{"title":"Elastic properties and electronic structure of the Ni3Sb (cF16) intermetallic","authors":"C. DeLuque, S. B. Ramos, Armando J. Fernández","doi":"10.1557/OPL.2016.62","DOIUrl":"https://doi.org/10.1557/OPL.2016.62","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"299 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77508619","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}
R. V. Graziano, Andromeda A.L. Monroy Brera, R. Campos, Alfredo Maciel Cerda
{"title":"Soluble poly(glycerol sebacate) and poly(ε-caprolactone) 3D scaffolds for blood vessel constructs","authors":"R. V. Graziano, Andromeda A.L. Monroy Brera, R. Campos, Alfredo Maciel Cerda","doi":"10.1557/OPL.2016.69","DOIUrl":"https://doi.org/10.1557/OPL.2016.69","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77585275","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}
J. L. Hidalgo, M. C. Grijalva, J. Matutes, Carlos W. Orquiz, Fernando L. De Araujo, Francisco A. Olímpio
{"title":"Enhanced remanence in nanocomposite of Y 1-x Sm x Co 5 /Co ribbons obtained by melt-spinning","authors":"J. L. Hidalgo, M. C. Grijalva, J. Matutes, Carlos W. Orquiz, Fernando L. De Araujo, Francisco A. Olímpio","doi":"10.1557/OPL.2016.64","DOIUrl":"https://doi.org/10.1557/OPL.2016.64","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80444200","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}
L. F. R. Acosta, O. Zapata, I. Álvarez, R. Cerda, L. L. Lezama
{"title":"Simulation of Heating Cycles for Large Steel Ingots","authors":"L. F. R. Acosta, O. Zapata, I. Álvarez, R. Cerda, L. L. Lezama","doi":"10.1557/OPL.2016.13","DOIUrl":"https://doi.org/10.1557/OPL.2016.13","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"14 1","pages":"23-28"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88619062","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}
L. Zúñiga, F. A. P. González, O. Zapata, N. G. D. Oca, S. Haro
The surface quality of a heat treatable Al-Si-Mg alloy by means compression tests at 450°C was evaluated. Samples were obtained from an ingot with unidirectional solidification in order to obtain a microstructural gradient influenced by the cooling and solidification rate. The samples were heat treated by homogenization at 520°C for 4 hours prior to deformation by compression. Inverted optical and scanning electron microscopes were used to assess the surface damage of deformed samples. Analysis of deformed surface indicates a greater influence of microstructural refinement on hardening rate. It was found that the samples solidified at high cooling rates showed no defects, but at low cooling rates produced growth of grain size and intermetallic phases and thereby the high incidence of cracks in the surface.
{"title":"Surface quality evaluation of hot deformed aluminum","authors":"L. Zúñiga, F. A. P. González, O. Zapata, N. G. D. Oca, S. Haro","doi":"10.1557/OPL.2016.63","DOIUrl":"https://doi.org/10.1557/OPL.2016.63","url":null,"abstract":"The surface quality of a heat treatable Al-Si-Mg alloy by means compression tests at 450°C was evaluated. Samples were obtained from an ingot with unidirectional solidification in order to obtain a microstructural gradient influenced by the cooling and solidification rate. The samples were heat treated by homogenization at 520°C for 4 hours prior to deformation by compression. Inverted optical and scanning electron microscopes were used to assess the surface damage of deformed samples. Analysis of deformed surface indicates a greater influence of microstructural refinement on hardening rate. It was found that the samples solidified at high cooling rates showed no defects, but at low cooling rates produced growth of grain size and intermetallic phases and thereby the high incidence of cracks in the surface.","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87345626","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}
A. Loyda, G. M. Hernández-Muñoz, L. Reyes-Osorio, P. Zambrano, F. Montemayor-Ibarra
Nowadays the aeronautical industry keeps strict quality standards in its dimensional specifications, mechanical properties and microstructural characteristics. Therefore, the involved manufacturing processes require keeping high standards. The nickel based superalloys are present in many components of the jet engines, being the Inconel 718 MR superalloy the most common, making up to 50% of the jet engine. This is designed to resist high temperatures, corrosion and creep. The process of rotary forging is a manufacturing process that is currently under scientific and technological development in the aeronautical industry. An Avrami model coupled with a commercial FEM platform (DEFORM TM 3D) was developed to evaluate the average grain size, as a function of the working conditions at 980 °C and 1000 °C. The results provide a better understanding of the influence of temperature in the grain size evolution during the rotary forging process, compared with previous reports.
