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au:HERNANDEZ, MARIA INES
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1.
Failure of Stainless Steel Welds Due to Microstructural Damage Prevented by In Situ Metallography
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Lopez, Juan Manuel Salgado
; Alvarado, María Inés
; Hernandez, Hector Vergara
; Quiroz, José Trinidad Perez
; Olmos, Luis
.
Resumo Em aços inoxidáveis o dano microestrutural é causado pela precipitação de carbonetos de cromo ou de fase sigma. Estes microcomponentes são prejudiciais em soldas de aço inoxidável, porque eles levam a corrosão intergranular. No entanto, eles são propensos a aparecer na microestrutura da zona afetada pelo calor de soldas em aço inoxidável. Isto é particularmente importante para reparos de componentes industriais feitos de aço inoxidável austenítico. Réplica metalográfica pode ser aplicada para identificar a necessidade de reparos em componentes de aço AISI304 inoxidável onde é difícil assegurar que tal fase está presente na microestrutura da ZTA. A necessidade de inspeção microestrutural não destrutiva no aço inoxidável AISI 304 está associada a impossibilidade de se obter corpos de prova para análise via técnicas convencionais. Neste trabalho, propõe-se a aplicação de réplica metalográfica, a fim de identificar danos microestruturais em soldas de aço inoxidável AISI 304. Os resultados deste estudo mostraram que as micrografias da superfície externa do conjunto de peças soldadas representam a microestrutura da ZTA do componente de aço inoxidável porque mostram a presença de carbonetos metálicos precipitados nos contornos de grão ou de fase sigma.
Abstract In stainless steels, microstructural damage is caused by precipitation of chromium carbides or sigma phase. These microconstituents are detrimental in stainless steel welds because they lead to weld decay. Nevertheless, they are prone to appear in the heat affected zone (HAZ) microstructure of stainless steel welds. This is particularly important for repairs of industrial components made of austenitic stainless steel. Non-destructive metallography can be applied in welding repairs of AISI 304 stainless steel components where it is difficult to ensure that no detrimental phase is present in the HAZ microstructure. The need of microstructural inspection in repairs of AISI 304 is caused because it is not possible to manufacture coupons for destructive metallography, with which the microstructure can be analyzed. In this work, it is proposed to apply in situ metallography as non-destructive testing in order to identify microstructural damage in the microstructure of AISI 304 stainless steel welds. The results of this study showed that the external surface micrographs of the weldment are representative of HAZ microstructure of the stainless steel component; because they show the presence of precipitated metallic carbides in the grain boundaries or sigma phase in the microstructure of the HAZ.
https://doi.org/10.1590/0104-9224/SI2102.03
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2.
Trabajos de investigación presentados en el XLIX Congreso Mexicano de Anestesiología: Zacatecas 2015. México
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Sánchez, Claudia
; Osorio-Santiago, María Arelí
; Medina-Tarango, Marco Antonio
; Fernandez De Lara, Alfredo
; Castro-Salinas, Jose Ernesto
; Salazar-Luna, Miguel Angel
; Sanchez, Placido
; Castro-Cayetano, José Esteban
; Millán Hernández, Manuel
; Almonte, Hector Asencion
; Zamora-Aguirre, Salvador A.
; Gudiño, Yocelin Montserrat
; Reyes-Valle, Roberto
; Zepeda-Olivera, Silvia
; Ferretiz-López, Giancarlo
; Salgado, Mónica
; Moctezuma-Ramírez, Luis
; Hernández-Ortiz, Israel Ivan
; Hernández-Zenteno, Norma Angelica
; Martinez, Raquel
; Sánchez-Hernández, Eloy
; Camacho-Gómez, Aldo Constantino
; Martinez, Raquel
; Chenge-Said, Jarumi
; Flores Fonseca, Elvia
; López-Centeno, Martha Alicia
; López, Angélica Yanine
; Jiménez-Ramos, Adriana
; Velasco-Sordo, Luis Ramón
; Hurtado-Reyes, Ignacio Carlos
; Castellanos, Antonio
; Rojas-Peñaloza, Janeth
; Zapién-Madrigal, Jesús Miguel
; Sánchez, Placido
; