IF 2.9 3区材料科学

Metals Pub Date : 2024-09-04 DOI: 10.3390/met14091010

Jianyang Han, Huan Zhang, Hongtao Yuan, Xiaoru Zhuo, Xiang Cai, Yanxin Qiao

引用次数: 0

Material Strength Optimization of Dissimilar MIG Welding between Carbon and Stainless Steels 碳钢和不锈钢之间异种 MIG 焊接的材料强度优化

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-04 DOI: 10.3390/met14091011

Hoang Van Huong, Thanh Tan Nguyen, Van-Thuc Nguyen, Van Thanh Tien Nguyen

{"title":"Material Strength Optimization of Dissimilar MIG Welding between Carbon and Stainless Steels","authors":"Hoang Van Huong, Thanh Tan Nguyen, Van-Thuc Nguyen, Van Thanh Tien Nguyen","doi":"10.3390/met14091011","DOIUrl":"https://doi.org/10.3390/met14091011","url":null,"abstract":"This study examines the effects of stick-out, welding current, welding speed, and voltage on the mechanical characteristics and microstructure of MIG welding on SUS 304 stainless steel and S20C steel. The Taguchi method was used to maximize the experiment’s outcomes. Fine columnar dendrites formed at fusion sites, and δ-ferrite phases with dark lines and shapes accumulated between the fusion line and the austenite phases. A welding current of 110 A, voltage of 15 V, welding speed of 500 mm/min, and stick-out of 12 mm were the optimal settings for the ultimate tensile strength (UTS). The UTS value confirmation was 469.4 MPa, which agrees with the estimated value determined using the Taguchi technique. The tensile test revealed that welding current had a far greater impact on mechanical qualities than welding voltage, speed, and stick-out distance. The ideal welding parameters for flexural strength were as follows: stick-out of 12 mm, arc voltage of 15 V, welding speed of 450 mm/min, and welding current of 110 amp. The Taguchi method is useful, as evidenced by the validation of the flexure strength of 1937.45 MPa, which is much greater than the other samples. The impact of the thermal annealing process on the mechanical characteristics of the dissimilar weld joints could be the subject of future research. The investigation results may offer more insightful information about the dissimilar welding field.","PeriodicalId":18461,"journal":{"name":"Metals","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Point Charge Models for Divalent Metal Cations Targeting Quantum Mechanical Ion–Water Dimer Interactions 以量子力学离子-水二聚体相互作用为目标的二价金属阳离子点电荷模型设计

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-03 DOI: 10.3390/met14091009

Yongguang Zhang, Binghan Wu, Chenyi Lu, Haiyang Zhang

{"title":"Design of Point Charge Models for Divalent Metal Cations Targeting Quantum Mechanical Ion–Water Dimer Interactions","authors":"Yongguang Zhang, Binghan Wu, Chenyi Lu, Haiyang Zhang","doi":"10.3390/met14091009","DOIUrl":"https://doi.org/10.3390/met14091009","url":null,"abstract":"Divalent metal cations are of vital importance in biochemistry and materials science, and their structural and thermodynamic properties in aqueous solution have often been used as targets for the development of ion models. This study presented a strategy for designing nonbonded point charge models of divalent metal cations (Mg2+ and Ca2+) and Cl− by targeting quantum mechanics (QM)-based ion–water dimer interactions. The designed models offered an accurate representation of ion–water interactions in the gas phase and showed reasonable performance for non-targeted properties in aqueous solutions, such as the ion–water oxygen distance (IOD), coordination number (CN), and density and viscosity of MgCl2 and CaCl2 solutions at low concentrations. Our metal cation models yielded considerable overestimates of the hydration free energies (HFEs) of the ions, whereas the Cl− model displayed good performance. Together with the overestimated density and viscosity of the salt solutions, these results indicated the necessity of re-optimizing ion–ion interactions and/or including polarization effects in the design of ion models. The designed Mg2+ model was capable of maintaining the crystal metal-binding networks during MD simulation of a metalloprotein, indicating great potential for biomolecular simulations. This work highlighted the potential of QM-based ion models to advance the study of metal ion interactions in biological and material systems.","PeriodicalId":18461,"journal":{"name":"Metals","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure Evolution and Tensile Properties of Medium Manganese Steel Heat Treated by Two-Step Annealing 通过两步退火热处理的中锰钢的微观结构演变和拉伸性能

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-03 DOI: 10.3390/met14091008

Tao Kang, Zhanyu Zhan, Changcheng Wang, Zhengzhi Zhao, Juhua Liang, Lele Yao

{"title":"Microstructure Evolution and Tensile Properties of Medium Manganese Steel Heat Treated by Two-Step Annealing","authors":"Tao Kang, Zhanyu Zhan, Changcheng Wang, Zhengzhi Zhao, Juhua Liang, Lele Yao","doi":"10.3390/met14091008","DOIUrl":"https://doi.org/10.3390/met14091008","url":null,"abstract":"In this paper, the nucleation and growth of austenite are controlled through a two-step annealing process to achieve multi-scale distribution and content increase of retained austenite in low manganese series medium-Mn steel. Combining SEM, EBSD, AES, and other experimental equipment, the evolution rules of the microstructure, properties, and element distribution behavior of the test steel during the annealing process are studied. Compared with one-step annealing, the two-step annealing significantly broadens the size distribution range of retained austenite. In the first step, after annealing at a higher intercritical temperature (760 °C), the ferrite and the M/A island are obtained, completing the initial partition of Mn and the refinement of microstructures. During the second step of annealing (720 °C), the primary Mn-rich martensite region provides higher nucleation driving force and finer dispersed nucleation sites, promoting the nucleation and growth of reverse transformation austenite. At the same time, the metastable-retained austenite formed after the first step of annealing continues to grow through interface movement. Furthermore, a high proportion (23.4%) of retained austenite with multi-scale distribution is formed in the final microstructure, and the product of strength and elongation increased from 21.8 GPa·% by the one-step annealing process to 30.1 GPa·%.","PeriodicalId":18461,"journal":{"name":"Metals","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluid Dynamics Studies on Bottom Liquid Detachment from a Rising Bubble Crossing a Liquid–Liquid Interface 关于上升气泡穿越液-液界面时底部液体脱离的流体动力学研究

