MatSciRN: Process & Device Modeling (Topic)最新文献_第4页

Polycarbonate Light Guide Plates with Embedded Quantum Dots Fabricated by Large-Scale Injection Moulding for Wide Colour Gamut Displays 采用大规模注射成型技术制备的量子点嵌入式聚碳酸酯导光板用于宽色域显示

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-21 DOI: 10.2139/ssrn.3805237

Guang-Hong Chen, Shao Yang, Chang‐Wei Yeh, Shih‐Jung Ho, Meng-Chi Liu, Hsueh‐Shih Chen

引用次数: 16

Se-Induced Enhancement of the High-Temperature Thermoelectric Performance of n-type Cu 0.008Bi 2(Te,Se) 3 Alloys Due to Suppressed Bipolar Conduction 抑制双极传导对n型Cu 0.008Bi 2(Te,Se) 3合金高温热电性能的硒诱导增强

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3787880

Seungki Jo, Hyun-sik Kim, Yurian Kim, Sang‐il Kim, Kyu Hyoung Lee

引用次数: 0

Catalytic Degradation of Poplar by Fe and Fe/Na 2CO 3 Under Different Hydrothermal Liquefaction Processes 不同水热液化工艺条件下Fe和Fe/ na2co3对杨树的催化降解

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3935538

Haijun Wu, Usama Shakeel, Quan Zhang, Kai Zhang, Xia Xu, Jian Xu

引用次数: 0

An Eco-Friendly Approach for the Synthesis of Azocoumarin Dye Using Cation Exchange Resins 阳离子交换树脂合成偶氮香豆素染料的环保方法研究

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3896443

Fadia Alhaj Hussien

引用次数: 0

Stacking Fault Energy-Dependent Strategy Induces Fourfold Nanotwins to Circumvent Strength-Ductility Tradeoff In Medium Manganese Steel 层错能量依赖策略诱导四重纳米孪晶规避中锰钢的强度-延性权衡

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3831014

Junkui Li, Chen Chen, Zhi-nan Yang, Yan-guo Li, B. Lv, Fucheng Zhang

引用次数: 0

Generalized Model of the Flow of a Viscous and Inertly Deformed Medium 粘性惰性变形介质流动的广义模型

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3773387

Y.D. Khodjaev, S. Kasimov, A. Mirzoev

引用次数: 0

Modelling the High-Temperature Strengthening of Ni-Based Superalloys With Cuboidal γ’-Phase Particles 用立方γ′相颗粒模拟ni基高温合金的高温强化

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3862297

Liberty Wu, T. Osada, T. Yokokawa, Yatao Chang, K. Kawagishi

{"title":"Modelling the High-Temperature Strengthening of Ni-Based Superalloys With Cuboidal γ’-Phase Particles","authors":"Liberty Wu, T. Osada, T. Yokokawa, Yatao Chang, K. Kawagishi","doi":"10.2139/ssrn.3862297","DOIUrl":"https://doi.org/10.2139/ssrn.3862297","url":null,"abstract":"The development of advanced Ni-based superalloys for gas turbine applications is strongly reliant on alloy strength design and optimisation through microstructure control. Herein, a new model of precipitation strengthening in Ni-based superalloys with large amounts of cuboidal γ’ particles is proposed and directly validated using commercial alloy (Alloy720Li)-based single-crystal tie-line model alloys with specially designed γ’ particle sizes and volume fractions. All factors responsible for Ni-based superalloy strengthening, including the γ/γ’ mixture, particle strengthening, and solid solution strengthening are extracted from the compressive stress-strain curves performed over a wide temperature range. The strength increment due to particle strengthening is predicted for five model alloys with various γ’-particle volume fractions, sizes, and shapes. The pair-coupling model assuming the presence of cuboidal γ’ particles accurately predicts alloy strength over a wide temperature range (up to 760 °C) for volume fractions of >45%, whereas the classical model assuming spherical γ’ particles is valid only for volume fractions of <20%. Thus, the former model is much more accurate than classical models across wider volume fractions up to the disc service temperature, contributing to the design of further strengthened superalloys.","PeriodicalId":18255,"journal":{"name":"MatSciRN: Process & Device Modeling (Topic)","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87270687","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

W/Ni 3(PO 4) 2@NC/NF Nanorods via Electrodeposition with Carbonization as a Bifunctional Catalyst for Electrocatalytic Water Splitting W/ ni3 (po4) 2@NC/NF纳米棒电沉积-碳化双功能催化剂电催化水分解

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3913052

Liyang Wu, Jianmei Cen, Asad Ali, Jiecai Li, P. Shen

{"title":"W/Ni 3(PO 4) 2@NC/NF Nanorods via Electrodeposition with Carbonization as a Bifunctional Catalyst for Electrocatalytic Water Splitting","authors":"Liyang Wu, Jianmei Cen, Asad Ali, Jiecai Li, P. Shen","doi":"10.2139/ssrn.3913052","DOIUrl":"https://doi.org/10.2139/ssrn.3913052","url":null,"abstract":"Conducting polymers are commonly used as precursors for preparing carbon-based catalysts and have been used in electrocatalytic water splitting. However, so far, most of the catalytic materials synthesized with the assistance of high polymer conducting polymers are non-self-supporting and have only single-function catalytic effect. Therefore, it is an inevitable trend to synthesize a bifunctional self-supported highly efficient and long-stable water splitting catalyst. Herein, a self-supporting polypyrrole precursor PPy-PW12 was prepared by electrodeposition with phosphotungstic acid as dopant. In addition, the PPy-PW12 precursor was then calcined. The as-prepared W/Ni3(PO4)2@NC/NF electrocatalyst exhibits admirable HER and OER performances with overpotentials of 48 mV for HER and 236 mV for OER to reach a current density of 10 mA cm -2 in 1M KOH solution. Additionally, when W/Ni3(PO4)2@NC/NF is used in overall water splitting as a bifunctional catalyst, it needs only 1.53 V to give a current density of 10 mA cm−2 which is superior to typically integrated Pt/C and RuO2 counterparts. Our work offers a facile strategy to apply W/Ni3(PO4)2@NC/NF as practical bifunctional electrocatalysts for large-scale water splitting.","PeriodicalId":18255,"journal":{"name":"MatSciRN: Process & Device Modeling (Topic)","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86341160","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

Facile Route to Implement Transformation Strengthening in Lightweight Alloys 实现轻量化合金相变强化的捷径

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3886367

G. Zhao, Xin Xu, D. Dye, P. Rivera-Díaz-del-Castillo, N. Petrinic

{"title":"Facile Route to Implement Transformation Strengthening in Lightweight Alloys","authors":"G. Zhao, Xin Xu, D. Dye, P. Rivera-Díaz-del-Castillo, N. Petrinic","doi":"10.2139/ssrn.3886367","DOIUrl":"https://doi.org/10.2139/ssrn.3886367","url":null,"abstract":"Developing lighter, stronger and more ductile aerospace metallic materials is in demand for energy efficiency strategies. Alloys with twinning-induced plasticity (TWIP) and/or transformation-induced plasticity (TRIP) effects have been exploited to defeat the conflict of strength versus ductility, yet very few if any physically informed methods exist to address the complex interactions between transitions. Here we report a facile route to deploy transformation-mediated strengthening in lightweight Ti alloys, which particularly focuses on the controlled activation of TRIP and TWIP via a mechanism-driven modelling approach. New alloys were comparatively developed and presented notable resistances to strain localisation, but interestingly through distinct mechanical characteristics. Specifically, extraordinary strain-hardening rate with a peak value of 2.4 GPa was achieved in Ti-10Mo-5Nb (wt.%), resulting from the synergetic activation of hierarchical transformations. A model integrating TRIP and TWIP was applied to understand the interplays between the transition mechanisms that individually contribute to strength and uniform elongation.","PeriodicalId":18255,"journal":{"name":"MatSciRN: Process & Device Modeling (Topic)","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83688824","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

High-Density Deformation Nanotwin Further Improved Tensile Strength of Polycrystalline γ-TiAl-Based Intermetallic Alloy 高密度变形纳米孪晶进一步提高了多晶γ- tial基金属间合金的抗拉强度

MatSciRN: Process & Device Modeling (Topic) Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3821950

Shiqiu Liu, H. Ding, Ruirun Chen, Jingjie Guo, H. Fu

{"title":"High-Density Deformation Nanotwin Further Improved Tensile Strength of Polycrystalline γ-TiAl-Based Intermetallic Alloy","authors":"Shiqiu Liu, H. Ding, Ruirun Chen, Jingjie Guo, H. Fu","doi":"10.2139/ssrn.3821950","DOIUrl":"https://doi.org/10.2139/ssrn.3821950","url":null,"abstract":"Strengthening of TiAl-based intermetallic alloy is vital for its broader application, however, microstructural refinement through conventional processes is difficult to further strengthen this intermetallic alloy. Although high-density deformation nanotwin is expected to effectively strengthen it, there is still lack of in-depth understanding about the strengthening mechanism of high-density deformation nanotwin in TiAl-based alloy. Herein the microstructures, room-temperature (RT) tensile properties, tensile fracture behavior, and deformation mechanism of the Ti-45.5Al-4Cr-2.5Nb (at.%) master alloy (M. A.) as well as its continuous casting (C. C.) alloy and the heat-treated alloys were systematically investigated. After the C. C. alloy was annealed at 1250 °C for 2 hours, the volume fraction of (B2+γ) coupled structures in the original grains reached the minimum, the interlamellar spacing was markedly refined; besides, substantial Shockley partial dislocations and stacking faults were generated in γ phase. During RT tension, both the dominant deformation mechanisms of the M. A. and C. C. alloy were dislocation slip, while that of the 2h heat-treated alloy was changed into deformation twinning. High-density deformation nanotwins were generated in the γ phase (especially the γ lamellae) of the 2h heat-treated alloy, which improved the tensile strength of the M. A. by 79%. High-density deformation nanotwins can further strengthen TiAl-based alloy to a large extent, which is mainly attributed to the fact that their batch-to-batch generation in the polycrystalline TiAl-based alloy during tension could considerably relief the stress concentration in addition to effectively improving the work-hardening rate, thus making the work-hardening rate keeping stable.","PeriodicalId":18255,"journal":{"name":"MatSciRN: Process & Device Modeling (Topic)","volume":"191 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79768183","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