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International Journal of Computational Materials Science and Surface Engineering最新文献

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The effect of combined electrical and thermal cyclic loading on the mechanical behaviour of HfO2 nanofilm. A molecular dynamics study 电循环负载和热循环负载对HfO2纳米膜机械性能的影响。分子动力学研究
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-10-08 DOI: 10.1504/ijcmsse.2020.10032743
R. Kayser, S. F. Ferdous, A. Adnan
{"title":"The effect of combined electrical and thermal cyclic loading on the mechanical behaviour of HfO2 nanofilm. A molecular dynamics study","authors":"R. Kayser, S. F. Ferdous, A. Adnan","doi":"10.1504/ijcmsse.2020.10032743","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10032743","url":null,"abstract":"We present an atomistic computational study of electric field and thermal effects on the mechanical behaviour of memristor material HfO2. Memristor materials are used for neuromorphic computation which promises to decrease energy consumption and improve the efficiency of important computational tasks, such as perception and decision making. In our study, first, the atomistic model of HfO2 is built on a monoclinic lattice structure. Then, tensile tests have been carried out to study its mechanical behaviour. Since the material has non-symmetric crystal structure, we observe varied tensile properties along the x, y and z directions. In addition, the effects of electrical field on mechanical behaviour are studied by varying the electrical field intensity from 0 to 0.3 v/A gradually. For each case, atomistic snapshots are taken to identify the changes occur in the structure due to the electric field. A significant structural damage on the crystal structure of HfO2 is observed after applying 0.3 v/A electric field, whereas the structural change is insignificant when the magnitude of the electric field is 0.2 v/A or less. To understand more about the damage of this material, shear loads are applied in different directions and their responses are studied elaborately in this paper.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42211337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 bonding process parameters for experimentation and ANN-GA model development to maximise diffusion bond strength 用于实验和ANN-GA模型开发的结合工艺参数设计，以最大限度地提高扩散结合强度
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-10-08 DOI: 10.1504/ijcmsse.2020.10032744
A. S. F. Britto, R. Raja, M. C. Mabel
{"title":"Design of bonding process parameters for experimentation and ANN-GA model development to maximise diffusion bond strength","authors":"A. S. F. Britto, R. Raja, M. C. Mabel","doi":"10.1504/ijcmsse.2020.10032744","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10032744","url":null,"abstract":"Challenges in joining dissimilar aluminium alloys like AA1100 and AA7075 by conventional methods find an alternate methodology in diffusion bonding. The major process parameters of diffusion bonding, the temperature, pressure and holding time were appropriated to maximise the joint strength. Experimental parameters were designed at strategical points to cover the domain of its influence with design expert software and the empirical results were analysed using response surface methodology (RSM). Input-output mapping of results was also done by stochastic modelling tool, the artificial neural network (ANN) and later the process parameter was optimised with genetic algorithm (GA). It is found that the prediction accuracy of ANN model was twice accurate than that of RSM. The optimised temperature, pressure and holding time for sound bonding is 380°C, 10 MPa and 46 min respectively, which were confirmed by experimental results.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46781030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Predictive model for surface accuracy in ultra-high precision single point diamond machining of monocrystalline silicon using RSM and MD 基于RSM和MD的单晶硅超高精密单点金刚石加工表面精度预测模型
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-09-11 DOI: 10.1504/ijcmsse.2020.10032001
Lukman N. Abdulkadir, K. Abou-El-Hossein, Abubakar I. Jumare, M. Liman, Odedeyi Peter Babatunde
{"title":"Predictive model for surface accuracy in ultra-high precision single point diamond machining of monocrystalline silicon using RSM and MD","authors":"Lukman N. Abdulkadir, K. Abou-El-Hossein, Abubakar I. Jumare, M. Liman, Odedeyi Peter Babatunde","doi":"10.1504/ijcmsse.2020.10032001","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10032001","url":null,"abstract":"Silicon has enjoyed extensive usage in electronic devices, solar cells and infrared (IR) optics because of its high transmittance at 1.2 to 6.0 μm wavelength range. High quality optical silicon components (Ra less than 8 nm) requires appropriate choice of ductile regime machining cutting conditions that can improve surface roughness and facilitate accurate prediction. To achieve this, three factors, i.e., feed rate, rake angle and nose radius were varied while keeping cutting speed, depth of cut and clearance angle constant. An MD study of the experiment was also carried out for comparison. The result obtained showed that; BBD standard runs 5, 6, 8, 9, and 10 with Ra values between 1.8 and 7 nm are of high form accuracy and satisfied the basic requirement of Ra over the entire IR region for silicon. The MD study was also observed to conform with the Ra result as obtained in the experiment.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43297999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multiple welding simulated microstructure and corrosion resistance of super austenitic stainless steel 254SMo welding heat affected zone 多次焊接模拟超级奥氏体不锈钢254SMo焊接热影响区的显微组织及耐蚀性
