Showing papers in "Transactions of Nonferrous Metals Society of China in 2022"

TL;DR: In this paper , a particle flow code (PFC) was applied to examine the mechanical response of a horseshoe-shaped opening in prismatic rock models under biaxial compression, and an improved complex variable method was proposed to derive the stress distribution around the opening.

TL;DR: In this article , the authors provided an overview of recent progress in understanding the degradation mechanism and improving the corrosion resistance and corrosion-wear resistance of materials from bulk metal to surface treatment involving organic coating, metal and its alloy or compound coating.

TL;DR: In this paper , a review of recent advances in micro-alloying design of wrought magnesium alloys from both theoretical and pragmatic perspectives, and fundamental data required for establishing the relationship between chemical composition and mechanical properties of Mg alloys are provided.

TL;DR: In this article , a comprehensive review focuses on the appropriate phase and composition for new Ti alloys intended for use as biomedical implants, emphasizing both fabrication and surface modification methods. But, major characteristics highlighted the importance of elastic modulus and the use of non-toxic metal elements to improve biocompatibility.

TL;DR: In this article , a slow strain rate test results revealed that fine-grained samples exhibit better SCC resistance with a susceptibility index (ISSRT) of 11.2%.

TL;DR: In this paper , the pitting behavior of pure aluminum 1060 exposed to Nansha Islands marine atmosphere for 34 months was investigated based on mass loss measurement, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectrograms (XPS), and electrochemical impedance spectrographs (EIS).

TL;DR: In this article , a pack boriding was performed at 1100 °C for 20 h with 4 wt.% La2O3 to improve the surface performance of TB2 alloy.

TL;DR: In this paper , the thermal stability and mechanical properties of Al−5%Cu (AC) and Al− 5%Cu−0.2Zr% (ACMZ) alloys from 573 to 673 K were systematically studied.

TL;DR: In this paper , a semi-solid 6061 aluminum alloy slurry was prepared by a serpentine channel pouring process and the effects of pouring temperature, bend number and bend diameter on the microstructures were investigated.

TL;DR: In this article , a triaxial welding window was developed for stainless steel interlaced Al 5052−SS 316 explosive clads, considering three operational parameters: standoff distance, explosive mass ratio (mass ratio of the explosive to the flyer plate) and inclination angle.

TL;DR: In this paper , the microstructure was characterized by scanning electron microscopy, electron back-scattered diffraction, and transmission electron microscope, and the mechanical properties were determined by the tensile test, which showed fine recrystallized grains with an average grain size of 1.7 μm.

TL;DR: In this article , the combined depressant CaO and NaHA achieved the selective depression of arsenopyrite, and closed-circuit lab-scale test results indicate that the synergistic effect of CaO+NaHA achieved a satisfactory flotation separation of sphalerite and arsenopsynite, for which the Zn grade and recovery of Zn concentrate were 51.21% and 92.21%.

TL;DR: In this paper , a wall structure was made by cold metal transfer-based wire and arc additive manufacturing using two kinds of ER2319 welding wires with and without Cd elements, and T6 heat treatment was used to improve mechanical properties of these wall structures.

TL;DR: In this paper , a novel forging process of 6082 aluminum alloy is proposed, which can save time and reduce energy consumption while ensuring mechanical properties, and the results showed that this forging process can effectively improve the production efficiency while ensuring the strength after forming.

TL;DR: In this article , Carboxymethyl cellulose (CMC) was introduced as a depressant in reverse flotation separation of quartz from magnesite and the surface properties of both materials were studied by zeta potential tests, atomic force microscopy imaging and contact angle measurements.

TL;DR: In this paper , a non-blasting mechanized mining experiment was carried out with a high-frequency impact hammer, and the daily mining performance was recorded to explore the applicability of the high frequency impact hammer in deep hard rock mines.

TL;DR: In this paper , the metabolism of copper and arsenic in a copper pyrometallurgy process was studied through substance flow analysis method, and some recommendations for improving copper resource efficiency and pollution control were proposed.

TL;DR: A uniform Al-doped LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode material was prepared using a coprecipitation method to take advantage of the positive effect of Al on regenerated NCM (Ni, Co, Mn) cathode materials and ameliorate cumbersome and high-cost impurity removal processes during lithium-ion battery recycling as mentioned in this paper .

TL;DR: In this paper , Nanoporous BiVO4 thin films were deposited using reactive magnetron sputtering in Ar and O2 atmosphere, on various substrates, employing pulsed direct-current (DC) power supplies applied to metallic Bi and V targets for rapid deposition.

TL;DR: In this paper , the effect of Ta addition on solidification microstructure and element segregation of IN617B alloy was investigated by OM, SEM, TEM, EDS, EPMA and thermodynamic calculation.

TL;DR: In this paper , a stoichiometric pressure leaching method was proposed to selectively dissolve Li from spent LiFePO 4 batteries in a stochastic sulfuric acid solution, where O 2 was used as an oxidant and S 2 as a leaching agent.

TL;DR: In this article , a Schiff base (a compound containing a C=N bond) induced anodic Ca-P coating was prepared on AZ31 Mg alloy in a mixed solution of CaCl 2 and KH 2 PO 4 at 60 °C in the presence of glucose and L -cysteine.

TL;DR: In this paper , a new hydrometallurgical process based on the methanesulfonic acid system was proposed to extract the bismuth efficiently from by-products of lead smelting.

TL;DR: In this paper , the microstructure, mechanical properties and wear resistance of SiCp/AZ91 composites were studied, where SiC particles were uniformly distributed in the metal matrix and had a good interface bonding with the metal.

TL;DR: An overview of the research on the electromagnetic interference shielding properties of Mg matrix materials as well as their EMI shielding mechanisms over the past few decades, focused on the influence of alloying, heat treatment, plastic deformation and composite processing, is presented in this paper .

TL;DR: In this paper , the effect of equal-channel angular pressing (ECAP) processing at room temperature and 300 °C on the distribution of the second phase particles and its influence on hardness and electrical conductivity of the commercial Cu−0.81Cr −0.07Zr alloy were investigated.

TL;DR: In this paper , the effect of Nd addition on the microstructure and mechanical properties of as-extruded Mg-9Gd-0.5Zr (wt.%) alloy was investigated.

TL;DR: In this paper , the effect of inhibitor anions on the corrosion behavior of the oxide in Ringer solution was studied, and the results showed that compact, amorphous oxides without pores or cracks were obtained independently of the solution used.

TL;DR: In this paper , a medium entropy alloy (MEA) CrCoNi, cold rolling, asymmetric rolling, cryorolling and asymmetric-cryorolled with subsequent annealing at different temperatures were conducted.