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Enhancement of mechanical and tribological performance of Ti-6Al-4V alloy by laser surface alloying with inconel 625 and SiC precursor materials

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Friction 2024年第9期12卷 2089-2107页

作者： Hao-Ran CHENG Ki-Hoon SHIN Hong Seok KIM Department of Mechanical Engineering Graduate School of Seoul National University of Science and TechnologySeoul 01811Republic of Korea Department of Mechanical and Automotive Engineering Seoul National University of Science and TechnologySeoul 01811Republic of Korea

This study focused on producing metal matrix composite(MMC)coatings on Ti–6Al–4V alloy through laser surface alloying using a novel combination of inconel 625 and SiC precursor *** ratios of alloying powders were examined to evaluate surface properties such as microhardness,wear resistance,and friction coefficient,along with analyzing the phase composition and microstructure of the *** in situ synthesized MMC coatings exhibited the presence ofα-Ti,NiTi,NiTi_(2),and TiC ***,Ti_(5)Si_(3)andα-Ti/Ti_(5)Si_(3)eutectic structures were observed when the SiC content exceeded 20%.In comparison to the titanium substrate,the MMC coating significantly enhanced microhardness by over threefold and reduced wear by 95%.However,it was crucial to carefully select the appropriate combination of alloying powders to avoid a substantial decrease in friction performance and excessive formation of *** a comparative analysis of experimental results,the optimal precursor material composition was identified as 85%inconel 625 and 15%*** study demonstrated the effective utilization of inconel 625 and SiC alloying materials to enhance the surface properties of titanium alloys,thereby expanding their application in challenging environments.

关键词： titanium alloy inconel 625 SiC ceramic laser surface alloying metal matrix composite(MMC)

FEM analysis and experimental investigation of force and chip formation on hot turning of inconel 625

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Defence Technology（防务技术） 2019年第6期15卷 853-860页

作者： Asit Kumar Parida Kalipada Maity Indian Institute of Technology Delhi Department of Mechanical EngineeringIndia National Institute of Technology Rourkela Department of Mechanical EngineeringIndia

This study investigates the hot machining of inconel 625 alloy by using flame heating under different machining conditions using finite element analysis(FEM).Turning tests are performed at different cutting speeds and heating temperatures using uncoated carbide insert by DEFORM *** reduction in cutting force and tool wear has achieved at heating conditions compared to room *** tool life is achieved at the highest cutting speed and higher heating temperature *** heating conditions of the 600℃ continuous chip is formed whereas at room temperature saw-tooth chip formation is observed.A significant agreement is achieved between simulated and experimental cutting forces and chip *** effect of feed rates and depth of cuts are also studied experimentally during turning of inconel 625 in a systematic manner.

关键词： Hot machining Force inconel 625 Surface roughness Chip morphology

PHASE TRANSFORMATION AND CHARACTERISTICS IN FRECKLE AREAS FOR inconel 625 SUPERALLOY

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Acta Metallurgica Sinica(English Letters) 2005年第1期18卷 47-54页

作者： J.X.Dong M.C.Zhang Y.P.Zeng X.S.Xie UniversityofScienceandTechnologyBeijing Beijing100083China

The freckle formation and their phase characterizatics in freckle areas were investigated by means of microstructure analysis approaches and a thermodynamic equilibrium phase calculation method in an inconel 625 allay. These results show that in freckle areas a large number of M6C, MC, Laves and δ phases precipitate in grain boundaries even within grain due to the enrichment and segregation of Mo and Nb during solidification, which results in almost of these freckle areas covered by these complex precipitated phases and induces small grains in freckle areas. Equilibrium phase and liquid segregation calculation can give a reasonable interpretation of the freckle feature for this alloy.

关键词： freckle superalloy inconel 625 thermodynamic calculation

High-temperature deformation behavior and processing map of the as-cast inconel 625 alloy

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Rare Metals 2021年第8期40卷 2083-2091页

作者： Zhi Jia Ze-Xi Gao Jin-Jin Ji De-Xue Liu Ting-Biao Guo Yu-Tian Ding School of Material Science and Engineering Lanzhou University of TechnologyLanzhou730050China Key State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou730050China School of Materials Engineering Lanzhou Institute of TechnologyLanzhou730050China

A short process of inconel 625 alloy tube was developed to solve the problems of the traditional extrusion process,and particular attention was paid on the hot deformation behavior of the as-cast inconel 625 *** hot compression experiments were performed to study the hot deformation behavior of inconel 625 in the temperature range of 900-1200℃ and strain rate range of0.01-10.00 s^(-1) by *** hot compressed microstructure was examined to study the effects of temperature and strain rate on the microstructural characteristic by electron backscatter diffraction(EBSD).The results show that the processing maps were greatly influenced by the temperature rather than the strain *** is found that with the strain increasing,the instability zone gradually turned to the low-temperature and low strain rate area,while the range of high-temperature instability area *** optimum condition of the as-cast inconel 625 alloy was determined as high strain rate region(temperature of1100-1200℃,strain rate of 1.00-10.00 s^(-1))with the dissipation efficiency of above *** illustrated by microstructural characteristic of EBSD analysis,the perfect dynamic recrystallization occurred and fine grain structure was obtained under this deformation conditions.

