JOM最新文献

{"title":"Study on Microstructure Evolution and Heat Treatment Process of Al-Si-Cu-Mg Cast Alloys Under Two-Step Solution Treatment","authors":"Hao Song,&nbsp;Yaqiang Tian,&nbsp;Keli Liu,&nbsp;Xiaoping Zheng,&nbsp;Yingli Wei,&nbsp;Zhenyu Liu,&nbsp;Runze Zhang,&nbsp;Junsheng Wang,&nbsp;Liansheng Chen,&nbsp;Mingshan Zhang","doi":"10.1007/s11837-025-07156-x","DOIUrl":"10.1007/s11837-025-07156-x","url":null,"abstract":"<div><p>The heat treatment process plays a decisive role in the microstructure and mechanical properties of alloys. However, it is difficult to optimize the heat treatment process of Al-Si-Cu-Mg cast alloys because of the different solubilities of Al₂Cu and Q-Al₅Cu₂Mg₈Si₆. In this study, the parameters of the heat treatment process were optimized by using thermal simulation and experimental, and the microstructure evolution during the solid solution process was studied. The results show that the dissolution temperatures of low melting point eutectic phase Al₂Cu and Q-Al₅Cu₂Mg₈Si₆ are 502°C and 539°C by using DSC. Spherical Al₂Cu phase is easily dissolved, and irregular Al₂Cu phase and Q-Al₅Cu₂Mg₈Si₆ phase are not easily dissolved under the one-step solution treatment. However, the two-step solution treatment makes the Q-Al₅Cu₂Mg₈Si₆ phase dissolve, which improves the solid solution degree of the alloy. The spheroidization degree of eutectic Si is the highest under the optimum one- and two-step solution process. The microhardness was the highest (76.4 ± 1.2 HV, 95.6 ± 2.0 HV). The optimal heat treatment processes are 500°C + 9 h + 170°C + 3 h and 500°C + 9 h + 535°C + 7 h + 170°C + 3 h, and the peak aging hardness is 132.9 ± 1.9 HV and 139.9 ± 2.1 HV, respectively.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 3","pages":"1252 - 1266"},"PeriodicalIF":2.1,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"JOM Technical Topics","authors":"","doi":"10.1007/s11837-025-07229-x","DOIUrl":"10.1007/s11837-025-07229-x","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 3","pages":"972 - 973"},"PeriodicalIF":2.1,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Microstructure, Mechanical, and Tribological Behaviors of AA7075 Reinforced with B4C Composites Developed Through Floating Die","authors":"Ameen Al Njjar,&nbsp;Kamar Mazloum,&nbsp;Amit Sata","doi":"10.1007/s11837-025-07155-y","DOIUrl":"10.1007/s11837-025-07155-y","url":null,"abstract":"<div><p>Aluminum-based matrix composites manufactured through powder metallurgy are seeing growing demand in the aerospace and defense sectors. AA7075 with different weight percentages of B₄C (0%, 5%, 10%, and 15%) were fabricated using a floating die and tested to detect their density, porosity, and mechanical and tribological characteristics. Additionally, the impact of four factors, including B₄C weight percentage (5%, 10%, and 15%), sliding speed (1 m/s, 1.5 m/s, and 2 m/s), load (10 N, 15 N, and 20 N), and sliding distance (500 m, 1000 m, and 1500 m), on the wear characteristics of AA7075/B₄C composites were studied. The design of experiments was conducted using an L9 orthogonal array. The analysis was conducted using response surface methodology, ANOVA, and Taguchi to detect the ideal parameters for reducing the wear. The study unveiled homogeneous distribution and robust matrix-reinforcement interfacial bonding between B₄C and AA7075. Furthermore, the failure models of the composites were uniform across all the specimens. Notably, compared to earlier studies, the composite reinforced with 5% of B₄C exhibited a substantial 18.94% (410 MPa) increase in compressive strength,12.85% reduction in weight (2.49 g/ml), and 88.9% reduction in wear loss (4.01 µm). Additionally, it revealed that sliding distance (68.67%) had the greatest influence on wear loss, ranked next were sliding speed (22.1%), B₄C% (5.75%), and load (3.48). In contrast, the coefficient of friction (COF) was affected by B₄C% (54.95%), and ranked next were sliding distance (22.89%), load (16.75%), and sliding speed (5.41%). The achieved improvements in strength, wear resistance, and weight reduction make the AA7075/5% B₄C composite highly desirable for aerospace, defense, and automotive applications. Additionally, the mathematical models for wear and COF that have been developed in this work reduce time, enhance optimization efficiency, and eliminate the need for costly trials.