Influence of Reflow Cycles of the Pb–Free/Pb Hybrid Assembly Process on the IMCs Growth Interface of Micro-Solder Joints by Xinyuan He, Qi Zhang, Qiming Cui, Yifan Bai, Lincheng Fu, Zicong Zhao, Chuanhang Zou, Yong Wang

“…However, constrained process compatibility during single or multiple reflow protocols amplifies structural heterogeneity in solder joints and accelerates dynamic microstructural evolution, thereby elevating interfacial reliability risks at solder joint interfaces. …”
Get full text

K-Ar illite-mica age constraints on the formation and reactivation history of the El Doctor fault zone, central Mexico by Diana Elizabeth Garduño-Martínez, Teresa Pi Puig, Jesús Solé, Michelangelo Martini, Jorge René Alcalá-Martínez

“…The mesostructural and microstructural analyses, supported by K-Ar geochronologic data, permitted reconstruct of the crystallization history of phyllosilicate phases related to the tectonic activity of the shear zone. …”
Get full text

Development and functional characterization of melissa essential oil fortified k-carrageenan-based active packaging films by Saurabh Bhatia, Muhammad Jawad, Ahmed Al-Harrasi, Yasir Abbas Shah, Talha Shireen Khan, Esra Koca, Levent Yurdaer Aydemir, Dinu Thomas Thekkuden, Faisal Imam, Naif Al-Harbi

“…Overall, the results indicate a relatively consistent microstructure. The thermal analysis revealed that the increase in MEO concentration leads to a noticeable improvement in the film's thermal stability.…”
Get full text

Bio-inspired widening concrete using cellulose nanofiber to enhance multiscale Fiber–Matrix interface by Kun Wang, Jinjun Guo, Jinjin Wang, Donghui Qi, Yuanxun Zheng, Shaowei Hu

“…Experimental investigations were carried out to assess the bond splitting tensile strength, diagonal shear strength, crack resistance, development of drying shrinkage deformation, and the propagation behavior of restrained shrinkage-induced cracks in both new and old concrete reinforced with single and hybrid combinations of BF, PP fiber, and CNF. The microstructure, phase composition, and pore structure evolution of BF, PP fiber, and CNF-reinforced concrete were observed and analyzed using scanning electron microscopy, thermogravimetric and derivative thermogravimetric analysis, nuclear magnetic resonance, and mercury intrusion porosimetry. …”
Get full text

Acoustic absorption of 3D printed samples at normal incidence and as a duct liner by Jamois Alexis, Dragna Didier, Zieliński Tomasz G., Galland Marie-Annick

“…The materials have a periodic microstructure, consisting either of a single network of spherical or cubic cavities connected by cylindrical channels or of a double-nested network. …”
Get full text

Electric pulse improving the plasticity of the HAl66-6-3-2 alloy by promoting the formation of specific oriented texture by Bobo Lu, Kai Tang, Mingxia Wu, Yi Yang, Gang Yang

“…The study demonstrates EPT can promote the movement of atoms and regulate the microstructure, which is of great significance for the subsequent control of alloy properties.…”
Get full text

Study on acoustic emission characteristics under compression and fractal dimension of pore structure of polyvinyl alcohol fiber engineered cementitious composites by Yueqiang Li, Yueqiang Li, Xin Huang, Yangcan Zhao, Yanyang Qiao

“…ECC developed from brittle damage to ductile damage. In terms of microstructure and durability, ECC with 1% PVA volume content had the best impermeability and pore structure fractal characteristics, and PVA had a great influence on the fractal characteristics of transition pores and capillary pores. …”
Get full text

Effect of acidification on micro structure and adsorption characteristics of coal by Jimin HE, Mei YUAN, Dingling LIU, Weilin TIAN, Lian CHEN, Hongfei CAO

“…To investigate the changes in the microstructure of coal under acidification and the mechanism of their impact on coal adsorption characteristics, low-temperature nitrogen adsorption experiments, infrared spectroscopy experiments, and isothermal adsorption experiments were conducted on coal samples before and after hydrofluoric acid treatment. …”
Get full text

On the Development of an Al4.8 wt% Cu Alloy Obtained from Recycled Aluminum Cans Designed for Thixoforming Process by Ronan Miller Vieira, Gianni Ferreira Alves Moreira, André Itman Filho, Estéfano Aparecido Vieira

“…For alloys designed for thixoforming process, these results are in accordance with what was expected whereas globular microstructure, high ductility, and good performance under cyclic conditions are desirable.…”
Get full text

Massively parallel phase field fracture simulations on supercomputers: towards multi-billion degree-of-freedom computations by Zakaria Chafia, Julien Yvonnet, Jérémy Bleyer, Stéphane Vincent, Simon El Ouafa

“…The methodology is applied to quasi-brittle simulations, involving alternate solving of large linear systems and incremental evolution. The applications presented to illustrate the parallel framework involve crack initiation and propagation in strongly heterogeneous materials with a detailed description of the microstructure. …”
Get full text

Study on Induction Tempering Technology of Escalator Change Gear by Peijie Chen, Guoqing Zeng, Zhengzeng Pan, Xiaopeng Dou, Yongzhi Li

“…By contrastive analysis of the hardness distribution， microstructure， and also the residual stress distribution after tempering， all the above tempering processes are evaluated. …”
Get full text

GH4096 superalloy high-temperature oxidation and corrosion behaviors by Amin Wang, Jingjie Dai, Rui Fu, Hongxia Zhang, Caixia Sun, Dan Li

