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Micromechanics-based understanding of the stability of film-like austenite in steels 基于微观力学的对钢中膜状奥氏体稳定性的理解
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-26 DOI: 10.1080/02670836.2023.2249746
Gaurav Kumar, T. Bhandakkar, S. Mishra, A. Gokhale
{"title":"Micromechanics-based understanding of the stability of film-like austenite in steels","authors":"Gaurav Kumar, T. Bhandakkar, S. Mishra, A. Gokhale","doi":"10.1080/02670836.2023.2249746","DOIUrl":"https://doi.org/10.1080/02670836.2023.2249746","url":null,"abstract":"Based on the carbon content and processing technique, the austenite morphology in steels can be either film-like or blocky. Experiments have shown that a film-like morphology of austenite shows a higher resistance to strain-induced martensitic transformation than its blocky counterpart. In the present work, using aspect ratio to distinguish austenite morphology, a micromechanical model is developed to show that the presence of an unfavourable stress field discourages the austenite to martensite transformation in film-like morphology, thereby lending its stable nature compared to the blocky version.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"5 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86571605","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}
引用次数: 0
Parameters prediction in additively manufactured Al-Cu alloy using back propagation neural network 基于反向传播神经网络的增材制造Al-Cu合金参数预测
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-23 DOI: 10.1080/02670836.2023.2246772
F. Lyu, Leilei Wang, Jiahao Zhang, Mingzhen Du, Zhiwei Dou, Chuanyun Gao, X. Zhan
{"title":"Parameters prediction in additively manufactured Al-Cu alloy using back propagation neural network","authors":"F. Lyu, Leilei Wang, Jiahao Zhang, Mingzhen Du, Zhiwei Dou, Chuanyun Gao, X. Zhan","doi":"10.1080/02670836.2023.2246772","DOIUrl":"https://doi.org/10.1080/02670836.2023.2246772","url":null,"abstract":"The relationship between tensile strength, wire feeding speed and travel speed is built based on Back Propagation (BP) neural network during the wire arc additive manufacturing (WAAM) process. The introduction of a genetic algorithm for optimising the BP neural network (GA-BP) and incorporation of additional parameter combinations through the forward model markedly enhance the prediction accuracy of the process parameter reverse model. The BP neural network with a genetic algorithm model exhibits excellent training results, and the sample population regression reaches 0.97. An error value of the optimised model is only 3.10% for wire feeding speed prediction, only 1.55% for travel speed prediction. The GA-BP reverse model optimises WAAM process parameters and achieves a tensile strength exceeding 230 MPa.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"14 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83466098","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}
引用次数: 0
Investigation on microstructure and mechanical properties of boron-modified 13Cr5Ni2Mo by powder-pack boriding 粉末包渗硼改性13Cr5Ni2Mo的组织和力学性能研究
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-20 DOI: 10.1080/02670836.2023.2245657
S. Tlili, S. Bouyegh, A. Daoui, A. Guedri, Mohamed Islam Tlili, L. Tairi, M. Djama, R. Graine, Djihad Charmati
{"title":"Investigation on microstructure and mechanical properties of boron-modified 13Cr5Ni2Mo by powder-pack boriding","authors":"S. Tlili, S. Bouyegh, A. Daoui, A. Guedri, Mohamed Islam Tlili, L. Tairi, M. Djama, R. Graine, Djihad Charmati","doi":"10.1080/02670836.2023.2245657","DOIUrl":"https://doi.org/10.1080/02670836.2023.2245657","url":null,"abstract":"ABSTRACT The main objective of the present paper is to investigate the effect of pack boriding treatment at 950°C/4 h on surface 13 Cr supermartensitic stainless steel. Scanning electron microscopy and X-ray diffractometry were used to characterise the grown boride layers microstructures. In addition, we performed 3D profilometry, microhardness measurements, nanoindentation tests with a Berkovich diamond tip, Daimler-Benz Rockwell-C adhesion, and ball-on-disk wear tests in order to evaluate the mechanical properties. After boriding, the phases were found to be iron borides (FeB/Fe2B), chromium borides (CrB), nickel borides (Ni2B), and molybdenum borides (Mo2B). The results showed that the use of the powder-pack boriding process on 13Cr SMSS at 950°C/4 h conducted in the presence of dual phases (FeB/Fe2B) improved the mechanical properties compared to untreated material.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"26 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85870808","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}