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 4","pages":"2087 - 2103"},"PeriodicalIF":2.1,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Phase Change Mechanism of Spent LiFePO4 Cathode Material in Regeneration Process","authors":"Jiayi He,&nbsp;Junjie Tang,&nbsp;Yuan Sun,&nbsp;Yizhou Zhou,&nbsp;Pengfei Wang,&nbsp;Fanian Shi","doi":"10.1007/s11837-025-07178-5","DOIUrl":"10.1007/s11837-025-07178-5","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 4","pages":"2177 - 2177"},"PeriodicalIF":2.1,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review of Grain Evolution Effect on Accommodation Mechanism, Modeling, and Processing of Superplastic Titanium Alloys","authors":"Junzhou Yang,&nbsp;Xianjun Wang,&nbsp;Shichen Wang,&nbsp;Zhixuan Wang,&nbsp;Hairui Xing,&nbsp;Kuaishe Wang,&nbsp;Boliang Hu,&nbsp;Li Wang,&nbsp;Peng Dang,&nbsp;Ping Hu","doi":"10.1007/s11837-024-07079-z","DOIUrl":"10.1007/s11837-024-07079-z","url":null,"abstract":"<div><p>The objective of this overview is to elucidate the grain evolution mechanism during the superplastic deformation and manufacturing process. Particular emphasis is placed on the accommodation mechanisms of grain boundary sliding; however, the mechanism of grain rotation has been significantly underestimated. Furthermore, the differing grain refinement mechanisms in superplastic (region II) and near-superplastic (regions II/III to III) conditions may lead to variations in grain size evolution and fracture mechanisms. On the other hand, the grain growth during low-temperature superplastic forming is also influenced by the thermal stability of fine grains, continuous severe plastic deformation processes, and non-uniform grain distribution. This work will guide future research on superplastic deformation mechanisms and grain evolution control in the field of low-temperature superplasticity.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 4","pages":"1923 - 1939"},"PeriodicalIF":2.1,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Machining Mechanism and Wear Mechanism of Composite Coated Tools on CoCrFeNiAl0.6 High Entropy Alloy at High Speed","authors":"Ping Zhang,&nbsp;Shunxiang Wang,&nbsp;Tengfei Zhang,&nbsp;Changyin Lan,&nbsp;Xue Chen","doi":"10.1007/s11837-025-07157-w","DOIUrl":"10.1007/s11837-025-07157-w","url":null,"abstract":"<div><p>This study investigates the cutting and wear mechanisms of coated tools on CoCrFeNiAl0.6 high entropy alloy during high-speed machining. CoCrFeNiAl0.6 alloy, known for its high strength and hardness, presents significant challenges in machining, causing severe tool wear and workpiece damage. This research aims to optimize machining parameters and tool coatings for improved performance and tool life. Finite Element Method simulations and experimental tests were conducted to analyze cutting forces, temperatures, deformation rates, and tool wear under varying cutting speeds, depths, rake angles, and coating types. Cutting forces increased with both cutting depth and coating thickness but decreased with rake angle and speed, with forces reducing up to 10% between 800  mm/s and 1200 mm/s. Multi-layer coatings significantly reduced cutting forces, with TiAlN+TiN+Al₂O₃ coatings experiencing forces around 83% of those with TiAlN coatings. Cutting temperatures rose with cutting depth but decreased with speed; increasing the rake angle or coating thickness initially lowered temperatures but raised them with greater depths, resulting in up to 60% increase in the 0.5–0.7 mm range. Temperature differentials also grew with additional coating layers, with three-layer coatings showing a temperature drop between TiAlN and TiN layers 2.6 times greater than in two-layer coatings. Chip thickness and deformation rates