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International Journal of Minerals,Metallurgy and Materials 2022年第9期29卷 1770-1779页

作者： Yaoxiang Geng Hao Tang junhua Xu Yu Hou Yuxin Wang Zhen He Zhijie Zhang hongbo ju Lihua Yu School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Many studies have investigated the selective laser melting(SLM)of AlSi10Mg and AlSi7Mg alloys,but there are still lack of researches focused on Al-Si-Mg alloys specifically tailored for *** this work,a novel high Mg-content AlSi8Mg3 alloy was specifically designed for *** results showed that this new alloy exhibited excellent SLM processability with a lowest porosity of 0.07%.Massive lattice distortion led to a high Vickers hardness in samples fabricated at a high laser power due to the precipitation of Mg_(2)Si nanoparticles from theα-Al matrix induced by high-intensity intrinsic heat treatment during *** maximum microhardness and compressive yield strength of the alloy reached HV(211±4)and(526±12)MPa,*** aging treatment at 150℃,the maximum microhardness and compressive yield strength of the samples were further improved to HV(221±4)and(577±5)MPa,*** values are higher than those of most known aluminum alloys fabricated by *** paper provides a new idea for optimizing the mechanical properties of Al-Si-Mg alloys fabricated using SLM.

关键词： AlSi8Mg3 alloy selective laser melting process parameters microstructure aging treatment mechanical properties

Tribological performance under different environments of Ti-C-N composite films for marine wear-resistant parts

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International Journal of Minerals,Metallurgy and Materials 2023年第1期30卷 144-155页

作者： hongbo ju Rui Zhou Jing Luan Ch Sateesh Kumar Lihua Yu junhua Xu junfeng Yang Bowei Zhang Filipe Fernandes School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China CEMMPRE—Centre for Mechanical Engineering Materials and Processes Department of Mechanical EngineeringUniversity of CoimbraCoimbra 3030-788Portugal CFAA University of the Basque Country UPV/EHUBilbao 48170Spain ISEP-School of Engineering Polytechnic of PortoPorto 4200-072Portugal Key Laboratory of Materials Physic Institute of Solid State PhysicsHefei Institute of Physical SciencesChinese Academy of SciencesHefei 230031China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

The need for reducing the wear in mechanical parts used in the industry makes self-lubricant films one of the sustainable solutions to achieve long-term protection under different environmental *** purpose of this work is to study the influence of C additions on the tribological behavior of a magnetron-sputtered TiN film in air,water,and *** results show that the addition of C into the TiN binary film induced a new amorphous phase,and the films exhibited a dual phase of fcc(face-centered cubic)-TiN and amorphous *** antifriction and wear-resistance properties were enhanced in air and water by adding 19.1at%***,a further increase in the C concentration improved anti-frictional properties but also led to higher wear *** the amorphous phase induced microbatteries and accelerated the corrosion of TiN phases in seawater,the negative abrasion state was detected for all Ti-C-N films due to the adhesion of the tribocorrosion debris on the wear track.

关键词： RF reactive magnetron sputtering Ti-C-N films microstructure tribological properties in air/water/seawater

Insights into the oxidation resistance mechanism and tribological behaviors of multilayered TiSiN/CrVxN hard coatings

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International Journal of Minerals,Metallurgy and Materials 2023年第12期30卷 2459-2468页

作者： hongbo ju Moussa Athmani Jing Luan Abbas AL-Rjoub Albano Cavaleiro Talha Bin Yaqub Abdelouahad Chala Fabio Ferreira Filipe Fernandes School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Laboratory of Physics of Thin Films and Applications University of Mohamed KhiderBP 145 RPBiskra 07000Algeria CEMMPRE ARISEDepartment of Mechanical EngineeringUniversity of CoimbraCoimbra 3030-788Portugal IPN-LED&MAT-Instituto Pedro Nunes Laboratory of TestsWear and MaterialsCoimbra 3030-199Portugal ISEP Polytechnic of PortoRua Dr.António Bernardino de AlmeidaPorto 4249-015Portugal

In the last decades,vanadium alloyed coatings have been introduced as potential candidates for self-lubrication due to their perfect tribological *** this work,the influence of V incorporation on the wear performance and oxidation resistance of TiSiN/CrN film coatings deposited by direct current(DC)reactive magnetron sputtering is *** results show that vanadium incorporation significantly decreases the oxidation resistance of the *** general,two layers are formed during the oxidation process:i)Ti(V)O_(2) on top,followed by a protective layer,which is subdivided into two layers,Cr_(2)O_(3) and ***)The diffusion of V controls the oxidation of V-containing *** addition of vanadium improves the wear resistance of coatings,and the wear rate decreases with increasing V content in the coatings;however,the friction coefficient is independent of the chemical composition of the *** wear of the V-containing coatings is driven by polishing wear.

