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Materials, Volume 12, Issue 9

May-1 2019 - 212 articles

Cover Story: Shear-transformation zones (STZ) are known to be a characteristic feature of plastic deformation in metallic glasses. Here, the activation of STZs during the unloading phase of a nanoindentation simulation was observed and characterized for the first time. These newly appearing STZs follow the same statistics as the clusters formed during loading. Moreover, during the unloading process, the deactivation of STZs formed during loading was also observed and characterized. Altogether these findings add a new perspective of the unloading mechanism. The figure shows the smallest 1000 STZs formed, ordered by size; the largest cluster is blue and the smallest cluster yellow. View this paper.
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Articles (212)

  • Article
  • Open Access
24 Citations
4,461 Views
20 Pages

13 May 2019

Nanoporous materials have a wide range of applications in clean energy and environmental research. The permeability of nanoporous materials is low, which affects the fluid transport behavior inside the nanopores and thus also affects the performance...

  • Article
  • Open Access
54 Citations
5,466 Views
15 Pages

Physical Hydrogels of Oxidized Polysaccharides and Poly(Vinyl Alcohol) for Wound Dressing Applications

  • Raluca Ioana Baron,
  • Madalina Elena Culica,
  • Gabriela Biliuta,
  • Maria Bercea,
  • Simona Gherman,
  • Daniela Zavastin,
  • Lacramioara Ochiuz,
  • Mihaela Avadanei and
  • Sergiu Coseri

13 May 2019

Two natural polymers, i.e., cellulose and water soluble pullulan, have been selectively oxidized employing the TEMPO-mediated protocol, to allow the introduction of C6-OOH groups. Thereafter, the composite hydrogels of poly(vinyl alcohol) (PVA) and d...

  • Article
  • Open Access
34 Citations
5,252 Views
12 Pages

13 May 2019

Inhibition of residual malignant tumors in patients with colon cancer after operation is one of the difficulties in rehabilitation treatment. At present, using biocompatible materials to remove the copper ion which is the growth dependence of maligna...

  • Article
  • Open Access
6 Citations
3,153 Views
10 Pages

13 May 2019

The fabrication of Ti-aluminide multi-layered composites have attracted great attention for their excellent mechanical properties, such as high specific strength, high specific stiffness, tolerable toughness, and low density. The preparation of the c...

  • Article
  • Open Access
23 Citations
4,109 Views
22 Pages

13 May 2019

Previous studies of alkali-activated slag cement (AASC) using nano-silica have mentioned mostly powdered nano-silica and binder weight replacement methods, which have a rapid decrease in fluidity, a short setting time and a low nano-silica replacemen...

  • Article
  • Open Access
48 Citations
4,788 Views
12 Pages

Key Role of Transfer Layer in Load Dependence of Friction on Hydrogenated Diamond-Like Carbon Films in Humid Air and Vacuum

  • Yunhai Liu,
  • Lei Chen,
  • Bin Zhang,
  • Zhongyue Cao,
  • Pengfei Shi,
  • Yong Peng,
  • Ningning Zhou,
  • Junyan Zhang and
  • Linmao Qian

12 May 2019

The friction of hydrogenated diamond-like carbon (H-DLC) films was evaluated under the controlled environments of humid air and vacuum by varying the applied load. In humid air, there is a threshold applied load below which no obvious friction drop o...

  • Article
  • Open Access
9 Citations
5,515 Views
25 Pages

Ti–Zr–Si–Nb Nanocrystalline Alloys and Metallic Glasses: Assessment on the Structure, Thermal Stability, Corrosion and Mechanical Properties

  • Camelia Gabor,
  • Daniel Cristea,
  • Ioana-Laura Velicu,
  • Tibor Bedo,
  • Andrea Gatto,
  • Elena Bassoli,
  • Bela Varga,
  • Mihai Alin Pop,
  • Victor Geanta and
  • Radu Stefanoiu
  • + 8 authors

12 May 2019

The development of novel Ti-based amorphous or β-phase nanostructured metallic materials could have significant benefits for implant applications, due to improved corrosion and mechanical characteristics (lower Young’s modulus, better wear...

  • Article
  • Open Access
12 Citations
4,251 Views
11 Pages

Cavitation Wear of Basalt-Based Glass Ceramic

  • Marko Pavlovic,
  • Marina Dojcinovic,
  • Radica Prokic-Cvetkovic,
  • Ljubisa Andric,
  • Zoran Ceganjac and
  • Ljiljana Trumbulovic

12 May 2019

This paper examines the possibility of using basalt-based glass ceramics for construction of structural parts of equipment in metallurgy and mining. An ultrasonic vibration method with a stationary sample pursuant to the ASTM G32 standard was used to...

  • Article
  • Open Access
14 Citations
4,151 Views
12 Pages

The Correlation of Microstructure and Mechanical Properties of In-Situ Al-Mg2Si Cast Composite Processed by Equal Channel Angular Pressing

  • Mahdi Chegini,
  • Mohammad Hossein Shaeri,
  • Reza Taghiabadi,
  • Sajjad Chegini and
  • Faramarz Djavanroodi

12 May 2019

In this paper, the effect of equal channel angular pressing (ECAP) on microstructure and mechanical properties of hypereutectic Al-20%Mg2Si and Al-15%Mg2Si, as well as hypoeutectic Al-10%Mg2Si composites has been investigated. After fabricating the c...

  • Article
  • Open Access
18 Citations
3,669 Views
11 Pages

12 May 2019

Deformation of an as-rolled rare earth Mg-2Y-0.6Nd-0.6Zr alloy, at different temperatures, was carried out along the BC (90° anticlockwise rotation of the samples after each ECAP pass) route by equal channel angular pressing (ECAP). The effects o...

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Materials - ISSN 1996-1944