METAL 2020 Conference Proeedings最新文献_第9页

DEVELOPMENT OF CHROMATE-FREE PASSIVATION PROCESSES FOR MAGNESIUM ALLOY AZ31B az31b镁合金无铬钝化工艺的发展

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3550

M. Šimonová, A. Abrashov, N. Grigoryan, T. Vagramyan, V. Men'shikov

引用次数: 0

INVESTIGATION OF THE PROCESS WINDOW FOR DEFORMATION INDUCED FERRITE TO IMPROVE THE JOINABILITY OF PRESS-HARDENED COMPONENTS 形变诱导铁素体提高冲压硬化件焊接性能的工艺窗口研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3523

B. Behrens, K. Brunotte, H. Wester, E. Stockburger

{"title":"INVESTIGATION OF THE PROCESS WINDOW FOR DEFORMATION INDUCED FERRITE TO IMPROVE THE JOINABILITY OF PRESS-HARDENED COMPONENTS","authors":"B. Behrens, K. Brunotte, H. Wester, E. Stockburger","doi":"10.37904/metal.2020.3523","DOIUrl":"https://doi.org/10.37904/metal.2020.3523","url":null,"abstract":"Due to their high tensile strengths increasing the crashworthiness of the vehicles, ultra-high strength steels are increasingly used in the automotive industry, for example in components like B-pillars or tunnel. 22MnB5 is a premier candidate for this cause, since it can be press-hardened and phase-transformed into the martensitic phase, resulting in high hardness and tensile strength. However, complications can arise in the assembly of press-hardened components since conventional mechanical joining processes have their limitations due to high forces required for joining press-hardened steels, especially in multi-sheet layers. Therefore, this study focuses on the determination of an optimum process window to influence the 22MnB5 microstructure thermo-mechanically during press hardening, causing a local softening. This so-called deformation-induced ferrite improves ductility at the desired locations to ease the mechanical joining operation in the assembly. Investigations are performed on a forming dilatometer varying the cooling rate, the introduced amount of plastic strain and the forming temperature along with metallographic as well as microhardness measurements. Based on the laboratory tests, a process window of the deformation induced ferrite is derived for an application in a forming press.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"449 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76058006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

THE TECHNOLOGY FOR THE REDUCTION OF METAL OXIDES USING WASTE POLYETHYLENE MATERIALS 利用废旧聚乙烯材料减少金属氧化物的技术

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3592

Sh. T. Khojiev, S. Matkarimov, Etibor Tukhtaboy kizi Narkulova, Z. Matkarimov, Nasiba Yuldasheva

{"title":"THE TECHNOLOGY FOR THE REDUCTION OF METAL OXIDES USING WASTE POLYETHYLENE MATERIALS","authors":"Sh. T. Khojiev, S. Matkarimov, Etibor Tukhtaboy kizi Narkulova, Z. Matkarimov, Nasiba Yuldasheva","doi":"10.37904/metal.2020.3592","DOIUrl":"https://doi.org/10.37904/metal.2020.3592","url":null,"abstract":"The study relates to the processing of zinc-containing wastes of metallurgical production using products of joint pyrolysis of polyethylene wastes and wood pods. The process is carried out in two stages: preparation of polyethylene waste for the operation and then the recovery process. Zinc-containing wastes are thickened, dehydrated to a moisture content of not more than 10 - 13%, mixed with a reducing agent. Dehydrated Zinc-containing wastes (cake or sludge) are mixed with synthetic reducing agents in a mass ratio cake - artificial reducing agent from 8.8: 2.2 to 8.2: 2.8, respectively, and pelletized. They carry out reductive heat treatment of pelletized waste in the presence of a reliable carbon-containing reducing agent in the amount of 20-40% by weight of the processed waste and the resulting products of the combined pyrolysis of polyethylene waste and wood pods with counter current air blasting in a rotary kiln, distillation of zinc and trapping of sublimates to produce zinc oxides. Moreover, before igniting a reliable, reducing agent and pyrolysis products of polyethylene wastes (synthetic reducing agent), gaseous fuel is burned in the working volume of the furnace. This study will increase the intensity of the processes of sublimation of zinc and reduction of iron, increase the degree of utilization of polymer waste.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77046965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

STUDYING THE SELF-ORGANIZATION OF MACROMOLECULES ON THE SURFACE OF TEXTURED POLYMER COATING OF METAL SHEET 研究了金属薄板结构聚合物涂层表面大分子的自组织

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3566

O. Maksimova, V. Smirnov, S. Osipov, E. Menshikov, A. Maksimov, V. I. Egorov, A. Trifanova, Aleksander Baidzhanov, N. Osipova

引用次数: 0

Advantages and limitations of using the QFD method in the production of copper PRODUCTS – CASE study 在铜产品生产中使用QFD方法的优点和局限性-案例研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3655

M. Jagusiak-Kocik

引用次数: 0

Microstructure and mechanical properties of TiAl-based alloy produced by selective laser melting 选择性激光熔化制备tial基合金的显微组织和力学性能