关键词： DC magnetron sputtering TiSiN/CrVxN multilayer coatings oxidation resistance tribology wear rate

Fatigue Crack Growth Behavior of Different Zones in an Annealed Automatic Gas Tungsten Arc Weld Joint of TA16 and TC4 Titanium Alloys

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Journal of Wuhan University of Technology(Materials Science) 2020年第6期35卷 1090-1097页

作者：邵玲吴素君 PENG Wenya DATYE Amit ju hongbo LIU Ying Research Institute of Zhejiang University-Taizhou Zhejiang UniversityTaizhou 318000China School of Materials Science and Engineering Beihang UniversityBeijing 100191China AECC Hunan Aviation Powerplant Research Institute Zhuzhou 412000China Department of Mechanical Engineering&Materials Science Yale UniversityNew HavenCT 06511USA Key Laboratory of Advanced Welding Technology of Jiangsu Province Jiangsu University of Science and TechnologyZhenjiang 212003China Institute of Technology of Aircraft Engine Beijing Research Institute of Aviation EngineeringBeijing 100024China

Based on the investigated microstructure of different zones in the annealed automatic gas tungsten arc weld joint of TA16 and TC4 titanium alloys,the mechanical property of them was assessed under fatigue crack growth rate *** evaluation of fatigue crack growth rate,three points bending specimens were *** correlation between the range of stress intensity factor and crack growth rate was determined in different zones of the annealed weld *** crack growth rates were obviously different in different zones of weld joint of dissimilar titanium alloys,due to their different *** electron microscope examinations were conducted on the fracture surface in order to determine the relevant fracture mechanisms and crack growth mechanisms with respect to the details of microstructure.

关键词： dissimilar titanium alloys joining weld joint microstructure fatigue crack growth rate fracture

Classification of Alpine Wetlands Based on Feature Indices of Remote Sensing Image

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Classification of Alpine Wetlands Based on Feature Indices o...

“材料科学基础”课程教学实践及改革与创新研究

2011 International Conference on Advanced Materials in Microwaves and Optics（AMMO 2011）

作者： Wentao Zou Huaiqing Zhang hongbo ju Hua Liu Research Institute of Forest Resource Information Techniques CAF

Based on the brightness, greenness, humidity indices after Tasseled Cap transformation, NDWI and DEM. Extracting the alpine wetland information in source regions of three Rivers. Result shows that: the humidity can be used to distinguish wetland types from non-wetland classes, brightness component is effective in grassland extracting, while bare rock and gravel land, sand land etc. could be distinguished through its high value on lightness component. Elevation and slope component could be taken as the threshold variable in distinguishing the marsh and bare rock and gravel land. It shows that RS feature index based classification method used on Alpine wetland could improve the overall accuracy by 10.71% and Kappa index by 0.1250 after comparing with the maximum likelihood method. The result indicates that, the method based on indices got from image band transformation is an effective way of alpine wetlands information remote sensing extracting.

关键词： Alpine wetland information exacting lightness,greenness and humidity component after tasseled cap transformation NDWI accuracy comparison

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江苏科技信息 2022年第12期39卷 70-72页

作者：鞠洪博汪然江苏科技大学江苏镇江212000

文章介绍了“材料科学基础”课程的发展起源,立足于实践教学中发现教学当中的不足。通过对课程教学方式做出改革,来提高学生的学习兴趣和科研能力,并对未来教学改革做出展望。

关键词：材料科学教学方法改革创新

选区激光熔化高强Al-(Mn,Mg)-(Sc,Zr)合金成形性及力学性能

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金属学报 2022年第8期58卷 1044-1054页

作者：耿遥祥唐浩许俊华张志杰喻利花鞠洪博江乐简江林江苏科技大学材料科学与工程学院镇江212003

基于选区激光熔化(SLM)技术熔体急冷的特点,通过同时增加(Mn+Mg)和(Sc+Zr)合金化元素的含量,设计了SLM专用Al-(Mn,Mg)-(Sc,Zr)合金,系统研究了时效温度对合金组织和力学性能影响。结果表明,合金表现出良好的SLM成形性,不同激光扫描速率... 详细信息