declined with speed and rake angle; TiAlN coatings exhibited the highest deformation rates, while TiN coatings were the lowest, with aluminum additions further raising deformation rates by up to 4%. At a cutting depth of 0.3 mm, wear rates were 1.2 times those at 0.1 mm, increasing with speed and rake angle. For wear rates, single-layer coatings followed the trend TiAlN &gt; Al₂O₃ &gt; TiN, while multi-layer coatings followed TiAlN+Al₂O₃ &gt; TiAlN+TiN &gt; TiAlN+TiN+Al₂O₃. Additional layers reduced wear rates, with three-layered tools achieving only 90% of TiAlN’s wear rate. These findings offer valuable insights into coating design and machining parameters, providing practical guidance for enhancing the efficiency and stability of high-entropy alloy machining.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 3","pages":"1029 - 1043"},"PeriodicalIF":2.1,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Monoclinic ZrO2-Supported Cu/ZnO for Methanol Production from Carbon Dioxide","authors":"Ömer Egemen Bol,&nbsp;Gamze Behmenyar,&nbsp;Mesut Akgün","doi":"10.1007/s11837-025-07200-w","DOIUrl":"10.1007/s11837-025-07200-w","url":null,"abstract":"<div><p>Methanol is produced via syngas, and the catalysts used are based on Cu/Zn/Al. There is no catalyst yet to produce methanol from carbon dioxide with high performance. In this study, zirconia-supported copper/zinc-based catalysts with gallium and lanthanum promoters were synthesized via incipient wetness impregnation (IWI), sol–gel (SG), and deposition–precipitation (DP) with various configurations. The samples were characterized via BET, SEM, H₂-TPR, and XRD and tested for methanol production. On the BET analysis, the samples synthesized via DP method yielded the highest surface area with 51.282 m²/g. H₂-TPR analysis showed that samples were reduced ideally at 250°C. The incipient wetness impregnation method was found to have several disadvantages, while sol–gel and deposition–precipitation methods yielded uniformly dispersed oxide species on the support material, and the copper and zinc species’ particle sizes strongly affected the catalytic performance of the sample as the XRD results indicated. The DP method gave the highest performance in producing methanol, and the 33Cu25Zn3Ga/MZ–DP catalyst sample acquired with the ideal amount of gallium addition as promoter was found to be giving the highest yield of methanol among all the samples (0.329 g <i>g</i>_catalyst⁻¹ h⁻¹) at 250°C, 4 MPa, and 6000 h⁻¹.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 5","pages":"2976 - 2986"},"PeriodicalIF":2.1,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07200-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Improved Mechanical Properties and Corrosion Resistance in LM6 Alloy Through Eutectic Modification","authors":"Pawan Bohane,&nbsp;Suresh Bandi,&nbsp;R. Karthikeyan,&nbsp;Pallavi Deshmukh,&nbsp;Trushar B. Gohil,&nbsp;Ajeet K. Srivastav","doi":"10.1007/s11837-025-07131-6","DOIUrl":"10.1007/s11837-025-07131-6","url":null,"abstract":"<div><p>The present study investigates the effect of microstructure modification on the mechanical properties and corrosion resistance of the near-eutectic LM6 Al-Si alloy. The addition of 130 ppm of Sr significantly modifies the microstructure, transforming the flake-like morphology of eutectic Si into a fine fibrous form, promoting the formation of equiaxial dendrites of α-Al and reducing the size of the flake-like β-phase. These changes result in improved mechanical properties, including an increase in yield strength (106–113 MPa), ultimate tensile strength (155–174 MPa), and elongation (2.6–3.2%). Fractography analysis reveals that the LM6-Sr alloy exhibits a ductile fracture mode, whereas the unmodified LM6 alloy fails in a brittle manner. Despite a slight increase in porosity from 2.8% to 4.7%, the morphological modifications dominate the negative impact of porosity, resulting in an overall increase in mechanical properties. Additionally, the corrosion resistance of the LM6-Sr alloy was significantly improved, with a reduction in corrosion rate from 0.0593 mm/year to 0.0266 mm/year. Electrochemical impedance spectroscopy studies further confirmed enhanced corrosion resistance, showing higher charge transfer resistance (<i>R</i>_ct), oxide resistance (<i>R</i>_ox), and total impedance (<i>Z</i>_mod) for the LM6-Sr alloy.