A review on electrodeposition and tribological performance of chromium-based coatings from eco-friendly trivalent chromium baths by Vyacheslav Protsenko

“…These processes enable the production of high-performance coatings with refined microstructures, offering enhanced functional properties and being safer for both human health and the environment. …”
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Study of the Mechanical Properties of a Nanostructured Surface Layer on 316L Stainless Steel by F. C. Lang, Y. M. Xing, J. Zhu, Y. R. Zhao

“…The grains of the surface layer were refined to nanoscale after SNC treatment. Moreover, the microstructure and mechanical properties of NSSL were analyzed with a transmission electron microscope (TEM) and scanning electron microscope (SEM), through nanoindentation, and through reverse analysis of finite element method (FEM). …”
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Study on the Influence of Ca^2＋ and Mg^2＋ on the Properties of Zinc-Manganese Phosphate Coatings by LU Guojian, SUN Shenglong, ZHU Xiaohui, WANG Aixiang

“…With the increasing environmental requirements， the zinc manganese nickel ternary phosphating process is strictly restricted due to nickel pollution， therefore， nickel-free phosphating technology for cathodic electrophoresis is receiving attention.In this study， Ca2＋and Mg2＋were used instead of Ni2＋， and the effects of Ca2＋and Mg2＋on the microstructure， film weight and dissolution rate of the phosphating film formed on cold-rolled plates were analyzed by XRD， SEM and other methods.The matching performance of the phosphating film with cathodic electrophoresis was also tested.It was shown that the grain size was refined by Ca2＋， the film thickness was increased by Mg2＋， and the resistance of the phosphating film to electrophoretic-paint dissolution was improved by the combined addition of Ca2＋and Mg2＋.The new zinc-manganese phosphating solution with added calcium and magnesium ions was found to have stable and controllable ion concentrations.After phosphating electrophoresis， the resulting coating was able to withstand a neutral salt-spray test for 800 h and met the requirement for cathodic electrophoretic coatings of a single-sided extension of 2 mm or less.…”
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EFFECT OF MULTIPLE ULTRASONIC NANOCRYSTAL SURFACE MODIFICATION ON SURFACE INTEGRITY OF 304 STAINLESS STEEL by MA YunRui, LIAN Yang, LI ZhiKun, YE ZhongFei, LI Yang

“…The ultrasonic nanocrystal surface modification(UNSM)technique can build a strengthened layer with good surface integrity on the metal surface,and this layer improves the mechanical properties of metals.The effect of multiple UNSM on the surface integrity of 304 stainless steel was investigated,and a good strengthened layer was obtained.The surface of 304 stainless steel sample was strengthened by multiple UNSM technique,and the strengthened layers with different depths were prepared on the surface of the material.The hardness gradient,residual stress gradient,microstructure gradient and surface morphology of the sample were measured by using the microhardness tester,X⁃ray residual stress analyzer,3D morphometer and metallographic microscope.The results show that the grain size of 304 stainless steel is obviously refined after multiple UNSM treatment,and the thickness of the strengthened layer increases with the increase of treatment times.Comparing with the untreated sample,after two times of UNSM treatment,the residual stress on the surface of the sample increased from-156 MPa to-425 MPa,the depth of residual compressive stress reached 0.7 mm,and the surface microhardness increased from 185 HV0.2 to 350 HV0.2.The results show that the UNSM technology can build a deeper strengthening layer,but it needs to be optimized.…”
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Fracture Mechanism of H13 Steel During Tensile Testing Based on In Situ EBSD by Yunling Li, Dangshen Ma, Hongxiao Chi, Shulan Zhang, Jian Zhou, Jin Cai

“…This paper employs in situ Electron Backscatter Diffraction (EBSD) tensile technology to thoroughly consider the evolution of microstructure, grain size, grain boundary characteristics, orientation differences, and dislocation density of H13 steel during the elastic and plastic stages of room temperature tensile testing. …”
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Effect of Ram Speed on the Integrity of AA6063 Extruded Profile through Porthole Die by V.N.S.U. Viswanat h Ammu, P.M. Padole, A. Agnihotri, Ravikumar Dumpala

“…Subsequently, the profiles produced were aged at 175°C for 6 hours and microstructures were observed. Further, samples drawn from extruded profiles were tested for tensile properties and hardness. …”
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Optimizing ultra high-performance concrete (UHPC) mix proportions using technique for order preference by similarity to ideal solution (TOPSIS) for enhanced performance: Precision... by Sathya Sai Regalla, N. Senthil Kumar

“…Since the early 1990s, researchers globally have explored various approaches to refine the selection of optimal UHPC compositions, addressing criteria such as strength, durability, workability, cost analysis, environmental impact, and microstructural properties. …”
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Simultaneously enhancing the mechanical properties and corrosion resistance in a selective laser melting AZ91 magnesium alloy by hot rolling and subsequent annealing by Li Wang, Shouxin Xia, Qinghang Wang, Xu Qin, Bin Jiang

“…The influence of post-processing hot rolling followed by annealing (RA treatment) on the microstructure and mechanical/corrosion properties of a selective laser melting (SLM) AZ91 magnesium (Mg) alloy was studied. …”
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Copper-Graphene Composite Materials: Manufacturing Technology and Properties by Tomasz MAJEWSKI, Marcin SARZYŃSKI, Judyta SIENKIEWICZ, Jerzy SZAWŁOWSKI, Tomasz BABUL, Sylwester JOŃCZYK

