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Classification of defects in additively manufactured nickel alloys using supervised machine learning 利用监督式机器学习对增材制造镍合金缺陷进行分类
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-05-07 DOI: 10.1080/02670836.2023.2207337
Ubaid Aziz, A. Bradshaw, J. Lim, Meurig Thomas
{"title":"Classification of defects in additively manufactured nickel alloys using supervised machine learning","authors":"Ubaid Aziz, A. Bradshaw, J. Lim, Meurig Thomas","doi":"10.1080/02670836.2023.2207337","DOIUrl":"https://doi.org/10.1080/02670836.2023.2207337","url":null,"abstract":"The presence of undesirable microstructural features in additively manufactured components, such as cracks, pores and lack of fusion defects presents a challenge for engineers, particularly if these components are applied in structure-critical applications. Such features might need to be manually classified, counted and their size distributions measured during metallographic evaluation, which is a time-consuming task. In this study, the performance of two supervised machine learning methods (kth-nearest neighbours and decision trees) to automatically classify typical defects found during metallographic examination of additively manufactured nickel alloys is briefly outlined and discussed.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"18 3 1","pages":"2464 - 2468"},"PeriodicalIF":1.8,"publicationDate":"2023-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85566855","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
Research on crack propagation behaviour of nickel-based superalloy under thermal shock load 热冲击载荷下镍基高温合金裂纹扩展行为研究
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-05-04 DOI: 10.1080/02670836.2022.2154932
X. Niu, Rutao Zhao, Zhigang Sun, Yingdong Song, Yaning Chang
{"title":"Research on crack propagation behaviour of nickel-based superalloy under thermal shock load","authors":"X. Niu, Rutao Zhao, Zhigang Sun, Yingdong Song, Yaning Chang","doi":"10.1080/02670836.2022.2154932","DOIUrl":"https://doi.org/10.1080/02670836.2022.2154932","url":null,"abstract":"In this paper, the crack initiation and propagation laws of GH4169 under thermal-shock load were investigated. It was found that the development of main cracks experienced three stages: accelerated growth in the small crack stage, decelerated growth in the long crack stage and finally discontinued growth. With the increase of temperature, the crack initiation life decreases and the propagation rate increases, the crack initiation life at 600°C is six times to that at 700°C. A thermal fatigue crack growth model was proposed to character the whole crack growth process, and a comparison was drawn with the Paris and Z-H model. The results show that the model is applicable to predict the whole process growth rate of thermal fatigue cracks.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"43 1","pages":"1171 - 1179"},"PeriodicalIF":1.8,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84609593","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
Anisotropy of nanoindentation in copper single crystals under different orientations 铜单晶纳米压痕在不同取向下的各向异性
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-05-04 DOI: 10.1080/02670836.2023.2205771
Maohong Yang, Jian-Long Huang, Yulong Liu, W. Yuan, Guiyi Wu, Shuyan Zhang
{"title":"Anisotropy of nanoindentation in copper single crystals under different orientations","authors":"Maohong Yang, Jian-Long Huang, Yulong Liu, W. Yuan, Guiyi Wu, Shuyan Zhang","doi":"10.1080/02670836.2023.2205771","DOIUrl":"https://doi.org/10.1080/02670836.2023.2205771","url":null,"abstract":"The anisotropy of nanoindentation in copper single crystals is studied through experiments and simulations. Nanoindentation tests with different orientations were carried out, and the depth was 20nm-500nm. Simulations were carried out using crystal plasticity finite element method. The results show that sample with different orientations present anisotropic with increase of indentation depth. The accumulated plastic strains of the samples with different orientations are different due to the different angle between the loading direct and the normal to the slip surface. The cumulative plastic strain of oriented samples is the smallest, and orientation is the largest. The amount of slip coefficients initiated simultaneously for samples with different orientations is responsible for the differences in nanoindentation properties.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"1 1","pages":"2446 - 2455"},"PeriodicalIF":1.8,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83188008","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
Study on brazing WC-6Co/In718 with in-situ synthesis of Ni/Cu/AgCuNiMn solder 原位合成Ni/Cu/AgCuNiMn钎料钎焊WC-6Co/In718的研究
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-05-04 DOI: 10.1080/02670836.2023.2205774
P. Liu, Sujuan Zhong, Y. Pei, Guanxing Zhang, Guidong Mo, G. Wang