关键词： inconel 625 Hot deformation behavior Constitutive equation Microstructure Processing map

Prediction of Formation Quality of inconel 625 Clads Using Support Vector Regression

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Journal of Shanghai Jiaotong university(Science) 2020年第6期25卷 746-754页

作者： GUO Longlong WU Zebing HE Yutian WEI Wenlan XIA Shengyong JU Luyan WANG Bo ZHANG Yong Mechanical Engineering College Xian Shiyou UniversityXi'an 710065China Chongqing Engineering Technology Research Center for Light Alloy Materials and Processing Chongqing 404000China Refining and Chemical Plant of Yumen Oilfield Company Jiuquan 735000GansuChina

The process parameters of pulsed tungsten inert gas(PTIG)have a significant infuence on the forma-tion quality,mechanical properties and corrosion resistance of the weld *** PTIG was utilized to deposit inconel 625 clads with various combinations of the process parameters,which were determined by the central composite design(CCD)*** on the experimental results,the relationship between process parameters of PTIG and formation quality of the inconel 625 clads was established using support vector regression(SVR)with different kernel functions,including polynomial kernel function,radial basis function(RBF)kernel function,and sigmoid kernel *** results indicate that the kernel functions have a great influence on the prediction of height,width and *** models with RBF kernel function feature the best goodness of fitting and the most accurate against the other SVR models for estimating the height and the ***,the model with polynomial kernel function is superior to the other SVR models for predicting the ***,the prediction performance of the SVR models was compared with the general regression *** results demonstrate that the optimized SVR model is much better than the general regression model in the prediction performance.

关键词： pulsed tungsten inert gas(PTIG) inconel 625 formation quality,prediction support vector regres-sion(SVR)

TiC含量对激光选区熔化inconel 625合金微观组织及表面摩擦磨损性能的影响

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中国表面工程 2021年第1期34卷 76-84页

作者：褚清坤余春风邓朝阳胡新广闫星辰胡永俊刘敏广东工业大学材料与能源学院广州510006 广东省科学院新材料研究所现代材料表面工程技术国家工程实验室广州510650 五邑大学智能制造学部江门529020

为了提高3D打印镍基高温合金强度、硬度及耐磨性能,使用激光选区熔化技术(Selective laser melting,SLM)制备添加不同质量分数TiC增强inconel 625合金材料,并对比添加不同质量分数TiC(4 wt.%和8 wt.%)所制备的SLM TiC/inconel 625试样... 详细信息

为了提高3D打印镍基高温合金强度、硬度及耐磨性能,使用激光选区熔化技术(Selective laser melting,SLM)制备添加不同质量分数TiC增强inconel 625合金材料,并对比添加不同质量分数TiC(4 wt.%和8 wt.%)所制备的SLM TiC/inconel 625试样的摩擦磨损性能。结合X射线衍射仪(XRD),金相显微镜(OM),扫描电子显微镜(SEM)及能谱分析(EDS)等材料表征手段对TiC/inconel 625试样的物相分布,微观组织结构及磨损前后的元素分布进行对比分析。结果表明,随着TiC含量的增高,SLM TiC/inconel 625硬度从325 HV_(0.2)(不含TiC)升高到了587 HV0.2(SLM 8 wt.%TiC/inconel 625),磨损率也由22.4×10^(-5)mm^(3)/(N·m)下降为9.8×10^(-5)mm^(3)/(N·m)。其中,平均摩擦磨损系数最小的为SLM 4 wt.%TiC/inconel 625(COF=0.47)。综合对比可以发现通过添加适量的TiC颗粒可以有限改善SLM inconel 625的硬度及耐磨损性能。

关键词：激光选区熔化 inconel 625 TiC 微观组织摩擦磨损

CuCrZr/inconel 625异种材质合金管激光焊接工艺与接头界面组织性能

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焊接学报 2023年第6期44卷 35-40,I0005页

作者：王徐建檀财旺何平范成磊郭迪舟董海义中国科学院高能物理研究所北京100049 哈尔滨工业大学(威海) 威海264209 哈尔滨工业大学先进焊接与连接国家重点实验室哈尔滨150001