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-05-22 DOI: 10.1504/ijcmsse.2020.10029640
G. Fan, Jie Liu, Guannan Zhang, Yugui Li, G. Luo, X. Lian, Guoping Li
{"title":"Multiple welding simulated microstructure and corrosion resistance of super austenitic stainless steel 254SMo welding heat affected zone","authors":"G. Fan, Jie Liu, Guannan Zhang, Yugui Li, G. Luo, X. Lian, Guoping Li","doi":"10.1504/ijcmsse.2020.10029640","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10029640","url":null,"abstract":"This paper studies the effects of thermal cycle and heat input on microstructure, grain size, precipitated phase and corrosion properties in the simulated heat-affected zone of super austenitic stainless steel 254SMo. The results show that the microstructure grains in the heat affected zone gradually grow up, the pitting corrosion resistance decreases continuously and intergranular corrosion resistance firstly decreases and then increases with the thermal cycle and heat input increase. The precipitated phase appears in the heat-affected zone at the multiple thermal cycles and high heat input.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42576128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The study on kinetics of metadynamic recrystallisation of a Nb-V microalloyed non-quenched and tempered steel Nb-V微合金化非调质钢的超动态再结晶动力学研究
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-05-22 DOI: 10.1504/IJCMSSE.2020.10029638
Liwen Zhang, Wenfei Shen, Chi Zhang, Yingnan Xia, Xin-hua Shi, Fei Xia
{"title":"The study on kinetics of metadynamic recrystallisation of a Nb-V microalloyed non-quenched and tempered steel","authors":"Liwen Zhang, Wenfei Shen, Chi Zhang, Yingnan Xia, Xin-hua Shi, Fei Xia","doi":"10.1504/IJCMSSE.2020.10029638","DOIUrl":"https://doi.org/10.1504/IJCMSSE.2020.10029638","url":null,"abstract":"The metadynamic recrystallisation (MDRX) behaviour of a Nb-V microalloyed non-quenched and tempered steel was investigated by isothermal hot compression tests on Gleeble-1500 thermal-mechanical simulator. Compression tests were performed using double hit schedules at temperatures of 1,273-1,423 K, strain rates of 0.01-5 s−1, initial grain sizes of 92-149 μm and inter-pass time of 0.5-10 s. The effects of deformation parameters, including deformation temperature, strain rate, initial grain size and inter-pass time, on MDRX softening fraction were analysed. The experimental results show that MDRX softening fraction increases with the increase of deformation temperature, strain rate and inter-pass time, while it decreases with the increase of initial grain size. Based on the experimental results, the kinetic model of MDRX for the tested steel was established. A good agreement between the experimental and predicted MDRX softening fraction indicates that the established kinetic model can precisely predict the MDRX softening fraction for the tested steel.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48863077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study the effect of roller hardness on the surface properties of burnished AISI 1211 steel 研究了轧辊硬度对抛光后AISI 1211钢表面性能的影响
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-05-22 DOI: 10.1504/ijcmsse.2020.10029643
A. Arulbrittoraj, A. Gurumoorthy, S. Karthikeyan, M. Duraiselvam
{"title":"Study the effect of roller hardness on the surface properties of burnished AISI 1211 steel","authors":"A. Arulbrittoraj, A. Gurumoorthy, S. Karthikeyan, M. Duraiselvam","doi":"10.1504/ijcmsse.2020.10029643","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10029643","url":null,"abstract":"This work aims to study the effect of roller hardness on the surface quality of AISI 1211 burnished steel surfaces. High-speed-steel rollers with untreated and cryogenic treated conditions are employed for roller burnishing. Cryogenic treatment is carried out at the temperature of −180°C for 36 hours in a liquid nitrogen bath followed by tempering at 200°C for six hours. CNC turning centre is employed for roller burnishing. The surface quality is measured in terms of surface roughness and hardness against the function of three different turning parameters namely spindle speed, feed rate and depth of penetration. The average hardness of cryogenic treated rollers is increased from 380 Hv0.5 to 625 Hv0.5. The results revealed that increasing the spindle speed significantly affected the surface finish and increase in roller penetration depth increases the hardness of AISI 1211 steel surfaces. Cryogenic treated rollers provide better surface finish and hardness on the AISI 1211 steel samples than untreated rollers.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43380092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Selection of process parameters of AISI 304 for laser processing of materials AISI 304材料激光加工工艺参数的选择
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-05-22 DOI: 10.1504/ijcmsse.2020.10029636
Paramasivan Kalvettukaran, Sandip Das, S. Marimuthu, D. Misra
