Materialwissenschaft und Werkstofftechnik最新文献_第8页

Optimization of vacuum isothermal quenching process and microstructure analysis of die steel Cr12MoV Optimierung des isothermen Vakuumabschreckens und Gefügeanalyse des Gesenkstahls Cr12MoV 真空等温淬火工艺的优化和钢的微观结构分析Cr12MoV等温真空阻尼器的优化和钢的结构分析Cr12MoV

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-20 DOI: 10.1002/mawe.202400122

S. D. Hu, Y. K. Meng, X. F. Tang, G. B. Shao

{"title":"Optimization of vacuum isothermal quenching process and microstructure analysis of die steel Cr12MoV\u0000 Optimierung des isothermen Vakuumabschreckens und Gefügeanalyse des Gesenkstahls Cr12MoV","authors":"S. D. Hu, Y. K. Meng, X. F. Tang, G. B. Shao","doi":"10.1002/mawe.202400122","DOIUrl":"https://doi.org/10.1002/mawe.202400122","url":null,"abstract":"This study first employed a vacuum isothermal gas quenching process to heat-treat Cr12MoV in an attempt to achieve a mixed structure of martensite and lower bainite. Based on an analysis of the impact of different isothermal gas quenching process parameters on the properties and microstructure of Cr12MoV steel, with a focus on material impact toughness and Rockwell hardness, the particle swarm optimization method was used to optimize the vacuum gas quenching process parameters for Cr12MoV steel. Using the optimized process parameters, Cr12MoV steel was subjected to vacuum isothermal gas quenching treatment. Microstructure observations and phase analysis revealed that the post-quenching structure consisted of an excellent combination of martensite and lower bainite dual-phase structures, with reduced carbide content and even distribution. After two tempering processes, it was observed that the residual austenite content significantly decreased. The vacuum isothermal gas quenching-tempering process effectively reduced material anisotropy and tool deformation.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 1","pages":"110-121"},"PeriodicalIF":1.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117212","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

Einfluss der Feuerverzinkung auf die mechanischen Eigenschaften des hochfesten Baustahls S620QH Influence of hot-dip galvanizing on the mechanical properties of the high-strength structural steel S620QH 热镀锌对高强度结构钢S620QH机械性能的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-20 DOI: 10.1002/mawe.202400051

T. Pinger, T. Müller, B. Straetmans, C. Kaucke, B. C. Kopanka, J. Wiebe, C. Stallybrass

{"title":"Einfluss der Feuerverzinkung auf die mechanischen Eigenschaften des hochfesten Baustahls S620QH\u0000 Influence of hot-dip galvanizing on the mechanical properties of the high-strength structural steel S620QH","authors":"T. Pinger, T. Müller, B. Straetmans, C. Kaucke, B. C. Kopanka, J. Wiebe, C. Stallybrass","doi":"10.1002/mawe.202400051","DOIUrl":"https://doi.org/10.1002/mawe.202400051","url":null,"abstract":"Die Kombination von Effizienz und Dauerhaftigkeit ist im Hinblick auf die Gestaltung nachhaltiger Konstruktionen von besonderer Bedeutung, entsprechend sind Kenntnisse zur Verzinkung hochfester Stähle von zunehmendem Interesse. Im Rahmen einer vertiefenden Studie wurde am Baustahl S620QH der Einfluss der Verzinkung unter Variation der Verzinkungstemperatur und -dauer auf die mechanischen Eigenschaften untersucht. Hierzu wurden sowohl Zug- und Kerbschlagbiegeversuche als auch begleitende Materialsimulationen durchgeführt. Im Ergebnis zeigt sich, dass bei der klassischen Verzinkung im Bereich üblicher Prozessparameter, nämlich einer Verzinkungstemperatur im Bereich von 440 °C bis 460 °C sowie Tauchdauern bis 20 Minuten, keine nennenswerten Effekte auf die Eigenschaften des Stahls auftreten. Bei der Hochtemperaturverzinkung wirkt sich die Temperatur in Höhe von 550 °C bei langen Tauchdauern nicht auf die Festigkeit und Duktilität, jedoch zähigkeitsmindernd auf die Stahlsorte S620QH aus. Die parallelen simulativen Untersuchungen weisen darauf hin, dass durch eine erneute Erwärmung die Ausscheidungshärtung mit steigender Temperatur, temperaturabhängig beschleunigt und weitere feine Ausscheidungen ermöglicht werden und dies für den Effekt ursächlich ist. Daraus wird die Empfehlung zur Einhaltung einer Anlasstemperatur von mindestens 580 °C für die letzte Wärmebehandlung des Vergütungsprozesses von warmgefertigten Hohlprofilen nach DIN EN 10210-3 abgeleitet.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 1","pages":"66-76"},"PeriodicalIF":1.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117414","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

Estimating the crashworthiness performances of crushboxes using artificial neural network Einschätzung der Crashsicherheit von Schockabsorbersystemen mittels künstlicher neuronaler Netzwerke 估计使用人工神经网络的粉碎盒的碰撞性能人工神经网络的碰撞安全

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-20 DOI: 10.1002/mawe.202400032

O. Koçar, Ö. Adanur, F. Varol, A. S. Guldibi

{"title":"Estimating the crashworthiness performances of crushboxes using artificial neural network\u0000 Einschätzung der Crashsicherheit von Schockabsorbersystemen mittels künstlicher neuronaler Netzwerke","authors":"O. Koçar, Ö. Adanur, F. Varol, A. S. Guldibi","doi":"10.1002/mawe.202400032","DOIUrl":"https://doi.org/10.1002/mawe.202400032","url":null,"abstract":"Studies on the development of energy absorbing systems that minimize vehicle chassis damage in traffic accidents are increasing day by day. Many designs have been made in the studies on crushboxes used to absorb the energy released in the event of an accident. These design works are quite costly and take a long time. In this study, to design crushboxes faster and more economically was estimated using artificial neural network. The input layer of the artificial neural network model consists of three different materials, thicknesses (between 0.8 and 2.2 mm) and three different initial speeds. In the artificial neural network model, 42 different models were created by changing the different training functions (training, trainlm and trainrp), transfer functions (tansig and logsig) and the number of neurons in the hidden layer (between 9 and 33). R2 and root mean square error (RMSE) methods were used to evaluate the efficiency of artificial neural network models. The training function was found to be highly accurate (R2: 0.99999 and root mean square error: 0.314727E-05) when the training function was “trainlm” and the number of neurons in the hidden layer was 33. The training and testing results of the artificial neural network model show that artificial neural networks can be used to estimate the specific energy absorption/energy/peak crush force value of crushboxes.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 1","pages":"95-109"},"PeriodicalIF":1.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117403","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

Interface microstructure and mechanical properties of selective laser melting-formed CuCrZr alloy for 316 L stainless steel Grenzflächengefüge und mechanische Eigenschaften selektiver laserstrahlschmelzgeformter CuCrZr-Legierungen an der Fügestelle zum hochlegierten Stahl X2CrNiMo17-12-2 316l不锈钢选择性激光熔融CuCrZr合金的界面微观结构和机械性能高合金钢X2CrNiMo17-12-2接头选择性激光熔融CuCrZr合金的界面结构和机械性能

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-20 DOI: 10.1002/mawe.202400101

Y. Wang, B. Liu, Q. Tang, W. Huo, Z. Li, Y. Bai

{"title":"Interface microstructure and mechanical properties of selective laser melting-formed CuCrZr alloy for 316 L stainless steel\u0000 Grenzflächengefüge und mechanische Eigenschaften selektiver laserstrahlschmelzgeformter CuCrZr-Legierungen an der Fügestelle zum hochlegierten Stahl X2CrNiMo17-12-2","authors":"Y. Wang, B. Liu, Q. Tang, W. Huo, Z. Li, Y. Bai","doi":"10.1002/mawe.202400101","DOIUrl":"https://doi.org/10.1002/mawe.202400101","url":null,"abstract":"A bimetallic structure combines the properties of two constituent materials and has a high comprehensive performance. Selective laser melting has been widely studied for its advantages such as high utilization of raw materials, short processing cycles, and the ability to form complex structures. The 316 L-CuCrZr bimetallic structure was successfully prepared using selective laser melting. Its microstructural analysis and energy spectrum analysis indicated that the 316 L stainless steel and the CuCrZr alloy formed a good interfacial bond and that the elements at the interface exhibited a gradient distribution. The tensile strength of 316 L-CuCrZr was 280.97 MPa, which was close to the strength of the CuCrZr alloy. The interface hardness showed a decreasing trend from that of the stainless steel to that of the copper alloy, which indicated that the interface between the 316 L stainless steel and the CuCrZr alloy was well bonded.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 1","pages":"88-94"},"PeriodicalIF":1.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117404","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

A generalized three-parameters model to describe the strain-life curve under asymmetrical cyclic loading Ein verallgemeinertes Drei-Parameter-Modell zur Beschreibung der Dehnungs-Lebensdauer-Kurve unter asymmetrischer zyklischer Belastung 描述不对称循环负荷下应变寿命曲线的广义三参数模型

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-20 DOI: 10.1002/mawe.202400227

J. Li, R. Wang, X. L. Li, Y. Y. Qiu

引用次数: 0

Correction to “Improved photocatalytic performance via air-plasma modification of titanium dioxide: Insights from experiments and simulations” 对“通过空气等离子体改性二氧化钛提高光催化性能：来自实验和模拟的见解”的更正

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-17 DOI: 10.1002/mawe.202470233

引用次数: 0

Three-dimensional modeling of electromagnetic field and fluid flow during solidification of an aluminum alloy in a pulsed magnetic field Dreidimensionale Modellierung des elektromagnetischen Feldes und der Schmelzeströmung während der Erstarrung einer Aluminium-Legierung in einem gepulsten Magnetfeld 在脉冲磁场中铝合金固化过程中电磁场和流体流动的三维模型。

