IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30008-6

Bai Xue, Jin Yunxue, Lu Xuan, Chen Yanan

{"title":"Friction and Wear Performance of in-Situ (TiC+TiB)/Ti6Al4V Composites","authors":"Bai Xue, Jin Yunxue, Lu Xuan, Chen Yanan","doi":"10.1016/S1875-5372(19)30008-6","DOIUrl":"10.1016/S1875-5372(19)30008-6","url":null,"abstract":"<div>(TiC+TiB)/Ti6Al4V composites with different TiC and TiB contents were prepared by in situ synthesis. The influence of load on the dry sliding friction and wear performance of in-situ (TiC+TiB)/Ti6Al4V composites (TMC) was studied by HT-1000 friction and wear testing machine, and the wear behavior of the composites was also investigated by scanning electron microscopy (SEM) and Bruker 3D profilometer. The results show that the wear resistance of TMC is improved by the formation of TiC and TiB phases compared to the Ti6Al4V matrix. For the composites with different volume fractions of reinforcing phases, the wear rate and wear depth increase with the increase of the applied load, and the friction coefficient decreases and fluctuates within a small range. Under low loads, the worn surface is covered with grooves and a small amount of wear debris; under heavy loads, the worn surface is covered with narrow and shallow grooves and a large amount of wear debris. The wear mechanism is abrasive wear and oxidation wear. As the load increases, the size of the debris increases.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 12","pages":"Pages 3624-3628"},"PeriodicalIF":0.7,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(19)30008-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76810443","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: 5

Undercooling and Microstructure of Gas Atomized Ni-based Superalloy Powders ni基高温合金气体雾化粉末的过冷及显微组织

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30005-0

Chen Shiqi , Lu Zhi , Wang Guangxin

引用次数: 3

Microstructure and Mechanical Property Development in a Hot-rolled and Annealed Mg-5Li-1Al Alloy Sheet 热轧退火Mg-5Li-1Al合金板材组织与力学性能的发展

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30011-6

Li Ruihong , Chen Zhijun , Jiang Bin , Pan Fusheng

引用次数: 1

Preparation and Characterization of Boron-Doped Nanodiamond 掺硼纳米金刚石的制备与表征

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30010-4

Yan Xianrong , Li Xiaojie , Wang Xiaohong , Yan Honghao

{"title":"Preparation and Characterization of Boron-Doped Nanodiamond","authors":"Yan Xianrong , Li Xiaojie , Wang Xiaohong , Yan Honghao","doi":"10.1016/S1875-5372(19)30010-4","DOIUrl":"10.1016/S1875-5372(19)30010-4","url":null,"abstract":"<div>Boron-doped nanodiamond was prepared by a high-temperature vacuum-diffusion method. Thermogravimetric analysis, X-ray photoelectron spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy, Raman spectroscopy, and transmission electron microscopy were used to characterize the prepared material. Results show that the product mainly contains C, O, and B in mass fractions of 92.08%, 7.14%, and 0.78%, respectively. In addition to diamond (111)D and (220)D diffraction peaks, hexagonal diamond (100)D diffraction peaks are also observed in the XRD pattern of the boron-doped product. The introduction of B atoms increases the defect content in the nanodiamond and causes the Raman G peak to move to 1620 cm−1. B atoms are mainly present in two forms in the diamond lattice: substitutional carbon atoms in C-B bonds, and being bonded with impurity elements (such as B-O). The shape and morphology of the boron-doped nanodiamond particles (particle size of detonation nanodiamond, 2∼10 nm) exhibit no obvious changes compared to the pristine nanodiamond. However, a small amount of cubic diamond is observed. In conclusion, the initial oxidation temperature of the boron-doped nanodiamond increases by 175 °C, the oxidation rate is slower, and the thermal stability is improved.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 12","pages":"Pages 3634-3639"},"PeriodicalIF":0.7,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(19)30010-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87626707","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: 1

Improved Mechanical Properties of Additive Manufactured Ti-6Al-4V Alloy via Annealing in High Magnetic Field 增材制备Ti-6Al-4V合金强磁场退火后力学性能的改善

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30017-7

Zhao Ruifeng , Li Jinshan , Zhang Ying , Li Peixuan , Wang Jiaxiang , Zou Cheng-xiong , Tang Bin , Kou Hongchao , Gan Bin , Zhang Liang , Wang Jun , William Yi Wang

{"title":"Improved Mechanical Properties of Additive Manufactured Ti-6Al-4V Alloy via Annealing in High Magnetic Field","authors":"Zhao Ruifeng , Li Jinshan , Zhang Ying , Li Peixuan , Wang Jiaxiang , Zou Cheng-xiong , Tang Bin , Kou Hongchao , Gan Bin , Zhang Liang , Wang Jun , William Yi Wang","doi":"10.1016/S1875-5372(19)30017-7","DOIUrl":"10.1016/S1875-5372(19)30017-7","url":null,"abstract":"<div>A novel magnetic-field-driving approach was proposed and used to efficiently enhance the mechanical properties of selective laser melting (SLM) Ti-6Al-4V. The microstructures of the as-built and the SLM specimens annealed at 400, 800 °C below the β transus, and 1200 °C above the β transus for 30 min in the high magnetic field of 7 T were comprehensively characterized in terms of X-ray diffraction, optical microscope, scanning electron microscope, and atomic force microscope. Lattice distortions induced by Al and V atoms were characterized by bonding charge density, providing an insight into the atomic and electronic basis for the solid solution strengthening mechanism and the martensitic transformation mechanism. Referring to the as-built specimens, the ultimate tensile strength and the elongation of annealed specimens at 400 and 1200 °C in 7 T high magnetic field increase due to the short annealing time. Based on the coupling effect of force field induced by the heat and magnetic, it is expected that the microstructures of SLM Ti-6Al-4V would be conventionally optimized through changing the phase transformation thermodynamics. The validation of this hypothesis will pave a path to develop a novel magnetic-field-driving approach efficiently enhancing the mechanical properties of additive manufactured materials.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 12","pages":"Pages 3678-3685"},"PeriodicalIF":0.7,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(19)30017-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88816072","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: 4

First-principles Study on Effect of Pressure and Temperature on Mechanical, Thermodynamic Properties, and Electronic Structure of Ni3Al Alloy 压力和温度对Ni3Al合金力学、热力学和电子结构影响的第一性原理研究

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30013-X

Niu Xiaofeng , Huang Zhiwei , Yan Peiwen , Wang Baojian , Song Zhenliang , Wang Chenchen , Zhao Jingyu , Bo Yanqiang

{"title":"First-principles Study on Effect of Pressure and Temperature on Mechanical, Thermodynamic Properties, and Electronic Structure of Ni3Al Alloy","authors":"Niu Xiaofeng , Huang Zhiwei , Yan Peiwen , Wang Baojian , Song Zhenliang , Wang Chenchen , Zhao Jingyu , Bo Yanqiang","doi":"10.1016/S1875-5372(19)30013-X","DOIUrl":"10.1016/S1875-5372(19)30013-X","url":null,"abstract":"<div>The influence of temperature and pressure on the electronic, elastic, structural, and thermodynamic properties of Ni3Al alloy was investigated by performing a first-principles study. The calculated elastic constants, equilibrium lattice constants, and elastic modulus agree well with the recorded theoretical and experimental data. The calculated elastic constants indicate that C11 is more sensitive than C12 and C44 to pressure. The Young’s modulus, bulk modulus, and shear modulus increase with the increase of pressure. The ratio of bulk to shear modulus (B/G) and anisotropy factor A were also analyzed. The Debye temperature was obtained by calculating the elastic constants, and it changes with the change in the pressure. The thermal expansion coefficient, normalized volume, heat capacity, bulk modulus, and Debye temperature ΘD were determined and analyzed using the quasi-harmonic Debye model at pressures of 0∼60 GPa and temperatures of 0∼1600 K. Finally, the density of states and Mulliken population were investigated and the effect of pressure on these was analyzed.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 12","pages":"Pages 3651-3658"},"PeriodicalIF":0.7,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(19)30013-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75238893","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

Numerical Simulation of the Influence of Electrode Shrinkage Cavity on ESR Process of IN718 Alloy 电极缩孔对IN718合金电渣重熔过程影响的数值模拟

