Thermal Shock and High Temperature Wear Behaviors of SHM1302 Hard-Faced Layer by FEI Yanmin, WU Rufei, LI Qi, GAO Anyang, SI Tingzhi

“…To evaluate the high temperature application range of SHM1302 hard surface layer， the thermal shock resistance and high temperature wear resistance of SHM1302 hard surface layer were tested respectively， and the thermal shock and high temperature wear behavior of hard surface layer were investigated by X-ray diffraction (XRD)， scanning electron microscopy (SEM)， energy dispersive X-ray spectroscopy(EDX) and other characterization methods.In addition， the relationship between high-temperature oxidation / microstructure transformation and thermal shock / high-temperature wear behavior was established.Results showed that the initiation and propagation of SHM1302 thermal shock cracks were affected by the combined effects of stress and oxidation， and the cracks mainly propagated along the interface between matrix and carbide.With the thermal shock cycle，the formation of harmful phase of MnFe2O4 in the oxide film and the precipitation of (Fe，Cr)3C in the matrix promoted the expansion of thermal shock cracks.At 500 ℃， the hard surface had good high temperature wear performance.The wear at 600 ℃and 700 ℃was significantly increased by 1 244%and 1 596%compared with 500 ℃.When the wear temperature increased from 500 ℃to 600 ℃， the increase of oxidation rate and the formation of harmful phase MnFe2O4 were the key factors for the rapid decline of wear performance.Furthermore， the M ⇌A structure transformation at 700 ℃promoted the initiation of fatigue cracks and further accelerated the wear process.…”
Get full text

Synergistic enhancement of recycled aggregate concrete using hybrid natural-synthetic fiber reinforcement and silica fume by Danish Akbar, Faisal Shabbir, Ali Raza, Nabil Ben Kahla

“…Microstructural and mineralogical characterizations were performed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). …”
Get full text

Contrasting effects of Si on high-temperature deformation behavior and room-temperature strength in V-microalloyed 10Mn-18Cr stainless steels by Atef Hamada, Ali Khosravifard, Khaled Elanany, Mahmoud Khedr, Anna Kisko, Matias Jaskari, Saad Ebied, Tarek Allam, Antti Järvenpää, Pentti Karjalainen

“…Microstructural analysis of the hot-rolled and FH annealed structures was conducted using electron backscatter diffraction and laser scanning confocal microscopy, and precipitation was characterized by transmission electron microscopy. …”
Get full text

Assessment of mechanical and heavy metal leaching behavior of resource-efficient engineered cementitious composites incorporating ultra-high-volume municipal waste incineration bot... by Jun Liu, Yukun Wu, Lei Cheng, Hesong Jin, Jianxin Li, Feng Xing

Get full text

Investigating Plastic Anisotropy of Single and Two-Phase (α₂-Ti₃Al + γ-TiAl) PST-TiAl Through Computational Yield Surface Analysis by Mohammad Rizviul Kabir, Muhammed Bahadir Murat

Get full text

Long-term corrosion behavior of reinforced recycled aggregate concrete under acid rain condition by Omid Bamshad, Iman Hakamian, Mohamad Fallah Shirvani, Alireza Habibi, Mahdi Mahdikhani

Get full text

Sustainable additive manufacturing of recycled RPU/PLA composites via filament extrusion for enhanced mechanical and acoustic properties by Vinoth Kumar Selvaraj, Jeyanthi Subramanian, Ravi Seenivasan, B․G Sai Charan, Bhaherathi S, Aachal Vinayak Kulkarni, Vinod Ayyappan, Sanjay Mavinkere Rangappa, Suchart Siengchin

Get full text

Improved Inconel 718 superalloy repaired performance on 304 stainless steel shafts via recrystallization and Laves phase suppression in hybrid additive-subtractive manufacturing by Yi Li, Junbo Wu, Maoyuan Li, Weiwei Xu, Ruifang Ye, Zhenzhong Wang

“…The HASM process orchestrates multistage thermo-mechanical control through OAFW-LDED/milling cycles, achieving controlled material deposition and unique microstructural evolution via mitigated thermal accumulation, enhanced solidification rates, and localized remelting-recrystallization. …”
Get full text

Research Progress on WC-12Co Coatings Prepared by High Velocity Oxy-Fuel Spraying by SI Yongli, NAN Jian, XIE Liangjun, SONG Shengqiang, DAI Xueting, MU Zhigang, ZOU Junwen

“…High velocity oxy-fuel (HVOF) spraying has been developed as an important technology in surface engineering and remanufacturing to provide materials with protective and functional coatings，thereby ensuring the surface protection of parts and the remanufacturing of damaged products.The preparation of WC-12Co coatings by high velocity oxy-fuel (HVOF) is of great significance in improving the surface wear resistance of substrate materials and prolonging the service life of parts.In this paper， the spray powder， preparation process， control of coating microstructure and properties， flow field numerical simulation， particle deposition behavior， surface protection of engineering materials and posttreatment of HVOF spraying WC-12Co coatings were summarized.The research trends and application prospects of WC-12Co coatings were also prospected， and it was proposed that the evaluation of coating properties and protection， numerical simulation and experimental verification of the spraying process， and engineering application research were worthy of continuous attention.…”
Get full text

