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Review ： State-of-the-Art of Stamping-Forging Process with Sheet Metal Blank

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Journal of Harbin Institute of Technology(New Series) 2017年第3期24卷 1-16页

作者： Xinyun Wang junsong jin Lei Deng State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science and TechnologyWuhan 430074 China

The aim of this paper is to review the state-of-the-art SFPs and their applications,and to provide a guide for researchers and engineers working in this *** SFPs are classified according to the combination ways of stamping and forging *** process principle of each combination is reviewed,with its applications *** state-of-the-art of SFPs suggests that future work in this field should focus on the development of high-strength die materials,better lubrication control methods,forming machines with intelligent control capacity and special functions,and some new SFPs for high strength or ultra-high strength materials.

关键词： sheet metal stamping forging stamping-forging process

Enhancing constitutive description and workability characterization of Mg alloy during hot deformation using machine learning-based Arrhenius-type model

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Journal of Magnesium and Alloys 2024年第7期12卷 3003-3023页

作者： jinchuan Long Lei Deng junsong jin Mao Zhang Xuefeng Tang Pan Gong Xinyun Wang Gangfeng Xiao Qinxiang Xia State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology1037 Luoyu RoadWuhan 430074China School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510640China

Hot deformation is a commonly employed processing technique to enhance the ductility and workability of Mg ***,the hot deformation of Mg alloy is highly sensitive to factors such as temperature,strain rate,and strain,leading to complex flow behavior and an exceptionally narrow processing window for Mg *** overcome the shortcomings of the conventional Arrhenius-type(AT)model,this study developed machine learning-based Arrhenius-type(ML-AT)models by combining the genetic algorithm(GA),particle swarm optimization(PSO),and artificial neural network(ANN).Results indicated that when describing the flow behavior of the AQ80 alloy,the PSO-ANN-AT model demonstrates the most prominent prediction accuracy and generalization ability among all ML-AT and AT ***,an activation energy-processing(AEP)map was established using the reconstructed flow stress and activation energy fields based on the PSO-ANN-AT *** validations revealed that this AEP map exhibits superior predictive capability for microstructure evolution compared to the one established by the traditional interpolation methods,ultimately contributing to the precise determination of the optimum processing *** findings provide fresh insights into the accurate constitutive description and workability characterization of Mg alloy during hot deformation.

关键词： Constitutive description Workability characterization Machine learning Mg alloy Hot deformation

A modified maxwell-pulse thermoplastic constitutive model of in-situ Ta-particle reinforced Zr-based bulk metallic glass composites

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Progress in Natural Science:Materials International 2024年第4期34卷 753-766页

作者： Pan Gong Zhuang Wang Guoqing Yu Maojun Li Xin Zhuo Xuefeng Tang Mao Zhang Lei Deng junsong jin A.A.Churakova Xinyun Wang State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle Hunan University Institute of Molecule and Crystal Physics Ufa Federal Research Center RAS

The impact of different Ta contents on the mechanical properties and thermoplastic forming ability of in-situ Taparticle reinforced Zr–Cu–Al–Ni bulk metallic glass composites was studied. The composition(Zr55Cu30Al10-Ni5)94Ta6with the best comprehensive performance was chose for a systematic investigation into its thermoplastic behavior in the supercooled liquid region（SLR）, with quantitative analysis conducted by the strain rate sensitivity index and activation volume. The steady-state flow stress and the stress overshoot intensity were augmented with deformation temperature decreasing, strain rate increasing, and the addition of the secondary phase, leading to a transition from Newtonian to non-Newtonian flow regime. The addition of the secondary phase deteriorated the rheological properties of the material. To solve the problem that the Maxwell-Pulse constitutive model showed an inability to accurately describe the steady-state flow process. A modified constitutive relationship, introducing the effect of the volume fraction of Ta particles on viscosity and elastic modulus in the steady-state flow process which was ignored in Maxwell-pulse model, was established. The fitting results of the true stress-strain curves of the modified Maxwell-pulse constitutive model were in better agreement with the experimental date than those of the Maxwell-pulse constitutive model, with higher prediction accuracy. The modified constitutive model well predicted the thermoplastic deformation behavior of(Zr55Cu30Al10Ni5)*** influence mechanism of Ta particles on the flow behavior was explained that Ta particles increased the viscosity of amorphous matrix, thereby hindering its flow and ultimately leading to an increase in flow stress.