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-02 DOI: 10.3390/met14091005

Xiangfeng Cheng, Gele Qing, Zhixing Zhao, Baojun Zhao

{"title":"Fluid Dynamics Studies on Bottom Liquid Detachment from a Rising Bubble Crossing a Liquid–Liquid Interface","authors":"Xiangfeng Cheng, Gele Qing, Zhixing Zhao, Baojun Zhao","doi":"10.3390/met14091005","DOIUrl":"https://doi.org/10.3390/met14091005","url":null,"abstract":"The detachment regimes and corresponding detachment height of lower liquid from a coated bubble during the bubble passage through an immiscible liquid–liquid interface were studied. High-speed imaging techniques were used to visualize the lower liquid detachment from a rising bubble near the interface. Analysis of industrial slag samples by a scanning electron microscope (SEM) was also carried out. The results indicate that the detachment height of lower liquid from a rising bubble showed a distinct correlation to penetration regimes. Bubble size and a fluid’s physical properties exerted a significant influence on the detachment height of the lower liquid. The detachment height for medium bubbles (Weber number: 4~4.5; Bond number: 2.5~7.5) varied significantly with increasing bubble size, which contributes to the lower liquid entrainment in the upper phase due, significantly, to the higher detachment height and large entrainment volume. The maximum detachment height for large bubbles is limited to approximately 100 mm due to the early detachment with the liquid column at the interface though large bubbles transporting a larger volume of lower liquid into the upper phase.","PeriodicalId":18461,"journal":{"name":"Metals","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of Welding Parameters on the Welding Strength of High Borosilicate Glass and Aluminum Alloy 焊接参数对高硼硅玻璃和铝合金焊接强度的影响

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-02 DOI: 10.3390/met14091001

Changjun Chen, Jian Tang, Min Zhang, Wei Zhang

引用次数: 0

Effect of Fe Element and Ultrasonic Vibration on the Microstructure and Mechanical Properties of the Cu-TiB2 Composites 铁元素和超声振动对铜-钛硼复合材料微观结构和力学性能的影响

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-02 DOI: 10.3390/met14091007

Siruo Zhang, Guanglong Li, Cunhu Duan, Yingdong Qu, Min Cheng, Shulin Dong

{"title":"Effect of Fe Element and Ultrasonic Vibration on the Microstructure and Mechanical Properties of the Cu-TiB2 Composites","authors":"Siruo Zhang, Guanglong Li, Cunhu Duan, Yingdong Qu, Min Cheng, Shulin Dong","doi":"10.3390/met14091007","DOIUrl":"https://doi.org/10.3390/met14091007","url":null,"abstract":"Cu-(Fe-Ti)-TiB2 composites were prepared by in situ reaction and vacuum casting with and without ultrasonic vibration. The evolution of the microstructure and mechanical properties of the composite with the variation in Fe element was analyzed. The import of Fe elements could purify the matrix after in situ reaction and the formation of a nanoprecipitated phase, thus improving the strength of Cu-Fe-Ti-TiB2 composites. Meanwhile, compared with the traditional casting process, the Cu-Fe-Ti-TiB2 composites with ultrasonic vibration treatment exhibit uniform TiB2 particle distribution and better properties. The tensile strength and uniform elongation of the composite with a Fe content of 0.7 wt.% reached 511 MPa and 6.02%, increasing by 14.3% and 318% compared to the unalloyed composite, respectively. The tensile strength and uniform elongation of Cu-0.7Fe-Ti-TiB2 composite with ultrasonic vibration treatment increased to 533 MPa and 7.16%, respectively. The TiB2 microscale particles and Fe2Ti nanoscale precipitates with uniform distribution effectively impeded dislocation movement and recrystallization, which improved the tensile strength and stability at elevated temperatures.","PeriodicalId":18461,"journal":{"name":"Metals","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of Anodic Dissolution of Tungsten in Sulfate–Fluoride Solutions 钨在硫酸盐-氟化物溶液中的阳极溶解机理

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-02 DOI: 10.3390/met14091004

Martin Bojinov, Yoanna Penkova, Iva Betova, Vasil Karastoyanov

引用次数: 0

Influence of Ceramic Size and Morphology on Interface Bonding Properties of TWIP Steel Matrix Composites Produced by Lost-Foam Casting 陶瓷尺寸和形态对失模铸造 TWIP 钢基复合材料界面粘接性能的影响

IF 2.9 3区材料科学

Metals Pub Date : 2024-09-02 DOI: 10.3390/met14091003

Guojin Sun, Xiaoming Liu, Zhenggui Li, Qi Wang

引用次数: 0

Engineering Corrosion Resistance in Magnesium Alloys for Biomedical Applications: A Synergy of Zn/Ca Atomic Ratio and Texture-Based Approach 用于生物医学应用的镁合金抗腐蚀工程：锌/钙原子比与基于纹理的方法的协同作用