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Microstructural Characterization of a 1200 MPa Complex-Phase Steel 1200 兆帕复杂相位钢的微观结构表征
Materials Research Pub Date : 2023-06-02 DOI: 10.1590/1980-5373-MR-2023-0015
R. Lima, J. Spadotto, F. Tolomelli, Maria Isabel Ramos Navarro, A. Clarke, K. Clarke, F. Assunção
{"title":"Microstructural Characterization of a 1200 MPa Complex-Phase Steel","authors":"R. Lima, J. Spadotto, F. Tolomelli, Maria Isabel Ramos Navarro, A. Clarke, K. Clarke, F. Assunção","doi":"10.1590/1980-5373-MR-2023-0015","DOIUrl":"https://doi.org/10.1590/1980-5373-MR-2023-0015","url":null,"abstract":"The demand for new advanced high strength steels (AHSS) has been increasing in the last few decades. A large part of this demand comes from automotive companies. We have produced a new complex-phase (CP) steel with 1200 MPa of mechanical resistance and 8% of elongation, called CP1200. In this paper the dilatometric and microstructural characterization of a newly produced CP1200 steel is presented. The new steel was produced by making changes to the heat treatment of the already industrially available CP1100. The microstructure was quantified using light optical microscopy (LOM) and electron backscatter diffraction (EBSD). The microstructure of both steels was compared to identify the origin of the mechanical properties improvement. A new microstructure distribution, with higher amount of bainite and smaller concentration of ferrite and martensite was identified.","PeriodicalId":18272,"journal":{"name":"Materials Research","volume":"247 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139370989","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
Growth Kinetics of β´Precipitation in a Ferritic Matrix During Isothermal Aging of Cu-containing Fe-10at.%Ni-15at.%Al alloys 含cu Fe-10at.%Ni-15at等温时效过程中铁素体基体中β′析出的生长动力学% Al合金
Materials Research Pub Date : 2021-09-15 DOI: 10.1590/1980-5373-mr-2021-0232
Hector J. Dorantes-Rosalesa, C. Ferreira-Palma, Victor M. Lopez-Hirata, Maribel L. Saucedo-Muñoza,, Erika O. Avila-Davila, Felipe ernandez-Santiago, José D. Villegas-Cárdenas, D. Rivas-López
{"title":"Growth Kinetics of β´Precipitation in a Ferritic Matrix During Isothermal Aging of Cu-containing Fe-10at.%Ni-15at.%Al alloys","authors":"Hector J. Dorantes-Rosalesa, C. Ferreira-Palma, Victor M. Lopez-Hirata, Maribel L. Saucedo-Muñoza,, Erika O. Avila-Davila, Felipe ernandez-Santiago, José D. Villegas-Cárdenas, D. Rivas-López","doi":"10.1590/1980-5373-mr-2021-0232","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2021-0232","url":null,"abstract":"Abstract A precipitation study was carried out during the isothermal aging at 850 °C for Fe-10at.%Ni-15at.%Al, Fe-10at.%Ni-15at.%Al-2.5at.%Cu and Fe-10at.%Ni-15at.%Al-5at.%Cu alloys. The experimental, Calphad, and Kinetic/Precipitation calculated results indicated that the Cu-addition to the ternary alloy promoted a higher volume fraction of β´precipitates, which caused a better aging response for the Cu-containing alloys. The coarsening resistance was the highest for the 2.5 at. % Cu-containing alloy, compared to the ternary alloy because of its lower interfacial free energy, 0.009 Jm-2, between the precipitate and the matrix. The Cu alloying element was located mainly in the β´ precipitate according to its expected thermodynamic behavior, and it caused an atomic relation of Ni to Al close to that of NiAl intermetallic compound for the β´phase. A content of 5 at. % Cu in the ternary alloy promoted higher interfacial energy, 0.04 Jm-2, and thus the fastest coarsening process.","PeriodicalId":18272,"journal":{"name":"Materials Research","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79824407","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