引用次数: 2
Tribological behaviours of Mo–Si–B–xTi alloys against Al2O3 ceramic and AISI 52100 steel Mo-Si-B-xTi合金对Al2O3陶瓷和AISI 52100钢的摩擦学行为
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-20 DOI: 10.1080/02670836.2023.2247917
Hui Tan, Wenyuan Chen, Juanjuan Chen, Z. Zhu, Shengyu Zhu, Jun Yang
{"title":"Tribological behaviours of Mo–Si–B–xTi alloys against Al2O3 ceramic and AISI 52100 steel","authors":"Hui Tan, Wenyuan Chen, Juanjuan Chen, Z. Zhu, Shengyu Zhu, Jun Yang","doi":"10.1080/02670836.2023.2247917","DOIUrl":"https://doi.org/10.1080/02670836.2023.2247917","url":null,"abstract":"In this study, the Mo–Si–B alloys containing 10–30 wt% Ti were prepared by spark plasma sintering. The dry sliding tribological properties against Al2O3 ceramic and AISI 52100 steel were thoroughly investigated, and the corresponding wear mechanism was explored. The results indicate that the tribological properties of the MoSiBTi alloys are highly dependent on the Ti content and property of counterpart materials. The dominant wear mechanism of the MoSiBTi alloys sliding against Al2O3 ceramic is severe abrasive and adhesive wear and it transforms to mild abrasive and adhesive wear when coupled with AISI 52100 steel. It confirms that the MoSiBTi/AISI 52100 steel friction pairs show more preferable wear resistance, which is more suitable for room temperature tribological applications.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"42 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77081355","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}
引用次数: 0
Effect of In on Fe phase morphology and properties of Cu-Fe alloy In对Cu-Fe合金Fe相形貌及性能的影响
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-20 DOI: 10.1080/02670836.2023.2246773
Dawei Yuan, Zhenxia Liu, Cheng-jun Guo, Hao Zeng, Jianbo Zhang, Mingmao Li, B. Peng, Bin Yang
{"title":"Effect of In on Fe phase morphology and properties of Cu-Fe alloy","authors":"Dawei Yuan, Zhenxia Liu, Cheng-jun Guo, Hao Zeng, Jianbo Zhang, Mingmao Li, B. Peng, Bin Yang","doi":"10.1080/02670836.2023.2246773","DOIUrl":"https://doi.org/10.1080/02670836.2023.2246773","url":null,"abstract":"ABSTRACT In this paper, Cu-6.2Fe-xIn (x = 0, 0.2, 0.4) alloy was prepared by melting casting and mechanical heat treatment. The Fe phase morphology of Cu-6.2Fe-xIn alloy was observed by SEM, EBSD and TEM. The results show that the addition of In element refines the primary Fe phase and optimises its distribution. After large plastic deformation, the Fe phase was fibrillated and the addition of In refines the Fe fibre and increases its density. The strength of Cu-6.2Fe-0.4In alloy with strain of 7 were 901 MPa, which was 201 MPa higher than that of Cu-6.2Fe alloy. The refining effect of In on the primary Fe phase was the main reason for the significant improvement of the strength of Cu-Fe-In alloy.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"8 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72804414","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}
引用次数: 0
Microstructure and properties change in Al5+xCr12Fe35Mn28-xNi20 high entropy alloys Al5+xCr12Fe35Mn28-xNi20高熵合金的组织和性能变化
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-18 DOI: 10.1080/02670836.2023.2245666
Sally Elkatatny, A. Hamada, Haukang Bian, A. Chiba, M. Gepreel
