of increased interatomic distances, which increase the number of degrees of freedom in the deformable solid and thus contribute to the redistribution of the components of the initial solid solution and the appearance of new phases. It was shown that the crystalline structure of lenticular crystals is a phase constructed of a spinel structural type with a crystal lattice parameter of 11.53 ± 0.03 Å. Full article
(This article belongs to the Special Issue Titanium Alloy and Titanium Matrix Composite)
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