“…To evaluate the stability and adaptability in complex marine environments, high-temperature oxidation, hot corrosion with NaCl–Na2SO4 deposits, and high-low temperature alternating corrosion behaviors of GH4096 superalloy were investigated in this work, along with the microstructure evolution and corrosion kinetics. …”
Get full text

Insight into the nanoscale strengthening mechanism of polycrystalline iron implanted by Cr ions by Tingting Jiang, Jinyuan Tang, Jiuyue Zhao, Yihao Ling, Yelin Zeng

“…Based on the molecular dynamics (MD) method, the paper aims to explore the nanoscale mechanisms of the polycrystalline iron implanted by Cr ions. The microstructural evolution under implantation is analyzed, and the mechanical properties of different models under nanoindentation are studied. …”
Get full text

Development of a novel constitutive model incorporating phase transformation and dynamic recrystallization effects for laser-assisted machining of Ti6Al4V alloy by Binbin Xu, Xin Liu, Hongguang Liu, Shijia Shi, Yuyang Tang, Jun Zhang

“…These results not only enhance our theoretical understanding of microstructural evolution under extreme conditions but also provide practical guidelines for optimizing machining parameters in high-performance manufacturing systems.…”
Get full text

Minimum energy path of a solute atom diffusing to an edge dislocation core in Al-Mg alloys based on empirical atomic potential by LI Xiao-tong, TANG Xiao-zhi, GUO Ya-fang

“…The transition states of migration confirmed the microstructure changes, depending on the position of the solute atom. …”
Get full text

Deterioration mechanism and stochastic damage modeling of tunnel lining concrete in hydrothermal corrosive environments by Yu Ning, Zhiwei Yan, Yanhua Zeng, Chunwei Zhang, Yucang Dong

“…In order to investigate the coupled effect of high temperature and corrosion on the macroscopic mechanical properties and microstructure of lining concrete, a series of experiments have been conducted, and a new thermal-corrosion damage model has been proposed that can describe the evolution of the mechanical properties of concrete in this particular environment. …”
Get full text

An Automated Decision Support System for Portfolio Allocation Based on Mutual Information and Financial Criteria by Massimiliano Kaucic, Renato Pelessoni, Filippo Piccotto

“…The first criterion is based on mutual information, and it is employed to capture the microstructure of the stock market. The second one is the momentum, and the third is the upside-to-downside beta ratio. …”
Get full text

Effect of Ultrasonic Shot Peening on the Cavitation Erosion Resistance of SLM316L Stainless Steel by WANG Zenan, CHENG Feng, WANG Shuo, SUN Jie

“…In order to investigate the effect of ultrasonic shot peening on the cavitation erosion resistance of SLM316L stainless steel, the surface of SLM316L stainless steel was treated for varying durations (5, 25 and 45 min) using an ultrasonic shot peening apparatus.Subsequently, cavitation tests were conducted on both the untreated and shot-peened samples by means of an ultrasonic vibration device.The phase composition, residual stress, microhardness, surface morphology evolution and micro morphology of the samples were analyzed using X-ray diffraction (XRD), indentation tester, digital microhardness meter, digital 3D video microscope and scanning electron microscopy (SEM).Results showed that the SLM316L stainless steel sample and the ultrasonic shot peening sample exhibited different cavitation behaviors.Residual stresses were introduced into the surface of the samples by ultrasonic shot peening, the surface microstructure was refined, and the surface hardness was enhanced,which led to the mitigation of grain deformation caused by cavitation impacts.As a result,crack initiation was resisted,and cavitation damage was delayed.Additionally, the samples that were subjected to 25 and 45 min of shot peening underwent a transformation from austenite to martensite, and the martensite phase was found to further enhance the cavitation erosion resistance of the shot-peened specimens due to its superior hardening characteristics.The analysis of the weight loss curves and surface morphology during the cavitation process revealed that the 45 min shot-peened sample was found to exhibit the best cavitation erosion resistance.The cavitation erosion resistance of SLM316L stainless steel was effectively improved by the ultrasonic shot peening process, and it was demonstrated that extending the peening duration could further optimize the cavitation erosion resistance of the shot-peened samples.…”
Get full text

Quantitative ultrasound imaging reveals distinct fracture-associated differences in tibial intracortical pore morphology and viscoelastic properties in aged individuals with and wi... by Carolin Dehnen, Angela Galindo, Paula Hoff, Paula Hoff, Oliver Palme, Lukas Maurer, Kay Raum, Edgar Wiebe

“…Cortical Backscatter (CortBS) ultrasound, a radiation-free technique, non-invasively analyzes cortical bone’s viscoelastic and microstructural properties. This study aimed to evaluate CortBS’s discriminative performance in DM patients compared to DXA and characterize changes in cortical bone microstructure in Type 1 and Type 2 DM (T1DM, T2DM) patients.MethodsThis in-vivo study included 89 DM patients (T1DM = 39, T2DM = 48) and 76 age- and sex-matched controls. …”
Get full text

Design and Research on the Preparation of Pervious Concrete Using Carbonized Steel Slag as a Full Component by Xiao Chen, Kai Zhang, Benren Wang, Zhiqiang Wu, Mingkai Zhou

“…The results demonstrate that when CaO and MgO contents reached 5% and 15%, respectively, the 28d compressive strength of mortar increased by 134.49% compared to the reference group. Microstructural analysis confirmed that CaO reacted to form CaCO₃ crystals, while MgO enhanced strength by regulating CaCO₃ crystal morphology to optimize product structure. …”
Get full text