{"title":"Study on brazing WC-6Co/In718 with in-situ synthesis of Ni/Cu/AgCuNiMn solder","authors":"P. Liu, Sujuan Zhong, Y. Pei, Guanxing Zhang, Guidong Mo, G. Wang","doi":"10.1080/02670836.2023.2205774","DOIUrl":"https://doi.org/10.1080/02670836.2023.2205774","url":null,"abstract":"Based on AgCuNiMn alloy, Ni/Cu/AgCuNiMn high-Ni solder was designed by in-situ synthesis. The WC-6Co/In718 joint was prepared by vacuum brazing at 950 °C for 10 min. The effect of metal foil on the filler metal filling ability, microstructure and mechanical properties of the joint was studied. The microstructure evolution and strengthening mechanism of the joint brazed with Ni/Cu/AgCuNiMn solder were analysed. The results showed that Ni element mainly plays a solution-strengthening role on the joint, and improve the interface bonding strength and the strength of Ag (s, s) distributed in the centre of the brazed joint, which increased the average tensile strength by 32.4% (from 426.5 to 564.7 MPa).","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"9 1","pages":"2456 - 2463"},"PeriodicalIF":1.8,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78924902","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
Metal oxide-based materials as an emerging platform for fuel cell system: a review 金属氧化物基材料作为燃料电池系统的新兴平台:综述
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-05-04 DOI: 10.1080/02670836.2023.2199574
Yusra Nadzirah Yusoff, N. Shaari, Siti Hasanah Osman
{"title":"Metal oxide-based materials as an emerging platform for fuel cell system: a review","authors":"Yusra Nadzirah Yusoff, N. Shaari, Siti Hasanah Osman","doi":"10.1080/02670836.2023.2199574","DOIUrl":"https://doi.org/10.1080/02670836.2023.2199574","url":null,"abstract":"Polymer electrolyte fuel cells (PEFCs) are attractive energy resources in transportation and portable applications due to their low operational temperatures, excellent energy densities, and simplicity of storage. For the past decade, metal oxides (MO) have been identified as plentiful supplies with excellent electrochemical properties, low cost, an abundance of hydroxyl groups, and environmentally acceptable alternative to currently available materials. Their intriguing properties such as extremely large surface area, low synthesis cost, and so on, make them ideals for many applications. This review covered MO structure, characteristics, and current preparation methods. MO/metal nanoparticles and MO/carbon nanoparticles are also addressed as electrocatalysts, co-catalysts, or supports, especially in PEMFC and DMFC applications. This review also examined the effects of different MO nanoparticles in polymer and biopolymer membranes on membrane characteristics. Finally, the existing issues and future perspectives of MO nanoparticles are also discussed in this review. GRAPHICAL ABSTRACT","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"42 1","pages":"2363 - 2397"},"PeriodicalIF":1.8,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85851509","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
Application of ultrafast heating and tempering to plate steel 超快加热回火技术在钢板上的应用
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-25 DOI: 10.1080/02670836.2023.2202020
J. I. Carreno-Saavedra, T. Ros-Yáñez, C. I. Garcia, E. Hernández-Durán, R. A. Iquilio, F. M. Castro Cerda
{"title":"Application of ultrafast heating and tempering to plate steel","authors":"J. I. Carreno-Saavedra, T. Ros-Yáñez, C. I. Garcia, E. Hernández-Durán, R. A. Iquilio, F. M. Castro Cerda","doi":"10.1080/02670836.2023.2202020","DOIUrl":"https://doi.org/10.1080/02670836.2023.2202020","url":null,"abstract":"The microstructure and tensile properties were studied in a low-alloy steel plate treated under ultra-fast heating, quenching, and tempering. The microstructure after heat-treatments was predominantly martensite, with low fraction of bainite and ferrite. The tensile tests showed a 100 MPa improvement in strength and a doubling of the total elongation with the increase in heating rate. The tempering process considerably enhanced the ductility from 1–4% to up to 14% in the samples treated at fast heating rates..Furthermore, the work hardening capacity of ultra-fast heated steel was superior compared to steel treated under conventional quenching and tempering. The results suggest that the tempering stage after ultra-fast heat-treatments and quenching further improves the properties compared to the standard quenched and tempered condition.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"1 1","pages":"2417 - 2432"},"PeriodicalIF":1.8,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84623294","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
Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression AZ31镁合金单轴压缩变形机理研究
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-23 DOI: 10.1080/02670836.2023.2200324
Xiaoyan Fang, Chen Zhou, Jinbao Lin, Wenwen Li
{"title":"Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression","authors":"Xiaoyan Fang, Chen Zhou, Jinbao Lin, Wenwen Li","doi":"10.1080/02670836.2023.2200324","DOIUrl":"https://doi.org/10.1080/02670836.2023.2200324","url":null,"abstract":"The effects of the non-basal slip and twinning modes on the mechanical behaviour and texture evolution of as-extruded AZ31 alloys during uniaxial compression at room temperature have been investigated by experiments and Visco-Plastic Self Consistent (VPSC) modelling. The results show that the activation of pyramidal slip and {10-11} contraction twinning (CT) can reduce the strain hardening rate in the later stage of compression. And the prismatic slip has a significant effect on the strain hardening rate, the activation of {10-12} extension twinning (ET) can significantly reduce the strain hardening rate and the compressive yield strength. Increased activity of the {10-11} CT causes the pole density transfer to the normal direction (ND) in the {0002} pole figure.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"47 1","pages":"2398 - 2408"},"PeriodicalIF":1.8,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90905414","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