{"title":"Selection of process parameters of AISI 304 for laser processing of materials","authors":"Paramasivan Kalvettukaran, Sandip Das, S. Marimuthu, D. Misra","doi":"10.1504/ijcmsse.2020.10029636","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10029636","url":null,"abstract":"This paper describes numerical simulation of laser processing of AISI 304 sheet metal and statistical analysis to develop mathematical relations for determination of the limiting values of the process parameters such that the material temperature remains above or below the specified maximum temperature, depending upon the specific requirement. The simulations layout is designed based on a central composite design (CCD) with four factors and five levels. The simulations are carried out through finite element package COMSOL MULTIPHYSICS®. Based on the simulation output, a regression equation is developed to estimate the maximum temperature as a function of the laser process parameters and sheet thickness. Once the regression equation is obtained, the same is recast to obtain limiting values of process parameters that may be applied such that the maximum temperature exceeds or remains below a specified maximum temperature or the melting temperature of the specimen.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46251667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of thermo-mechanical behaviour of friction drilling process 摩擦钻井过程的热力行为模拟
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-05-22 DOI: 10.1504/ijcmsse.2020.10029644
R. Kumar, N. Hynes, Anish Khan
{"title":"Simulation of thermo-mechanical behaviour of friction drilling process","authors":"R. Kumar, N. Hynes, Anish Khan","doi":"10.1504/ijcmsse.2020.10029644","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10029644","url":null,"abstract":"Friction drilling is a novel technique for producing holes in thin sheet metal without plastic shear and material removal. In this process, no chip comes out, the displaced material in the region of hole thus made, forms a bushing by a conical friction drilling tool. During the process of producing holes in the sheet metal, severe plastic deformation of workpiece material occurs and eventually, the temperature distribution in tool and workpiece is very high. Hence, simulation of the process is necessary to predict the direction of material flow and high temperature distribution which are challenging to measure by experimentation alone. The objective of this work is to numerically analyse the pattern of bush formation in thin sheet metal of galvanised steel during the process and to predict the temperature distribution, axial force, and torque in the work piece. Validation shows high degree of agreement between the numerical results and experimental results.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45171016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Microstructure and mechanical properties of nano-WC decorated AlSi10Mg composite produced by selective laser melting: effect of heat treatment 选择性激光熔化制备纳米wc修饰AlSi10Mg复合材料的显微组织和力学性能:热处理的影响
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-01-01 DOI: 10.1504/IJCMSSE.2020.10034958
H. Ye, Fang-bing Le, Jianqiang Zhang, Yong Liu
{"title":"Microstructure and mechanical properties of nano-WC decorated AlSi10Mg composite produced by selective laser melting: effect of heat treatment","authors":"H. Ye, Fang-bing Le, Jianqiang Zhang, Yong Liu","doi":"10.1504/IJCMSSE.2020.10034958","DOIUrl":"https://doi.org/10.1504/IJCMSSE.2020.10034958","url":null,"abstract":"Nano-WC and AlSi10Mg composite powder were fabricated by gas-atomised for selective laser melting (SLM). Here, the influence of the heat treatment conditions on microstructure and mechanical properties of WC/AlSi10Mg produced by SLM were investigated, and the mechanisms of microstructure evolution were elucidated. Al substrates are oversaturated, and the solid solubility decreases due to increased annealing temperature. Si particles precipitate from the Al matrix. The mechanical properties of the sample are predominantly governed by the Si particle size. The addition of a small amount of (0.1 wt.%) WC results in tensile strength of 515 MPa in the as-deposited specimen, in comparison with other papers, it was found that significantly enhanced the mechanical properties of the specimen. The results of this study show that adding a small amount of WC and the heat treatment are effective in enhancing the mechanical properties of SLM produced AlSi10Mg samples.","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66724007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation and prediction of mechanical properties of HDPE grade P5300 using molecular dynamics HDPE等级P5300力学性能的分子动力学评价与预测
International Journal of Computational Materials Science and Surface Engineering Pub Date : 2020-01-01 DOI: 10.1504/ijcmsse.2020.10030504
V. Dwivedi, Dipak Kumar
{"title":"Evaluation and prediction of mechanical properties of HDPE grade P5300 using molecular dynamics","authors":"V. Dwivedi, Dipak Kumar","doi":"10.1504/ijcmsse.2020.10030504","DOIUrl":"https://doi.org/10.1504/ijcmsse.2020.10030504","url":null,"abstract":"","PeriodicalId":39426,"journal":{"name":"International Journal of Computational Materials Science and Surface Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66723909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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