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3604

I. Polozov, Artem Kantyukov, V. Popovich, Jia-Ning Zhu, A. Popovich

{"title":"Microstructure and mechanical properties of TiAl-based alloy produced by selective laser melting","authors":"I. Polozov, Artem Kantyukov, V. Popovich, Jia-Ning Zhu, A. Popovich","doi":"10.37904/metal.2020.3604","DOIUrl":"https://doi.org/10.37904/metal.2020.3604","url":null,"abstract":"Additive Manufacturing (AM) is an attractive way of producing parts of intermetallic titanium alloys. However, high brittleness of these alloys makes it challenging to produce crack-free intermetallic parts by AM. One way to overcome this problem is to use high-temperature powder-bed preheating. In this paper, Ti-48Al-2Cr-2Nb alloy was obtained by selective laser melting process with high-temperature preheating of 800-900 ºC. Crack-free specimens with a relative density of 99.9% were fabricated using an optimized process parameter set. Microstructure and phase composition were studied using scanning electron microscopy and X-Ray diffraction to reveal a fine microstructure consisting of lamellar α2/γ colonies, equiaxed γ grains, and retained β phase. Compressive tests and microhardness measurements showed that the produced alloy exhibited superior properties compared to the conventionally obtained TiAl-alloy. reports the results of the investigation of L-PBF process using Ti-48Al-2Cr-2Nb alloy powder with an inductive high-temperature platform preheating. The effects of L-PBF process parameters and preheating temperature on fabricated TiAl-alloy microstructure and mechanical properties are investigated.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89655736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Structure and magnetic properties IN the mixture of Fe and BN powders after high-energy ball milling and annealing 高能球磨和退火后Fe和BN混合粉末的结构和磁性能

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3585

V. Menushenkov, I. Minkova, A. Savchenko, I. Shchetinin, D. Zhukov, Sandra Mecala

引用次数: 0

Proposal for Integrating an EDI Cloud Solution into the Information System Structure at a Metallurgical Enterprise 某冶金企业EDI云解决方案与信息系统结构集成的建议

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3658

Martin Lampa, Pavla Konfrštová, Andrea Samolejová

{"title":"Proposal for Integrating an EDI Cloud Solution into the Information System Structure at a Metallurgical Enterprise","authors":"Martin Lampa, Pavla Konfrštová, Andrea Samolejová","doi":"10.37904/metal.2020.3658","DOIUrl":"https://doi.org/10.37904/metal.2020.3658","url":null,"abstract":"Electronic information transfer has existed for decades, and the many advantages of this type of communication are employed by large companies where quick, flawless and secure data transfer is essential. Many companies use advanced information systems internally, hence most of their documents are created in electronic format. It could therefore be said that for companies to exchange documents in hardcopy or via e-mail and manually file these documents is an anachronism. If a company decides to take advantage of more modern data transfer technology, this is often more a necessity rather than a competitive advantage if the enterprise wants to remain relevant to key customers or suppliers. The aim of the article was to identify the suppliers and customers who would be ideal to implement joint EDI communications with, predict the efficiency and speed of purchasing and sales processes, recommend the broader use of EDI communication integration, evaluate the advantages and disadvantages of implementing EDI, and subsequently propose a suitable EDI cloud solution to integrate with the information system at a metallurgical enterprise.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"182 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77358135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser remelting of Ni-Cr-Re plasma spraying coating Ni-Cr-Re等离子喷涂涂层的激光重熔

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3562

M. Węglowski, J. Dworak, S. Dymek, I. Kalemba-Rec, A. Wrona, K. Kustra, M. Lis

{"title":"Laser remelting of Ni-Cr-Re plasma spraying coating","authors":"M. Węglowski, J. Dworak, S. Dymek, I. Kalemba-Rec, A. Wrona, K. Kustra, M. Lis","doi":"10.37904/metal.2020.3562","DOIUrl":"https://doi.org/10.37904/metal.2020.3562","url":null,"abstract":"The plasma spray technology allows spraying a wide variety of materials. Atmospheric plasma spraying (APS) consists in injecting a powder feedstock material in a plasma jet to melt and accelerate the injected particles and spray them onto a substrate. The coating growth is thus realized by the impingement and spreading of sprayed particles. This mechanism of coating formation induces the presence of pores and micro-cracks. In order to eliminate those drawbacks, laser remleting may be used to improve the properties and performances of plasma sprayed coatings. In the present paper, the Ni20%C + 20%Re coating fabricated by plasma spraying on stainless steel substrate were remelted by CO 2 laser, and the effect of laser remelting on microstructure and hardness of plasma sprayed Ni20%Cr + 20%Re coating were studied. The microstructure of plasma sprayed and laser remelted coatings were analyzed using scanning election microscopy (SEM) and energy disperse spectroscopy (EDS). The micro-hardness of coating was measured using micro-hardness tester. The results show that the laser remelted coating becomes much denser moreover, the chemical composition of the coatings becomes homogeneous","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75849340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SMALL PUNCH TESTING OF THICK WALLED PIPE MADE OF THE STEEL P92 WITH HETEROGENEOUS MICROSTRUCTURE 非均匀组织p92钢厚壁管的小冲孔试验

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3512

Z. Kuboň

引用次数: 0