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30002-5

Wang Zixing , Qing Li , Wang Lei

{"title":"Numerical Simulation of the Influence of Electrode Shrinkage Cavity on ESR Process of IN718 Alloy","authors":"Wang Zixing , Qing Li , Wang Lei","doi":"10.1016/S1875-5372(19)30002-5","DOIUrl":"10.1016/S1875-5372(19)30002-5","url":null,"abstract":"<div>Numerical simulation and analysis of the influence of electrode shrinkage cavity on electroslag remelting (ESR) process of IN718 alloy ingot with a diameter of 430 mm were carried out using the self-developed ESR process model. Electromagnetic fields of ESR system were simulated by a specially designed shrinkage cavity with different shapes and sizes in the electrode. The results show that the contacting area changes between the electrode and the slag owing to the cavity, which plays a predominant role in the distribution of the Joule heat and electromagnetic force in the slag, while the effect of axial dimension change of the shrinkage cavity is negligible. Constant melt rate ESR processes were simulated for different radius cavity situations. It is shown that, at a constant melt rate, the shrinkage cavity has no effect on the ESR process as its radius is less than 0.025 m, and only a small influence on the slag flow when the radius reaches 0.05 m. As the radius increases over 0.05 m, an increasingly evident influence on the slag zone appears via the weakened center downward flow and the increased temperature. Nevertheless, the cavity has no obvious influence on the ingot including the melt pool and mush zone. There is a nonlinear relation between the shrinkage cavity radius and the ESR melting parameters such as current and power, and the critical value of the radius is approximately 0.05 m. Below the critical value, faint or even no change in the parameters appears, while, above the value, the parameters of power and current increase rapidly in an approximately linear manner. From the standpoint of process control stability, the shrinkage cavity radius should be controlled below 0.05 m.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 12","pages":"Pages 3579-3589"},"PeriodicalIF":0.7,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(19)30002-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75633156","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: 1

High-temperature Sulfidation and Oxidation Behavior of Plasma-sprayed Al-Mo Coatings 等离子喷涂Al-Mo涂层的高温硫化和氧化行为

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30006-2

Wu Liangmin , Wang Weize , Yu Jingye , Huang Jibo , Li Chaoxiong

引用次数: 1

Review on Joining Process of Carbon Fiber-Reinforced Polymer and Metal: Methods and Joining Process 碳纤维增强聚合物与金属连接工艺研究进展:方法及连接工艺

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30018-9

Zhang Dawei , Zhang Qi , Fan Xiaoguang , Zhao Shengdun

引用次数: 40

Oxygenated Treatment on Saturated Vapour Oxidation Behaviors of GH2984 Alloys for 700 °C Ultra-supercritical Boilers 700℃超超临界锅炉GH2984合金饱和蒸汽氧化行为的氧合处理

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-12-01 DOI: 10.1016/S1875-5372(19)30016-5

Wang Yu , Liu Jiangnan , Wang Zhengpin , Yao Yuhong , Yu Zaisong , Lu Jintao

{"title":"Oxygenated Treatment on Saturated Vapour Oxidation Behaviors of GH2984 Alloys for 700 °C Ultra-supercritical Boilers","authors":"Wang Yu , Liu Jiangnan , Wang Zhengpin , Yao Yuhong , Yu Zaisong , Lu Jintao","doi":"10.1016/S1875-5372(19)30016-5","DOIUrl":"10.1016/S1875-5372(19)30016-5","url":null,"abstract":"<div>The saturated vapor oxidation behavior of GH2984 alloys at 750 °C were investigated by oxidation weight increasing method, X-ray diffraction and scanning electronic microscopy in different dissolved oxygen concentrations. The results show that the oxide film of GH2984 alloys in different dissolved oxygen concentrations is of a single layer consisting of continuous Cr2O3. The oxidation mass gain of GH2984 alloys slightly increases with the increase of the dissolved oxygen concentrations in water vapor. Oxygenated treatment could accelerate the internal oxidation phenomenon, enhance the oxidation film thickness and make the scattered nodular bulges of Fe2O3 disappear and more Cr-rich nodular bulges form. Moreover, high dissolved oxygen concentrations do not affect the stabilization of Cr2O3 but contribute to the formation of a little Al2O3 and TiO2 which are oxidized internally.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 12","pages":"Pages 3672-3677"},"PeriodicalIF":0.7,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(19)30016-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84135242","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: 1

稀有金属材料与工程最新文献