“…P/M compacts and sinters (agglomerates) for the test specimens were made from the proposed mixtures by die pressing and sintering in dissociated ammonia gas. Examples of microstructures and selected test results of material properties are shown for the produced sinters. …”
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A Critical Review of the Technical Characteristics of Recycled Brick Powder and Its Influence on Concrete Properties by Jinkang Hu, Wisal Ahmed, Dengwu Jiao

“…Subsequently, the effects of RBP on various aspects of cement-based materials, such as fresh properties, shrinkage behavior, hydration, microstructure, strength development, and durability, are thoroughly reviewed. …”
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Effect of annealing temperature on La2O3 strengthened Mo–Re alloys by REN Xueting, WANG Guangda, ZHOU Wuping, XIONG Ning

“…Molybdenum rhenium alloys are the solid solution strengthening alloys with high melting point and low expansion coefficient, and the addition of rare earth oxides can refine the grains and play a role in dispersion strengthening. …”
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Effect of Sb，Co，Ni on the Structure of Hot Dip Galvanized Alloy Layer in Zinc Bath by WANG Qiang, ZHU Zhong-xi, YIN Fu-cheng

“…Meanwhile, adding Sb and Co could reduce the thickness of the coating, but the thinning effect was not as good as that with adding Co, the microstructure of which was still silicon reactive structure. …”
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Precise and accurate speed measurements in rapidly flowing dense suspensions by Esmaeel Moghimi, Daniel L. Blair, Jeffrey S. Urbach

“…We find that both approaches exhibit qualitatively similar flow profiles, but a comparative analysis reveals a 15%–25% overestimation in speed measurement using vorticity line scanning, with discrepancies generated by anisotropic suspension microstructure under flow. Moreover, in the thickening regime where complex flow fields are present, both approaches capture local speed fluctuations. …”
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Effect of secondary cold-rolled and annealing on ridging and corrosion properties of 430 ferritic stainless steel by RuiKun Wang, ZeXuan Li, XueZeng Yang, LeFeng Cheng

“…Results demonstrate that secondary cold rolling (80 % deformation) with annealing at 860 °C significantly refines grains and increases γ-fiber weaving. Microstructure optimization increases the grain boundary density and then promotes Cr diffusion, forming a dense Cr2O3-rich passivation film. …”
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Effect of Acid Concentration on Structural, Thermal, and Morphological Properties of Cellulose Nanocrystals from Sugarcane Bagasse and Their Reinforcement in Poly(Furfuryl) Alcohol... by Nduduzo L. Khumalo, Samson M. Mohomane, Thembinkosi D. Malevu, Setumo V. Motloung, Lehlohonolo F. Koao, Tshwafo E. Motaung

“…It is possible to use CNCs to achieve higher mechanical performance while also indicating that optimizing thermal properties and mechanical performance of high-performance materials will require an improved understanding of the microstructural parameters governing the polymer–filler interface. …”
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Effect of rare earth Ce on high temperature oxidation resistance and corrosion resistance of cobalt-based alloys by DING Rui, ZHANG Liang, WU Wenheng

“…The influence of Ce element on high-temperature oxidation resistance and corrosion resistance was systematically discussed. The microstructure and phase composition of the alloys were analyzed by scanning electron microscopy, X-ray diffractometer, high-temperature oxidation weight gain experiment, and electrochemical test. …”
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Carbonation Resistance of Cement-Based Materials Improved by Nitrite by Hao Zhang, Luqing Cheng, Jingsheng Pan, Guodong Xu, Xuyan Shen, Song Mu, Jingshun Cai, Jianzhong Liu, Jinxiang Hong, Zhiqiang Yang, Zhonglai Yi, Huajian Li, Ying Zhou

“…The result indicates that the addition of Ca(NO3)2 improves the carbonation resistance property of cement-based materials if the hydration of cement pastes and microstructure is modified earlier without affecting the late hydration process. …”
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Effect of Ti addition and cast part size on solidification structure and mechanical properties of medium carbon, low alloy cast steel by Nicolás Emanuel Tenaglia, Diego Fernandino, Alejandro Daniel Basso

“…Then, the solidification macrostructure (dendritic pattern and grain size) and microstructure were characterized by using conventional and specific metallographic techniques. …”
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Effect of Nd on Stacking Fault Energy in Pure Copper: A First-Principles and HRTEM Study by Mingyi Zhang, Yang Li, Chongyuan Huang, Puyou Ying, Yong Huan, Chong Zhao, Chi Xiao, Fei Liu

“…Based on first principles, the HRTEM technique and GPA method, the effects of Nd content on the SFE and microstructure of Cu alloys were studied. The results show that the Nd element can significantly reduce the SFE of pure copper. …”
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Hydrogen Reduction of Tellurium Oxide in a Rotary Kiln, Initial Approaches for a Sustainable Process by Hanwen Chung, Semiramis Friedrich, Mengqi Qu, Bernd Friedrich

“…Future work should verify the proposed mechanism and refine operational parameters to maximize efficiency.…”
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