{"title":"Numerical Simulation of Rotary Forging Inconel 718 Superalloy Applied to Aeronautical Components","authors":"A. Loyda, G. M. Hernández-Muñoz, L. Reyes-Osorio, P. Zambrano, F. Montemayor-Ibarra","doi":"10.1557/OPL.2016.25","DOIUrl":"https://doi.org/10.1557/OPL.2016.25","url":null,"abstract":"Nowadays the aeronautical industry keeps strict quality standards in its dimensional specifications, mechanical properties and microstructural characteristics. Therefore, the involved manufacturing processes require keeping high standards. The nickel based superalloys are present in many components of the jet engines, being the Inconel 718 MR superalloy the most common, making up to 50% of the jet engine. This is designed to resist high temperatures, corrosion and creep. The process of rotary forging is a manufacturing process that is currently under scientific and technological development in the aeronautical industry. An Avrami model coupled with a commercial FEM platform (DEFORM TM 3D) was developed to evaluate the average grain size, as a function of the working conditions at 980 °C and 1000 °C. The results provide a better understanding of the influence of temperature in the grain size evolution during the rotary forging process, compared with previous reports.","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"41 1","pages":"101-107"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75569960","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}
C. López-Badillo, J. López-Cuevas, C. A. Gutiérrez-Chavarría, J. L. Rodríguez-Galicia, E. Muzquiz-Ramos
BaAl 2 Si 2 O 8 and SrAl 2 Si 2 O 8 were synthesized by solid-state reaction of stoichiometric mixtures of either BaCO 3 or SrCO 3 with coal fly ash and Al 2 O 3 . The mixtures were mechanically activated in an attrition mill for up to 12 h and then reaction-sintered at 900-1300 °C, aiming to promote the formation of BaAl 2 Si 2 O 8 and SrAl 2 Si 2 O 8 as well as the conversion from their hexagonal (Hexacelsian) into their monoclinic (Celsian) forms, which is associated with improved mechanical properties in the sintered materials. Especially in the case of SrAl 2 Si 2 O 8 , the formation of Celsian was favored at relatively low sintering temperatures by increasing milling time. Although only the SrAl 2 Si 2 O 8 composition was fully converted into Celsian, the Hexacelsian to Celsian conversions obtained for the mechanically-activated BaAl 2 Si 2 O 8 composition were significantly higher than those previously reported in the literature for this compound. This could be attributed to the use of coal fly ash as raw material, which contains mineralizers that promote the mentioned conversion.
{"title":"Effect of Mechanical Activation on the Synthesis of Ba-Celsian and Sr-Celsian using Precursor Mixtures Containing Coal Fly Ash","authors":"C. López-Badillo, J. López-Cuevas, C. A. Gutiérrez-Chavarría, J. L. Rodríguez-Galicia, E. Muzquiz-Ramos","doi":"10.1557/OPL.2016.23","DOIUrl":"https://doi.org/10.1557/OPL.2016.23","url":null,"abstract":"BaAl 2 Si 2 O 8 and SrAl 2 Si 2 O 8 were synthesized by solid-state reaction of stoichiometric mixtures of either BaCO 3 or SrCO 3 with coal fly ash and Al 2 O 3 . The mixtures were mechanically activated in an attrition mill for up to 12 h and then reaction-sintered at 900-1300 °C, aiming to promote the formation of BaAl 2 Si 2 O 8 and SrAl 2 Si 2 O 8 as well as the conversion from their hexagonal (Hexacelsian) into their monoclinic (Celsian) forms, which is associated with improved mechanical properties in the sintered materials. Especially in the case of SrAl 2 Si 2 O 8 , the formation of Celsian was favored at relatively low sintering temperatures by increasing milling time. Although only the SrAl 2 Si 2 O 8 composition was fully converted into Celsian, the Hexacelsian to Celsian conversions obtained for the mechanically-activated BaAl 2 Si 2 O 8 composition were significantly higher than those previously reported in the literature for this compound. This could be attributed to the use of coal fly ash as raw material, which contains mineralizers that promote the mentioned conversion.","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"61 1","pages":"89-94"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86638205","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}
C. E. Velasquez, Graiciany Barros, M. A. Veloso, A. L. Costa, C. Pereira
{"title":"Effects on Criticality and Burnup Calculations Changings ADS Cladding Material","authors":"C. E. Velasquez, Graiciany Barros, M. A. Veloso, A. L. Costa, C. Pereira","doi":"10.1557/OPL.2016.30","DOIUrl":"https://doi.org/10.1557/OPL.2016.30","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74528070","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}
G. Montero, B. Valdez, Marcos A. Coronado, M. Schorr, A. Eliezer, Conrado García
{"title":"The Corrosion Performance Of Metals In An Experimental Biodiesel Vehicle Motor","authors":"G. Montero, B. Valdez, Marcos A. Coronado, M. Schorr, A. Eliezer, Conrado García","doi":"10.1557/OPL.2016.97","DOIUrl":"https://doi.org/10.1557/OPL.2016.97","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77604854","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}
M. R. Belmonte, A. Sánchez, A. F. Jiménez, A. T. Acosta, M. M. Madrid, J. T. P. Quiroz
{"title":"Use of Fly Ash and Cu-Slag from Mexico to Make Alkali Cements and Hybrid Cements","authors":"M. R. Belmonte, A. Sánchez, A. F. Jiménez, A. T. Acosta, M. M. Madrid, J. T. P. Quiroz","doi":"10.1557/OPL.2016.8","DOIUrl":"https://doi.org/10.1557/OPL.2016.8","url":null,"abstract":"","PeriodicalId":18884,"journal":{"name":"MRS Proceedings","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76226548","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}
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