{"title":"Microstructure and properties change in Al5+xCr12Fe35Mn28-xNi20 high entropy alloys","authors":"Sally Elkatatny, A. Hamada, Haukang Bian, A. Chiba, M. Gepreel","doi":"10.1080/02670836.2023.2245666","DOIUrl":"https://doi.org/10.1080/02670836.2023.2245666","url":null,"abstract":"In the present study, a non-equiatomic AlCrFeMnNi high-entropy alloy (HEA) bearing cost-effective elements has been developed to enhance the strength by increasing the Al content. The HEAs were prepared by employing the arc melting technique. The microstructure of cast HEAs was studied by electron microprobe analysis (EPMA), electron backscattering diffraction (EBSD), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The mechanical properties were evaluated at room temperature. The results show that the latter duplex structure exhibited significantly higher compressive strength, 2.5 GPa at 50% strain. The measured ductility under the tensile stress of the duplex structure was considerably low. This is attributed to the various stress states in compression and tension, the phase structures, and the induced deformation mechanism in the studied HEAs.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"80 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79248841","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}
引用次数: 0
Refining interface compatibility and carrier management via π-π conjugated stacking for efficient and stable perovskite solar cells based on low-temperature processing 基于低温加工的高效稳定钙钛矿太阳能电池的π-π共轭堆叠优化界面兼容性和载流子管理
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-17 DOI: 10.1080/02670836.2023.2246306
Yun Yang
{"title":"Refining interface compatibility and carrier management via π-π conjugated stacking for efficient and stable perovskite solar cells based on low-temperature processing","authors":"Yun Yang","doi":"10.1080/02670836.2023.2246306","DOIUrl":"https://doi.org/10.1080/02670836.2023.2246306","url":null,"abstract":"ABSTRACT Deficiencies and instability in the ETL, perovskite layer, or their interface contribute to carrier nonradiative recombination losses. To address these issues, we propose an electron collection and injection optimisation strategy that focuses on enhancing the compatibility and charge transfer performance at the ETL-perovskite interface. Our approach involves low-temperature modification TiO2 with pyrimidine-2-carboximidamide acetate (PCA) through π-π stacking, reducing the surface energy and improving the interfacial compatibility. At the same time, a stable organic–inorganic hybrid layer is formed with lead iodide (PbI2) below the perovskite layer. Additionally, we demonstrate long-term ambient stability, with the PSCs retaining approximately 90% of their initial PCE after 100 days. We also fabricate large-area modules, achieving an efficiency of 19.53% with an active area of 36.41 cm2. Highlights The introduction of the π-π stacking multifunctional molecule PCA through a low-temperature process to modify TiO2 film enhances the stability and performance of perovskite solar cells. This novel approach improves interfacial compatibility and reduces defects at the interface, enabling vertically aligned crystal growth of perovskite and increasing the interfacial contact area. By effectively removing two types of Hydroxyl groups over the low-temperature TiO2 film through multiple surface chemical reactions, the strategy mitigates nonradiative recombination, leading to reduced energy losses and improved performance in both small and large-area perovskite solar cell modules.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"44 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82878029","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}
引用次数: 0
Hydrogen damage behaviour of X80 steel under high voltage direct current interference 高压直流干扰下X80钢的氢损伤行为
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-17 DOI: 10.1080/02670836.2023.2242722
Wenhui Liu, Wuxi Bi, Jianhua Liu, M. Yan, W. Lan, Yanhui Zhang, Wen Wen, Song-mei Li, Mei Yu
{"title":"Hydrogen damage behaviour of X80 steel under high voltage direct current interference","authors":"Wenhui Liu, Wuxi Bi, Jianhua Liu, M. Yan, W. Lan, Yanhui Zhang, Wen Wen, Song-mei Li, Mei Yu","doi":"10.1080/02670836.2023.2242722","DOIUrl":"https://doi.org/10.1080/02670836.2023.2242722","url":null,"abstract":"In this paper, the hydrogen damage behaviour of X80 steel under HVDC interference was investigated at different sites and applying voltages. The effect of application of a sustained tensile load during the interference testing on the ductility of steel was also studied. It was found that the interference modestly but consistently reduced the elongation of the steel, with dimples still dominating on the fracture surfaces. Application of a sustained tensile load significantly reduced the ductility of the steel, resulting in cleavage fracture dominant on the fracture surfaces on these samples. It also clearly increased the yield strength of the steel. The test results were explained by hydrogen trapping at dislocations and their retardation effect on dislocation movement during the SSRT.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"78 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82632003","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}
引用次数: 0
Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy Al-7.6Si-xZr合金的热化学建模和力学性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-15 DOI: 10.1080/02670836.2023.2245663
Prosanta Biswas, Subhajit Das, Sushil Chandra Das, M. Paliwal, H. Roy, M. K. Mondal
{"title":"Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy","authors":"Prosanta Biswas, Subhajit Das, Sushil Chandra Das, M. Paliwal, H. Roy, M. K. Mondal","doi":"10.1080/02670836.2023.2245663","DOIUrl":"https://doi.org/10.1080/02670836.2023.2245663","url":null,"abstract":"This study utilised the gravity casting method to modify hypoeutectic Al-7.6Si alloys with Zr at varying weight percentages (0.1%, 0.2%, and 0.3%). The unmodified alloy typically consists of a needle or platelike eutectic silicon within the dendritic α-Al phase. The addition of Zr increases the liquidus temperature of the alloy and results in the formation of ZrSi and ZrSi2 compounds, which act as nucleation sites for both the eutectic Si and α-Al grains. As a result, the needle or platelike eutectic silicon transforms into a fibrous structure with a more uniform distribution, and the α-Al phase becomes finer and globular. These microstructural changes lead to improved bulk hardness, ductility, and mechanical properties of the alloy.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"46 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89343833","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}
引用次数: 0
The densification, microstructure, and mechanical properties of (TiB2+SiC)/AlSi10Mg composites manufactured by LPBF LPBF法制备(TiB2+SiC)/AlSi10Mg复合材料的致密化、显微组织和力学性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-10 DOI: 10.1080/02670836.2023.2244354
B. Dang, Zhao Zhang, Kan Li, Yan Chen, Junfeng Xu, Z. Jian
{"title":"The densification, microstructure, and mechanical properties of (TiB2+SiC)/AlSi10Mg composites manufactured by LPBF","authors":"B. Dang, Zhao Zhang, Kan Li, Yan Chen, Junfeng Xu, Z. Jian","doi":"10.1080/02670836.2023.2244354","DOIUrl":"https://doi.org/10.1080/02670836.2023.2244354","url":null,"abstract":"Herein, the (TiB2 + SiC)/AlSi10Mg composites were prepared using a planetary ball mill and fabricated by the LPBF technique. The effects of nano-TiB2 particles and laser power on the densification, microstructure, and mechanical properties of the LPBFed (TiB2 + SiC)/AlSi10Mg composites were investigated. The densification and mechanical properties of composites increase first and then decrease with increasing laser power and nano-TiB2 particle content. Under the optimal processing parameters and nano-TiB2 particle content, 98.3% relative densification of the LPBFed composites was achieved. The LPBFed (TiB2 + SiC)/AlSi10Mg composites had superior mechanical properties, including a tensile strength of 452.8 MPa, a yield strength of 217.2 MPa, and an elongation of 4.33% (increases of 30.8%, 14.3%, and 90.7%, respectively), and the maximum microhardness of 126.7 HV (increase of 6.1%).","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91189448","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}
引用次数: 0
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