关键词： Bulk metallic glass composites Supercooled liquid region Thermoplastic deformation Constitutive model Influence mechanism

Systematic analysis of distinct flow characteristics and underlying microstructural evolution mechanisms of a novel fine-grained P/M nickel-based superalloy during isothermal compression

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Journal of Materials Science & Technology 2023年第31期162卷 57-73页

作者： Hongning Wen junsong jin Xuefeng Tang Xinyun Wang Heyang Yang Yiding Zhang Lei Deng Pan Gong Qingsong Wei Yingjie He Jianzheng Guo State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Shenzhen Wedge Central South Research Institute Co. Ltd.Shenzhen 518000China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Isothermal forging(IF)is an effective method for forming difficult-to-deform materials like P/M *** the isothermal compression microstructural evolution mechanism of a novel P/M s-peralloy provides the basis for its optimized IF *** this study,the isothermal compression tests of a novel fine-grained P/M nickel-based superalloy were carried out at 1000-1150℃with strain rates of 0.001-0.01 s^(−1).The results indicated that the alloy exhibits three distinct flow characteristics:continuous softening after reaching the peak stress,near-steady superplastic flow,and discontinuous hardening,corresponding to different strain rate sensitivity exponent(m)*** microstructural evolution mechanisms,including grain boundary sliding(GBS),dynamic recrystallization(DRX),and grain growth,are dominated in different m-value ***,different roles of primaryγ’play in microstruc-tural evolution were clarified.A moderate fraction of primaryγ’with 8.5%-14.2%can well coordinate the GBS and hinder excessive grain growth at a high m value domain(m>0.4).When 0.2

关键词： P/M nickel-based superalloy Flow characteristic Microstructural evolution Superplastic flow Dynamic recrystallization

Novel experimental strategy towards temperature inhomogeneity during spark plasma sintering of metallic glasses

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Advanced Powder Materials

Advanced Powder Materials 2023年第3期2卷 1-10页

作者： Huaping Ding Xiaoqian Bao Mao Zhang junsong jin Lei Deng Kefu Yao Atefeh Solouk Pan Gong Xinyun Wang State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing30 Xue Yuan RoadBeijing 100083China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Biomedical Engineering Department Amirkabir University of Technology(Tehran Polytechnic)TehranIran

Despite the importance of temperature distribution in spark plasma sintering of metallic glasses,its quantiﬁcation has been experimentally *** work proposes an experimental strategy to determine the sintering temperature by establishing a quantitative relationship between the temperature-thermal *** reproduced the thermal proﬁles of spark plasma sintering by isothermal annealing and found a correlation between annealing temperature and isothermal crystallization *** strong correlation indicates the temperature-dependent structural evolution of glassy *** isothermal crystallization time as the measuring gauge,we correlated the annealing temperature to the sintering temperature and obtained the sample temperature *** sample temperature is at least 19C higher than the nominal temperature of 425C measured by the ***,the sample temperature shows a hump-shaped pattern closely correlated with the current *** maximum temperature of 453C occurs on the sample/punches contact *** heterogeneity within the sample induces diverse microstructures and porous *** elucidate that the temperature inhomogeneity is intrinsic,given the presence of contact *** resistances affect the current distribution and heat transfer,resulting in a larger temperature gradient than the traditional powder metallurgy process.

关键词： Metallic glass Spark plasma sintering Temperature inhomogeneity Isothermal crystallization time Current distribution

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工艺参数对液压活塞缸套温锻质量的影响

热加工工艺 2019年第17期48卷 96-98页

作者：戴护民金俊松广东机电职业技术学院广东广州510550 华中科技大学材料科学与工程学院湖北武汉430074

为了满足液压活塞缸套对力学性能的要求,本文提出用温锻工艺代替传统的铸造工艺,并对其进行了生产。重点研究了锻造过程中锻件和模具的温度、应力的分布,并研究了初始模具温度对温度分布的影响。结果表明,提高模具的预热温度有利于坯料... 详细信息

为了满足液压活塞缸套对力学性能的要求,本文提出用温锻工艺代替传统的铸造工艺,并对其进行了生产。重点研究了锻造过程中锻件和模具的温度、应力的分布,并研究了初始模具温度对温度分布的影响。结果表明,提高模具的预热温度有利于坯料保温,降低表面与心部温差;增大模具预热温度能提高锻件温度分布的均匀性,降低应力集中。

关键词：活塞缸套温锻工艺参数 Deform软件

液态模锻温度对镁合金汽车转向节臂性能的影响

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热加工工艺 2020年第7期49卷 109-112,115页

作者：戴护民金俊松广东机电职业技术学院广东广州510550 华中科技大学材料科学与工程学院湖北武汉430074

采用不同的液态模锻工艺参数进行了汽车用AZ80镁合金转向节臂的成形,并进行了试样的耐磨性能和冲击性能的测试与分析。结果表明:随浇注温度从690℃增至770℃,模具预热温度从200℃增至320℃,试样的耐磨性能和冲击性能均先提高后下降。与... 详细信息

采用不同的液态模锻工艺参数进行了汽车用AZ80镁合金转向节臂的成形,并进行了试样的耐磨性能和冲击性能的测试与分析。结果表明:随浇注温度从690℃增至770℃,模具预热温度从200℃增至320℃,试样的耐磨性能和冲击性能均先提高后下降。与690℃浇注相比,当浇注温度提高到750℃时试样的磨损体积减小31%(从26.0×10-3mm3到17.9×10-3mm3),冲击吸收功增大27%(从41.1J到52.2J);与模具预热200℃相比,当模具预热温度提高到280℃时试样的磨损体积减小36%(从28.0×10-3mm3到17.9×10-3mm3),冲击吸收功增大24%(从42.1J到52.2J)。液态模锻AZ80镁合金汽车转向节臂的浇注温度和模具预热温度分别优选为750℃和280℃。

关键词：转向节臂液态模锻浇注温度模具预热温度耐磨性能冲击性能

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高速冲击连接技术的研究进展

中国机械工程 2021年第5期32卷 600-610页

作者：杜飞王新云邓磊夏巨谌金俊松华中科技大学材料成形与模具技术国家重点实验室武汉430074

与传统的熔焊工艺不同,高速冲击连接可以有效地减小热影响区和连续金属间化合物的形成,从而保证结合区域的机械性能,并且几乎能够实现任意金属材料间的连接,具有广阔的发展和应用前景。高速冲击连接可以分为驱动飞板高速移动和冲击连接... 详细信息

与传统的熔焊工艺不同,高速冲击连接可以有效地减小热影响区和连续金属间化合物的形成,从而保证结合区域的机械性能,并且几乎能够实现任意金属材料间的连接,具有广阔的发展和应用前景。高速冲击连接可以分为驱动飞板高速移动和冲击连接两个过程,主要包括爆炸连接、电磁脉冲连接、激光冲击连接和汽爆连接四种工艺。简要介绍了四种冲击连接过程的基本原理、特点及应用范围,综述了冲击连接过程中的冶金行为、界面现象、力学性能、焊接工艺窗口和数值模拟等方面的最新进展,分析了目前研究中存在的一些问题,为进一步的研究提供了依据和参考。

关键词：高速冲击连接连接技术组织特征力学性能数值模拟

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冷精锻修形圆锥齿轮的齿形设计

中国机械工程 2006年第19期17卷 2038-2042页

作者：金俊松夏巨谌胡国安陈霞李大才胡明发华中科技大学塑性成形模拟及模具技术国家重点实验室武汉430074 东风汽车精工齿轮厂十堰442716

在充分考虑圆锥齿轮的传动特点、安装误差对齿轮传动和使用寿命的影响、传动过程中的接触变形对传动精度和边缘接触的影响,以及圆锥齿轮闭式冷精锻成形后能顺利出模的基础上,运用赫兹接触理论与有限元相结合的方法进行齿向和齿高两个方... 详细信息

在充分考虑圆锥齿轮的传动特点、安装误差对齿轮传动和使用寿命的影响、传动过程中的接触变形对传动精度和边缘接触的影响,以及圆锥齿轮闭式冷精锻成形后能顺利出模的基础上,运用赫兹接触理论与有限元相结合的方法进行齿向和齿高两个方向修形,提出了确定修形量的方法和确定修形鼓面中心位置的方法,设计出鼓形齿面。实验证明,使用该方法设计修形的圆锥齿轮在冷精锻过程能够顺利成形,并将有效地提高齿轮的传动精度和使用寿命。

关键词：冷精锻圆锥齿轮齿向修形齿廓修形