Showing papers in "Journal of Materials Science & Technology in 2017"

TL;DR: The first two China Youth Scholars Symposiums on Mg Alloys Research had been held at Harbin (2015) and Chongqing (2016) China, respectively, aiming to boost far-reaching initiatives for development of new Mg-based materials to satisfy the requirements for a broad range of industrial employments as mentioned in this paper.

TL;DR: In this paper, a review and comments of the past work on the factors influencing k in Mg alloys are presented, and the reason for texture effect on k is analyzed based on the mechanism of Hall-Petch relationship.

TL;DR: Friction stir welding (FSW) has achieved remarkable success in the joining and processing of aluminium alloys and other softer structural alloys, however, it has not been entirely successful in the manufacturing of different desired materials essential to meet the sophisticated green globe requirements as discussed by the authors.

TL;DR: In this article, the authors summarized the different processing routes of carbon fiber reinforced ultra-high temperature ceramic (UHTC) composites based on the UHTC introducing methods, including chemical vapor infiltration/deposition (CVI/D), precursor infiltration and pyrolysis (PIP), reactive melt infiltration (RMI), slurry infiltration (SI), in-situ reaction, hot pressing (HP), etc.

TL;DR: In this article, a review of the state-of-the-art and problems for cold spraying as an AM and repairing technique is presented, along with a survey of cold spraying techniques.

TL;DR: In this paper, two new targets on the tensile properties of medium Mn steels have been defined and new designing strategies were put forward for compositions and the processing route to achieve ultra-high ultimate tensile strength without sacrificing formability.

TL;DR: In this article, the authors summarized the recent development of visible light responsive heterojunctions, including the preparation and performances of semiconductor/semiconductor junctions, semiconductor-cocatalyst junctions and surface heterjunctions, and their mechanism for enhanced light harvesting and charge separation/transfer.

TL;DR: In this article, a series of CoCrFeNb x Ni ( x values in molar ratio, x ǫ= 0.25, 0.45,0.75, 1.0 and 1.2) high entropy alloys (HEAs) was prepared to investigate the alloying effect of Nb on the microstructures and mechanical properties.

TL;DR: In this article, the key technical issues in producing large capacity aluminum alloy fuel tanks by using FSW, including tool design, FSW process optimization, nondestructive testing (NDT) techniques and defect repairing techniques, etc.

TL;DR: Friction stir welding (FSW) of steels has reached a new level of technical maturity with the development of reliable welding tools and precise control systems in the past two decades as mentioned in this paper.

TL;DR: In this article, the current understanding and development of friction-stir welding and processing of Ti-6Al-4V alloy are briefly reviewed, focusing on microstructural aspects and microstructure-properties relationship.

TL;DR: In this article, an analytical model is established to study the influence of lattice distortion and fraction of Hf on the yield strength of the BCC TiNbTaZrHf x multi-component high entropy alloys (HEAs).

TL;DR: In this paper, a simple and green co-precipitation method was used to prepare copper oxide-zeolite nanocomposites (CuO-ZEolite NCs).

TL;DR: In this article, the authors comprehensively review the passivating and biofouling behavior, as well as their mechanisms, for typical Ti alloys in various marine environments, and aim to help extend applications of Ti-alloys in extremely harsh marine conditions.

TL;DR: In this paper, the formation of intermetallic compounds (IMCs) in the banded structure (BS) zone and their effect on mechanical properties was investigated, where large quantities of IMCs, in the form of alternating bands of particles or lamellae, were found in the BS zone.

TL;DR: In this paper, the formation mechanisms and control methods of acicular ferrite in HSLA steels were studied, and the effect of austenitizing conditions, continuous cooling rate, and isothermal quenching time and temperature was reviewed.

TL;DR: In this paper, the pitting corrosion of rare earth (RE) Mg alloy GW93 was investigated and it was shown that anodic second phases and enrichment of Cl− in the thick corrosion product films dominate the propagation of pitting.

TL;DR: In this article, a solvothermal method of growth of three different morphologies of zinc oxide nanoparticles (ZnO NPs): i) flower-like nanorod and nanoflakes, ii) assembled hierarchical structure, and iii) nano granule.

TL;DR: A review of the state-of-the-art of defect characterization in bulk metallic materials by positron annihilation spectroscopy is provided in this article, where the authors discuss the recent developments in the field and discuss examples of defect studies of metallic materials.

TL;DR: In this paper, the rotationally accelerated shot peening (RASP) was used to refine the surface layer in pure copper (Cu) with an average grain size of ~85nm.

TL;DR: In this paper, the effect of friction stir processing (FSP) on the pitting corrosion and the intergranular attack of 7075 aluminum alloy was investigated, and three friction stir processed samples were produced by employing a constant tool travel speed of 100mm/min at the rotating speeds of 630, 1000 and 1600 rpm.

TL;DR: In this article, a summary of recent progress in the precipitation behavior and the coarsening mechanism of various precipitates during aging in austenitic steels is made, and various secondary phases are formed under service conditions, like MX carbonitrides, M23C6 carbides, Z phase, sigma phase and Laves phase.

TL;DR: In this article, a new potassium nitrate (KNO3)/diatomite shape-stabilized composite phase change material (SS-CPCM) was prepared by the mixing and sintering method.

TL;DR: In this article, an antibacterial 2205-Cu duplex stainless steel (DSS) was shown to inhibit the formation and growth of corrosive marine biofilms by direct contact with copper-rich phases and the release of Cu2+ ions from the DSS surface.

TL;DR: In this article, the authors aimed at identifying underlying strengthening mechanisms and predicting the yield strength of as-extruded Mg-Zn-Y alloys with varying amounts of yttrium (Y) element.

TL;DR: In this article, an Al-Sc-Zr-based alloy was designed using semisolid extrusion to yield a good trade-off between strength and ductility along with excellent electrical conductivity.

TL;DR: A brief overview of the available approaches based on thermo-mechanical processing technology in producing bimodal microstructure for various metallic materials is given, along with a summary of unusual mechanical properties achievable by BIMODality.

TL;DR: In this paper, the ternary compound PbSxSe1-x was used for solar cells based on highly confined nanocrystals, which were obtained using a one-pot hot injection reaction.

TL;DR: In this article, a facile one-pot strategy is developed to synthesize porous B-doped graphitic carbon nitride (g-C 3 N 4 ) nanosheets by using H 3 BO 3 and urea as the precursor during thermal polymerization.

TL;DR: In this paper, a micro-arc oxidation (MAO)/zinc stearate (ZnSA) composite coating was fabricated via MAO processing and subsequent sealing with electrodeposition of a superhydrophobic ZnSA.