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-11 DOI: 10.1002/mawe.202400125

Y. F. Teng, C. Zheng, Y. J. Li, T. J. Luo, X. H. Feng, C. Zhu, Y. S. Yang

{"title":"Three-dimensional modeling of electromagnetic field and fluid flow during solidification of an aluminum alloy in a pulsed magnetic field\u0000 Dreidimensionale Modellierung des elektromagnetischen Feldes und der Schmelzeströmung während der Erstarrung einer Aluminium-Legierung in einem gepulsten Magnetfeld","authors":"Y. F. Teng, C. Zheng, Y. J. Li, T. J. Luo, X. H. Feng, C. Zhu, Y. S. Yang","doi":"10.1002/mawe.202400125","DOIUrl":"https://doi.org/10.1002/mawe.202400125","url":null,"abstract":"Three-dimensional finite element models were built to describe the distribution of electromagnetic fields and fluid fields under a low frequency low voltage time-dependent pulsed magnetic field. The simulation results showed that eddy current circling around the axis of the melt can be induced by pulsed magnetic field. Periodic positive-negative Lorentz force in the melt was induced from the interaction between the current and magnetic field. The effects generated by the pulsed magnetic field included vibration, fluid flow and Joule heat. The melt flowed in the form of a multi-circle and the fluid velocity was composed of a base component and a pulse component. The temperature in the melt was homogeneous because of the fluid flow. Melt temperatures were measured and compared with the simulated results during solidification process of aluminum alloy A356 (Al−Si alloy), which qualitatively confirmed the decrease of temperature gradient. Moreover, the effects of material resistivity and electromagnetic parameters of the pulsed magnetic field were investigated. Materials with smaller resistivity took larger electromagnetic force. The fluid flowed much faster under larger excitation current density and frequency. Finally, the grain refinement mechanisms under the pulsed magnetic field were analyzed.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 12","pages":"1732-1742"},"PeriodicalIF":1.2,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860987","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

Materialwiss. Werkstofftech. 12/2024 Materialwiss .Werkstofftech . 12/2024

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-11 DOI: 10.1002/mawe.202481211

引用次数: 0

Effect of hollow beads content in aluminum oxide hollow beads reinforced epoxy composites on mechanical and energy absorption properties of the composites Auswirkungen des Gehalts an Hohlkugeln in mit Aluminiumoxid-Hohlkugeln verstärkten Epoxid-Verbundwerkstoffen auf die mechanischen und energieabsorbierenden Eigenschaften der Verbundwerkstoffe Effect of谷beads试点在aluminum oxide谷beads reinforced epoxy composites on mechanical and energy absorption properties of the composites工资的影响在与Hohlkugeln Aluminiumoxid-Hohlkugeln加强Verbundwerkstoffe的机械特性和energieabsorbierenden Epoxid-Verbundwerkstoffen。

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-11 DOI: 10.1002/mawe.202400163

Z. Wu, Q. Gao, Q. Wang, Y. Wang, Z. Zhang, Y. Zhang

{"title":"Effect of hollow beads content in aluminum oxide hollow beads reinforced epoxy composites on mechanical and energy absorption properties of the composites\u0000 Auswirkungen des Gehalts an Hohlkugeln in mit Aluminiumoxid-Hohlkugeln verstärkten Epoxid-Verbundwerkstoffen auf die mechanischen und energieabsorbierenden Eigenschaften der Verbundwerkstoffe","authors":"Z. Wu, Q. Gao, Q. Wang, Y. Wang, Z. Zhang, Y. Zhang","doi":"10.1002/mawe.202400163","DOIUrl":"https://doi.org/10.1002/mawe.202400163","url":null,"abstract":"Aluminum oxide hollow microbeads/epoxy resin composite is a kind of epoxy resin-based multi-porous energy-absorbing material. This study improved the brittleness and toughness of epoxy resin. Adding hollow aluminum oxide microbeads with different mass fractions increased the energy absorption capacity. Quasi-static compression tests were carried out at room temperature to test the compression properties of epoxy resin/hollow microbead composites. The composites′ energy absorption properties and energy absorption efficiency were analyzed and calculated using the obtained compression curves. The fracture characteristics and microscopic morphology of the composite specimens were observed by scanning electron microscopy. It was found that aluminum oxide hollow microbeads, as reinforcement material, can effectively improve the brittleness and yield strength of epoxy resin materials and enhance the energy absorption performance and energy absorption efficiency of composite materials. With the increase in the mass fraction of hollow microbeads, the energy absorption performance of the composite material first increases and then decreases. Its performance is the most significant when the mass fraction of aluminum oxide hollow microbeads is 10 %.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"55 12","pages":"1640-1651"},"PeriodicalIF":1.2,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860989","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

Cover Picture: (Materialwiss. Werkstofftech. 12/2024) 封面图片：(Materialwiss。Werkstofftech . 12/2024)

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-12-11 DOI: 10.1002/mawe.202481201

引用次数: 0