基于选区激光熔化(SLM)技术熔体急冷的特点,通过同时增加(Mn+Mg)和(Sc+Zr)合金化元素的含量,设计了SLM专用Al-(Mn,Mg)-(Sc,Zr)合金,系统研究了时效温度对合金组织和力学性能影响。结果表明,合金表现出良好的SLM成形性,不同激光扫描速率下制备样品的致密度均超过99.0%。样品具有典型的熔池状显微结构,熔池边界为等轴晶,熔池内部包含少量的柱状晶,晶粒的平均尺寸约为4μm。经低温(≤350℃)时效处理后,由于Al_(3)Sc纳米颗粒的大量析出,使得样品的力学性能大幅提升。样品的最大Vickers硬度为(218±5)HV,最大压缩屈服强度和抗压强度分别达到(653±3)和(752±7)MPa,所有样品的压缩延伸率均超过60%。合金的强度超过现有报道的大多数SLM成形铝合金及经T6处理的AA7075铝合金。多种强化机制共同作用使得SLM成形Al-(Mn,Mg)-(Sc,Zr)合金具有高强度。

关键词：选区激光熔化 Al-(Mn Mg)-(Sc Zr)合金时效处理力学性能

选区激光熔化Al-Si-Mg-Zr合金的组织和力学性能

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稀有金属材料与工程 2023年第3期52卷 1087-1093页

作者：吕洪伟张志杰罗金杰耿遥祥鞠洪博喻利花许俊华江苏科技大学材料科学与工程学院江苏镇江212003 昆山国力电子科技股份有限公司江苏昆山215333

针对选区激光熔化(SLM)高Mg含量AlSiMg3合金成形性差的缺点,通过Zr进行合金化,研究了工艺参数对SLM成形高Mg含量Al-Si-Mg-Zr合金的成形性及时效处理对合金组织和力学性能的影响。结果表明,SLM成形Al-Si-Mg-Zr合金的熔池边界处形成了大... 详细信息

针对选区激光熔化(SLM)高Mg含量AlSiMg3合金成形性差的缺点,通过Zr进行合金化,研究了工艺参数对SLM成形高Mg含量Al-Si-Mg-Zr合金的成形性及时效处理对合金组织和力学性能的影响。结果表明,SLM成形Al-Si-Mg-Zr合金的熔池边界处形成了大量的细小等轴晶,从而有效地避免了样品在成形过程中裂纹的产生,增加了样品的SLM成形性,不同激光功率和激光扫描速度下获得样品的孔隙率均低于0.3%。拉伸测试结果表明,成形态样品的屈服强度(YS)为(426±8)MPa,极限抗拉强度(UTS)为(464±12)MPa。经165℃时效处理后,由于α-Al晶粒内部纳米强化相的增多,样品的强度增加明显,时效样品的最大YS和UTS分别为(482±11)MPa和(522±10)MPa。本研究获得SLM成形Al-Si-Mg-Zr样品的强度高于目前商用的SLM成形Al-Si-Mg合金。

关键词：选区激光熔化成分优化 Al-Si-Mg-Zr合金显微组织力学性能

Erratum to:Influence of process parameters and aging treatment on the microstructure and mechanical properties of AlSi8Mg3 alloy fabricated by selective laser melting

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International Journal of Minerals,Metallurgy and Materials 2022年第11期29卷 2086-2086页

Erratum to:International Journal of Minerals, Metallurgy and MaterialsVolume 29, Number 9, September 2022, Page 1770https://***/10.1007/s12613-021-2287-1The original version of this article unfortunately contained a mistake due to the PDF file conversion through different softwares. The presentation of Fig. 13 in original version was incorrect.

关键词： microstructure alloy aging

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9种食用菌对云杉木质素及纤维素降解的研究

林业科技 2008年第3期33卷 22-24页

作者：鞠洪波东北林业大学黑龙江哈尔滨150040

用9种食用菌对云杉的降解作用进行了研究,在变色圈试验中发现,只有金针菇优先降解纤维素,其余8种均优先降解木质素。降解试验中显示,菌落直径与变色圈比值(d1/d2)的大小与降解率没有相关性。结合两部分试验可知:菌株的降解能力与选择性... 详细信息

用9种食用菌对云杉的降解作用进行了研究,在变色圈试验中发现,只有金针菇优先降解纤维素,其余8种均优先降解木质素。降解试验中显示,菌落直径与变色圈比值(d1/d2)的大小与降解率没有相关性。结合两部分试验可知:菌株的降解能力与选择性无关。杏鲍菇对木质素和纤维素的降解能力均较强,为降解云杉的优势菌株。

关键词：变色圈云杉降解木质素纤维素