对CuCrZr与inconel 625异种材料合金管进行激光对焊试验,观察分析各组试样的接头形貌、微观组织、化学成分以及力学性能分析,试验结果表明,在1100~1300 W的激光功率,+20 mm的离焦量以及14.5 mm/s的焊接速度,20 L/min的99.9%Ar气保护时... 详细信息

对CuCrZr与inconel 625异种材料合金管进行激光对焊试验,观察分析各组试样的接头形貌、微观组织、化学成分以及力学性能分析,试验结果表明,在1100~1300 W的激光功率,+20 mm的离焦量以及14.5 mm/s的焊接速度,20 L/min的99.9%Ar气保护时焊缝成形良好,可实现inconel 625/CuCrZr管的全位置焊接,焊缝内部缺陷较少,但随着焊接功率的增加焊缝下塌现象明显;inconel 625/CuCrZr焊缝与母材连接界面元素过渡明显,由于Ni元素,Cu元素互溶,在焊缝内部主要以富Ni的Ni/Cu固溶体存在,在激光焊接过程中CuCrZr母材受激光搅拌作用,有部分铜母材被“卷入”焊缝内,待工件冷却后保留在焊缝内部;inconel 625/CuCrZr管激光焊接接头抗拉强度较高,晶粒粗大的CuCrZr的热影响区位置是主要断裂位置,断裂形式以韧性断裂为主.

关键词： inconel 625 CuCrZr 异种材料合金管激光焊接界面组织接头性能

激光选区熔化inconel 625合金的高温热腐蚀行为

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中国有色金属学报 2024年第6期34卷 2030-2042页

作者：赵斌王琪霖任延杰韩林虎蒋东方长沙理工大学能源与动力工程学院长沙410083 浙江科技大学机械与能源工程学院杭州310023 国网能源研究院有限公司北京102209

采用电化学阻抗谱对比研究了激光选区熔化(Selective laser melting,SLM)和轧制inconel 625合金在600℃覆盖50%KCl+50%Na_(2)SO_(4)(质量分数)盐膜时的电化学腐蚀行为。结果表明:SLM inconel 625合金的腐蚀电化学阻抗谱呈双容抗特征,腐... 详细信息

采用电化学阻抗谱对比研究了激光选区熔化(Selective laser melting,SLM)和轧制inconel 625合金在600℃覆盖50%KCl+50%Na_(2)SO_(4)(质量分数)盐膜时的电化学腐蚀行为。结果表明:SLM inconel 625合金的腐蚀电化学阻抗谱呈双容抗特征,腐蚀过程受荷电离子迁移控制;轧制inconel 625合金由高频段的容抗弧和低频段的直线组成,表明腐蚀受扩散控制;SLM inconel 625合金的腐蚀产物层为Cr_(2)O_(3)/Ni_(3)S_(2)多层交替结构,而轧制inconel 625合金表面腐蚀产物由Cr_(2)O_(3)和NiO的混合物组成,存在明显的内硫化现象;SLM inconel 625合金较多的位错及亚晶粒促进了铬元素向外扩散并与氧发生反应,改变了合金表面的硫分压,进而影响了合金表面腐蚀产物膜的组成及结构。

关键词：热腐蚀激光选区熔化 inconel 625 电化学阻抗谱位错密度

CuCrZr/inconel 625电子束焊接接头组织与性能

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焊接学报 2022年第9期43卷 92-97,I0009页

作者：王徐建王廷何平范成磊郭迪舟董海义中国科学院高能物理研究所北京100049 哈尔滨工业大学(威海) 威海264209 哈尔滨工业大学先进焊接与连接国家重点实验室哈尔滨150001

对CuCrZr/inconel 625管件进行不填丝电子束对接焊试验,观察分析各组试样的接头形貌、微观组织、化学成分以及力学性能分析.结果表明,当偏束距离为0.6和0.8 mm时,CuCrZr/inconel 625接头焊缝成形良好,均呈现出上、下宽,中间窄的哑铃型;... 详细信息

对CuCrZr/inconel 625管件进行不填丝电子束对接焊试验,观察分析各组试样的接头形貌、微观组织、化学成分以及力学性能分析.结果表明,当偏束距离为0.6和0.8 mm时,CuCrZr/inconel 625接头焊缝成形良好,均呈现出上、下宽,中间窄的哑铃型;随着偏束距离的增大,焊缝中的Cu含量增加;CuCrZr/inconel625管件接头焊缝中的相主要是圆球形的Ni基固溶体以及作为基体的Cu固溶体,使得焊缝具有较好的综合力学性能.当偏束距离0.8 mm时,试样最大抗拉强度达到304 MPa,断裂于CuCrZr侧热影响区.

关键词： inconel 625 CuCrZr 薄壁管电子束焊接界面组织力学性能