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 3","pages":"1208 - 1219"},"PeriodicalIF":2.1,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Antimony Electrowinning from Copper Electrolyte Waste by Coupling Ion-Exchange Membrane and Mechanical Stirring","authors":"Vicente Schaeffer Vielmo,&nbsp;Júlia Bitencourt Welter,&nbsp;Eduardo Henrique Rotta,&nbsp;Andréa Moura Bernardes,&nbsp;Alvaro Meneguzzi","doi":"10.1007/s11837-025-07203-7","DOIUrl":"10.1007/s11837-025-07203-7","url":null,"abstract":"<div><p>The availability of antimony is limited, as known mineral reserves are estimated at just 2 million tons. To ensure a stable supply of antimony, it is necessary to find alternatives to its primary production. The regeneration of the ion exchange resin, used in controlling impurities in the copper electrolyte, generates a hydrochloric acid waste stream containing approximately 1 g L⁻¹ Sb. Thus, this work investigated the electrowinning of antimony from a synthetic solution emulating this condition in a single-compartment cell as well as in a membrane cell in static and stirring environment. The results demonstrated that using a cationic membrane and mechanical stirring, as a mechanism to improve mass transfer, led to a significant gain in cathodic efficiency associated with higher antimony recovery rates. The optimal condition was found when a current density of 5 mA cm⁻² was imposed for 120 min under stirring, reporting an Sb recovery rate of 80.4% with a cathodic efficiency of 60.9%. Along with the high Sb recovery rate from a copper production byproduct, the proposed electrowinning process avoids generating toxic chlorine gas, highlighting its affinity with circular economy principles and environmental friendliness. The results obtained from this work are an important step towards the development of membrane processes to recover Sb from copper electrorefining waste, which have great application potential.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 4","pages":"2189 - 2196"},"PeriodicalIF":2.1,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Refill Friction Stir Spot Welding of a Graphene-Reinforced AA 6061 Aluminum Alloy","authors":"Tong Wu,&nbsp;Yuding Liu,&nbsp;Shan Ji,&nbsp;Xiaochong Sui,&nbsp;Zhengwei Li","doi":"10.1007/s11837-025-07133-4","DOIUrl":"10.1007/s11837-025-07133-4","url":null,"abstract":"<div><p>Solid-state refill friction stir spot welding (RFSSW) has been used to join a graphene-reinforced AA 6061. The effect of tool rotating speed on the microstructure and mechanical properties of the welded joints was studied, and the results show that RFSSW is suitable to join graphene-reinforced aluminum alloy and that sound joints can be obtained using a wide parameter range. Changing the tool rotating speed from 1600 to 2200 rpm hardly changed the joint cross-section morphology. Like a traditional joint, the graphene-reinforced AA 6061 RFSSW joint can be divided into a heat-affected zone, a thermo-mechanically affected zone, and stir zone, and they all have different grain sizes, orientations, and recrystallization ratios. Compared with the pin-affected zone, the sleeve-affected zone has larger grain sizes, a higher low angle boundary ratio, and a higher recrystallization ratio. The graphene reacts with Mg, forming 974619Mg₂C₃ phase. A higher rotating speed contributes to the joint hardness. The joint lap shear failure load first increases and then decreases with increasing the rotating speed. The maximum failure load of 5178 N was obtained when using 1800 rpm. All the joints present a tensile–shear failure mode.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 3","pages":"1280 - 1291"},"PeriodicalIF":2.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}