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Crystals, Volume 12, Issue 7

July 2022 - 137 articles

Cover Story: AA 6086 is a wrought Al-Mg-Si alloy with a tensile strength and elongation exceeding 480 MPa and 10%, respectively. The additions of 0.2 and 1 wt.% Sc strongly reduced the grain size and induced the appearance of the Sc-rich phases AlSc2Si2 and L12-Al3X. Most primary phases dissolved, and different dispersoids formed during homogenization. The distribution of dispersoids was not uniform in the alloy with 0.2% Sc. The large plate-like α-AlMnSi dispersoids and spherical L12 precipitates formed at dendrite centres, while smaller α-AlMnSi and tetragonal t-Al3Zr dispersoids were created elsewhere. The precipitation was slightly delayed during isothermal ageing and shifted to higher temperatures during continuous heating. Scandium did not considerably affect the hardness of the investigated alloy. View this paper
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Articles (137)

  • Article
  • Open Access
2,666 Views
19 Pages

20 July 2022

An orthogonal composite material Ω with fibers consists of a matrix and orthothombic distribution fibers. In addition to the matrix properties, the fiber properties and the fiber volume fraction, the effective (macroscopic) elastic stress&ndash...

  • Article
  • Open Access
7 Citations
3,781 Views
17 Pages

19 July 2022

The polychrome statues of the Sage Mother Hall at the Jinci Temple in Taiyuan city are recognized as one of the three masterpieces of the Jinci Temple. They are also regarded as an outstanding representative of ancient Chinese temple statues. These s...

  • Article
  • Open Access
10 Citations
2,700 Views
14 Pages

Parameters Optimization of Intermediate Band Solar Cells: Cases of PbTe/CdTe, PbSe/ZnTe and InN/GaN Quantum Dots

  • Laura M. Pérez,
  • Asmae EL Aouami,
  • Kawtar Feddi,
  • Vittorianna Tasco,
  • Abdellatif Ben Abdellah,
  • Francis Dujardin,
  • Maykel Courel,
  • Javier A. Riquelme,
  • David Laroze and
  • EL Mustapha Feddi

19 July 2022

Photovoltaic cells, based on quantum dots implementation in the intrinsic region, are one of the most widely studied concepts nowadays to obtain a high solar conversion efficiency. The challenge in this third generation of solar cells is to find a go...

  • Article
  • Open Access
12 Citations
2,660 Views
13 Pages

Effect of Austempering on Mechanical Properties of Nb/V Microalloyed Bainitic Bearing Steel

  • Yanhui Wang,
  • Baisong Liu,
  • Qiang Pan,
  • Jing Zhao,
  • Xiaojia Zhao,
  • Huaqiang Sun,
  • Dong Xu and
  • Zhinan Yang

19 July 2022

In this study, a multi-element microalloyed GCr15Si1MoNbV bainitic bearing steel was designed by adding trace amounts of Nb and V. The bainite/martensite/retained austenite/undissolved carbide multiphase bearing steel with a short heat-treated cycle...

  • Review
  • Open Access
5 Citations
3,896 Views
20 Pages

19 July 2022

Steroid-based liquid crystal polymers and co-polymers have come a long way, with new and significant advances being made every year. This paper reviews some of the recent key developments in steroid-based liquid crystal polymers and co-polymers. It c...

  • Review
  • Open Access
10 Citations
4,890 Views
20 Pages

19 July 2022

This paper reviewed the research progress of studies on the crystal rotation of single crystals that were deformed by tension and shear and the influences of crystal rotation and dislocation evolution on strain hardening behavior in crystals that wer...

  • Article
  • Open Access
2 Citations
2,996 Views
10 Pages

TSFZ Growth of Eu-Substituted Large-Size LSCO Crystals

  • Olesia Voloshyna,
  • Vitaliy V. Romaka,
  • Koushik Karmakar,
  • Silvia Seiro,
  • Andrey Maljuk and
  • Bernd Büchner

18 July 2022

The travelling solvent floating zone (TSFZ) growth of Eu-substituted LSCO (La1.81−xEuxSr0.19CuO4, with nominal x = 0 ÷ 0.4) single crystals was systematically explored for the first time. The substitution of La with Eu considerably decre...

  • Article
  • Open Access
1 Citations
1,945 Views
7 Pages

Trapping Capability of Small Vacancy Clusters in the α-Zr Doped with Alloying Elements: A First-Principles Study

  • Rongjian Pan,
  • Aitao Tang,
  • Jiantao Qin,
  • Tianyuan Xin,
  • Xiaoyong Wu,
  • Bang Wen and
  • Lu Wu

18 July 2022

Zirconium alloys are subjected to a fast neutron flux in nuclear reactors, inducing the creation of a large number of point defects, both vacancy and self-interstitial. These point defects then diffuse and can be trapped by their different sinks or c...

  • Article
  • Open Access
5 Citations
2,131 Views
9 Pages

18 July 2022

Al-8Zn-2Mg-1.5Cu-0.15Sc-0.15Zr alloy with high-strength performance as well as good castability has been developed. In this study, effects of electromagnetic stirring melt treatment (ESMT) on microstructure and mechanical properties of the alloy in t...

  • Article
  • Open Access
5 Citations
4,175 Views
16 Pages

Nanomechanical Characterization of Enzyme Induced Carbonate Precipitates

  • Vinay Krishnan,
  • Hamed Khodadadi Tirkolaei,
  • Maryam Kazembeyki,
  • Leon A. van Paassen,
  • Christian G. Hoover,
  • Jong Seto and
  • Edward Kavazanjian

17 July 2022

The mechanical properties of calcium carbonate minerals formed by enzyme-induced carbonate precipitation (EICP) were studied using nanoindentation. Two types of precipitates were considered: (i) a “baseline” precipitate, synthesized via u...

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Crystals - ISSN 2073-4352