Poly(L-glutamic acid) via catalytical hydrogenation for the fabrication of carbon nanotube nanocomposites 聚l -谷氨酸催化加氢制备碳纳米管纳米复合材料
Materials Research Pub Date : 2021-01-01 DOI: 10.1590/1980-5373-MR-2020-0321
Luan Thanh Nguyen, Hai Le Tran, P. Mai, Vu Ba Duong, Le-Thu T. Nguyen, H. T. Nguyen
{"title":"Poly(L-glutamic acid) via catalytical hydrogenation for the fabrication of carbon nanotube nanocomposites","authors":"Luan Thanh Nguyen, Hai Le Tran, P. Mai, Vu Ba Duong, Le-Thu T. Nguyen, H. T. Nguyen","doi":"10.1590/1980-5373-MR-2020-0321","DOIUrl":"https://doi.org/10.1590/1980-5373-MR-2020-0321","url":null,"abstract":"","PeriodicalId":18272,"journal":{"name":"Materials Research","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73127776","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
Microstructure Features and Mechanical Properties of Double-Sided Friction Stir Welded Joints of AA2050-T84 Thick Plates AA2050-T84厚板双面搅拌摩擦焊接接头的组织特征及力学性能
Materials Research Pub Date : 2020-01-01 DOI: 10.1590/1980-5373-MR-2020-0309
F. Santini, A. Plaine, C. Afonso, Luciano Bergmann, N. Alcântara, J.M.F. dos Santos, M. Miyazaki
{"title":"Microstructure Features and Mechanical Properties of Double-Sided Friction Stir Welded Joints of AA2050-T84 Thick Plates","authors":"F. Santini, A. Plaine, C. Afonso, Luciano Bergmann, N. Alcântara, J.M.F. dos Santos, M. Miyazaki","doi":"10.1590/1980-5373-MR-2020-0309","DOIUrl":"https://doi.org/10.1590/1980-5373-MR-2020-0309","url":null,"abstract":"aUniversidade Federal de São Carlos, Departamento de Engenharia de Materiais, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Rod. Washington Luiz, km 235, 13565-905, São Carlos, SP, Brasil bUniversidade do Estado de Santa Catarina, Departamento de Engenharia Mecânica,Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Rua Paulo Malschitzki, 89219-710, Joinville, SC, Brasil cHelmholtz-Zentrum Geesthacht, Institute of Materials Research, Materials Mechanics, Solid State Joining Processes, Max-Planck-Str. 1, 21502, Geesthacht, Germany dEmbraer S.A., Rod. Presidente Dutra, km 134, 12247-004, São José dos Campos, SP, Brasil","PeriodicalId":18272,"journal":{"name":"Materials Research","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84468428","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: 3
Additive Manufactured Nanocomposites for Bone Tissue Engineering Applications: an Overview 添加剂制造的纳米复合材料在骨组织工程中的应用综述
Materials Research Pub Date : 2020-01-01 DOI: 10.1590/1980-5373-mr-2019-0487
L. Piaia, G. Salmoria, D. Hotza
{"title":"Additive Manufactured Nanocomposites for Bone Tissue Engineering Applications: an Overview","authors":"L. Piaia, G. Salmoria, D. Hotza","doi":"10.1590/1980-5373-mr-2019-0487","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2019-0487","url":null,"abstract":"Tissue Engineering aims to repair, regenerate or restore damaged tissues. Structures known as scaffolds can be manufactured in different ways and with various materials such as synthetic and natural polymers as well as inorganic materials. Additive Manufacturing (AM) has been used to produce porous scaffolds. Particularly, Selective Laser Sintering (SLS) produces materials and composites through a selective solidification of a variety of fine powders. AM-made biomaterials may be suitable for different affected or injured parts by stimulating the biological system around the implant. The present work aims to review relevant concepts concerning the nanostructure for regeneration of the bone tissue when in contact with the native tissue, as well as the suitable techniques and materials to fabricate it","PeriodicalId":18272,"journal":{"name":"Materials Research","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86957479","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: 6
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