Optimisation of hardness profiles in high-speed train axlebox bearings 高速列车轴箱轴承硬度剖面优化
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-20 DOI: 10.1080/02670836.2023.2198881
Su Liu, Zhiyong Yang, Tao Liu, Zhiqiang Li, T. Cong
{"title":"Optimisation of hardness profiles in high-speed train axlebox bearings","authors":"Su Liu, Zhiyong Yang, Tao Liu, Zhiqiang Li, T. Cong","doi":"10.1080/02670836.2023.2198881","DOIUrl":"https://doi.org/10.1080/02670836.2023.2198881","url":null,"abstract":"To produce bearings with more reasonable hardness profiles, a finite element model was established to simulate different heat treatment processes. Based on the simulated hardness profiles, an artificial neural network model was established to fit the relationship between the heat treatment process parameters and the hardness profiles. Genetic algorithm was used to optimise the hardness profiles and the confirmation test was conducted. The results showed that the optimised hardness profile was closer to the optimisation target. The mean absolute error of hardness was reduced by 68.16% and the root mean square error was reduced by 66.72% after optimisation. This method can be used for hardness profile optimisation and provides a reference for the optimisation of the bearing heat treatment process.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"1 1","pages":"2318 - 2333"},"PeriodicalIF":1.8,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88469652","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
Compressive behaviour of open-cell Al–Si alloy foam produced by infiltration casting 渗透铸造开孔铝硅合金泡沫的压缩性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-19 DOI: 10.1080/02670836.2023.2202496
Yinzheng Xia, J. Shi, Y. Mu
{"title":"Compressive behaviour of open-cell Al–Si alloy foam produced by infiltration casting","authors":"Yinzheng Xia, J. Shi, Y. Mu","doi":"10.1080/02670836.2023.2202496","DOIUrl":"https://doi.org/10.1080/02670836.2023.2202496","url":null,"abstract":"Open-cell Al–Si alloy foams with different densities were manufactured by vacuum infiltration. The foam with smaller NaCl as space holders showed a mixed scaffold structure consisting of abundant struts and cell walls. It was also found that the open-cell Al–Si alloy foam showed various defects containing micropores, microcracks and missing cell walls. The compression results indicated that the open-cell Al–Si alloy foams exhibited smoother stress–strain behaviour and higher compressive strength than that of previous studies, despite a larger number of defects in brittle Al–Si matrix. The successive occurrences of multiple deformation bands owing to the mixed structure and various defects were responsible for the smooth compression stress–strain behaviour.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"7 1","pages":"2433 - 2445"},"PeriodicalIF":1.8,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85611390","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
Tribological behaviour and wear mechanism of ADI with different hardness values 不同硬度ADI的摩擦学性能及磨损机理
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-19 DOI: 10.1080/02670836.2023.2201052
Xin Wang, Yuzhou Du, Chen Liu, Zhijie Gao, Zhitao Hu, Yu Jiang, Bailing Jiang
{"title":"Tribological behaviour and wear mechanism of ADI with different hardness values","authors":"Xin Wang, Yuzhou Du, Chen Liu, Zhijie Gao, Zhitao Hu, Yu Jiang, Bailing Jiang","doi":"10.1080/02670836.2023.2201052","DOIUrl":"https://doi.org/10.1080/02670836.2023.2201052","url":null,"abstract":"The tribological behaviour and wear mechanism of austempered ductile iron (ADI) with different hardness values were investigated. Results showed that the wear resistance of ADI was sensitive to hardness and service conditions. Under mild wear conditions, the low-hardness ADI sample exhibited high wear resistance because graphite was easy to transfer to the tribosurface and acted as a lubricant to reduce the friction coefficient. However, the high-hardness ADI sample was hard to deform plastically, which restricted the transfer of graphite from the matrix to the tribosurface. Under severe wear conditions, the plastic deformation of the low-hardness ADI sample gave rise to abrasive wear, which resulted in poor wear resistance. With the deterioration of wear conditions, the wear mechanism of ADI was transformed from micro-cutting wear to oxidative wear.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"55 1","pages":"2409 - 2416"},"PeriodicalIF":1.8,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82112320","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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