AlMgScZr alloys for laser powder bed fusion additive manufacturing. A review by Leandro González-Rovira, Leticia Cabrera-Correa, Juan de Dios López-Castro, Adrián Ojeda-López, F. Javier Botana

“…LPBF-processed AlMgScZr alloys exhibited a unique microstructure comprising equiaxed and columnar grains and achieved isotropic high strength. …”
Get full text

The Development of a New Bioabsorbable Plastically Deformed Mg-Based Composite with Hydroxyapatite Nanopowder Addition: Towards Improved Degradation and Biological Assessment by Zohaib Hassan, Joanna Idaszek, Kamil Kaszyca, Rafał Zybała, Marek Tkocz, Dariusz Kuc, Jarosław Mizera, Anna Dobkowska

“…In this work, the microstructure and degradation properties of a novel metal matrix composite composed of Mg with the addition of 1 vol. % hydroxyapatite nanopowder (Mg + 1 vol % nHAp) were evaluated. …”
Get full text

Mechanical and thermal properties of structural lightweight bamboo fiber-reinforced insulating mortar by Yunyun Tong, Wei Zhang, Mengya Li, Tien Tung Ngo, Qiannan Wang, Wei Zeng, Benyue Li

“…Bamboo fiber-reinforced mortar (BFRM) was evaluated for its microstructural, mechanical, and thermal properties. …”
Get full text

Comprehensive analysis of mechanical characteristics in self-compacting concrete (SCC) with aluminum oxide (Al2O3) nanoparticles and glass fibers: An experimental and analytical in... by Hamed Heidarzad Moghaddam, Mohammad Ali Lotfollahi-Yaghin, Ahmad Maleki

Get full text

Effects of Different Aggregate Gradations and CO₂ Nanobubble Water Concentrations on Mechanical Properties and Damage Behavior of Cemented Backfill Materials by Xiaoxiao Cao, Meimei Feng, Haoran Bai, Taifeng Wu

“…In this study, carbon dioxide nanobubble water (CO₂NBW) was evaluated as an innovative additive for cemented backfill materials (CBMs), and its optimization effect on the mechanical properties and microstructure of the materials was explored. …”
Get full text

An in vitro and in vivo study of biodegradable Zn–Cu–Li alloy with high strength and ductility fabricated by hot extrusion combined with room-temperature ECAP by Jingzhu Duan, Lei Li, Fanglin Cao, Yusong Suo, Qun Yang, Jingong Qin, Xiangjie Wang, Yang Yang

“…Deformation processing is a commonly used strategy to improve the microstructure and hence mechanical properties of biodegradable Zn alloys. …”
Get full text

STORY GRAMMAR AS A STRATEGY FOR ENHANCING NARRATIVE SKILLS IN THE CASE OF L2 ROMANIAN ADULT LEARNERS by Ștefania-Lucia TĂRĂU, Adelina Patricia BĂILĂ, Antonela-Carmen ARIEȘAN-SIMION

“…It aims to give an interpretation across Story Grammar (SG) episodes of three stories from Mercer Mayer’s Frog Stories to track the development of the L2 Romanian oral productions, namely the macrostructure of the Story Grammar (SG) constituents and the microstructure of the temporal, causal, and additive cohesion markers. …”
Get full text

The Design and Microstructure Evolution Mechanism of New Cr_1.3Ni₂TiAl, CoCr_1.5NiTi_1.5Al_0.2, and V_0.3CoCr_1.2NiTi_1.1Al_0.2 Eutectic High-Entropy Alloys by Xin Zhang, Haitao Yan, Yao Xiao, Wenxin Feng, Yangchuan Cai

“…Notably, progressive microstructural evolution was observed, including amplified grain boundary density and the emergence of brittle nanoscale precipitates. …”
Get full text

Texture and grain refinement for enhanced strength and ductility in friction stir welding of cold-rolled thin-strip rapidly solidified AA5182 Al–Mg alloy by Hesam Pouraliakbar, Hamed Jamshidi Aval, Mohammad Reza Jandaghi, Andrew Howells, Mark Gallerneault, Johan Moverare, Vahid Fallah

“…Microstructural analysis reveals significant grain refinement through rolling and FSW, with dynamic recrystallization playing a key role in texture evolution. …”
Get full text

Compression Behaviour of L-PBF-Manufactured Ti6Al4V BCC Lattices by John Daniel Arputharaj, Shahrooz Nafisi, Reza Ghomashchi

“…This study provides critical insights into the interplay between geometric parameters, microstructure evolution, and resultant mechanical properties, contributing to the experimental validation of solid vs. lattice samples fabricated under identical conditions. …”
Get full text

Effect of CO2 pressure on carbon storage−mechanical properties of red mud−fly ash based grouting materials by Guowei WU, Guorui FENG, Jinwen BAI, Yanna HAN, Fan WU, Junbiao MA

Get full text