Coloquio del Instituto de Física

El Coloquio del Instituto de Física se lleva acabo unicamente en vivo en nuestro canal de YouTube

Liga YouTube

https://www.youtube.com/channel/UCijcZAcDo1Ih5u9e8kiFP3g

Contacto e información: Ing. Cristina Cázares Grageda 

 


 Programación del Semestre Agosto - Diciembre 2022

 

Fecha Ponente Procedencia Tema
1 de febrero      
8 de febrero      
15 de febrero      
22 de febrero

Dr. Luis Orozco

Universidad de Maryland

Enfriamiento por luz de nanofibras ópticas.
1 de marzo Roberto de J. León Montiel  Universidad Nacional Autónoma de México 

Imagenología cuántica de alta resolución asistida por inteligencia artificial.

8 de marzo      
15 de marzo      
22 de marzo Jan Dhont 

Forschungszentrum Jülich GmbH & Lund University 

Electric-field induced phase transitions of highly charged rod-likecolloids.
29 de marzo      
19 de abril

David Wong Campos 

Harvard University 

Imagenología y optogenética de voltaje revela mecanismos de computación neuronal _in vivo_

26 de abril

Baron Chanda

Washington University School of Medicine 

Probing Allostery in ion channels at single molecule resolution.

3 de mayo Jonathan K. Whitmer  University of Notre Dame  Modeling Ionic Liquid Crystals for Ion Transport.
17 de mayo      
24 de mayo Luis Fernando Elizondo Aguilera  Instituto de física / BUAP  Comportamiento estructural y dinámico de un sistema granular vibrado conformado por partículas cúbicas. 
31 de mayo      
7 de junio Jorge Arreola 

Instituto de Física / UASLP 

La breve estancia activa de un ion dentro del poro de un canal iónico. 

 

Ponente: Sergio Eliseo Hernández-Martínez 


Procedencia; Facultad de Metalurgia UASLP

Resumen:

The main aim of the present research is to study the potential of the severe plastic deformation process to consolidate aluminum powders of various composites. Two AA 7075 – ZrO2 (with compositions of 2 and 5 wt.%) and AA 7075 – C (2 wt.%) powder composites were previously milled by 15 h, in a horizontal attritor simoloyer ball mill, in order to disperse the reinforcement particles. Then, the powders were placed inside tubes made of AA 6061 and a load of 6 ton-force was applied in order to compact the powders. The compacted tubes were processed by Equal Channel Angular Pressing (ECAP) at room temperature and at 200 °C, using a die with an inner angle of 90° to obtain a total strain close to 1. The resultant mechanical properties of the consolidated composites are one of the main advantages found in this research, since the Vickers hardness values of the composites are higher than the unreinforced alloy counterpart. The load-displacement curves of each composite were unique in its shape and load requirement for ECAP processing, since the reinforcement affected each material in a particular way. The distribution of the reinforcement particles was enhanced, since the clusters spotted in the composite with 5 wt.% of ZrO2 were no longer visible after ECAP processing. The use of temperature during ECAP process improves the microstructure and the stability of the composites. On the other hand the remaining porosity of the composites processed at 200 °C was lower than the composites processed at room temperature. 

Miercoles 13 hr
Auditorio del IF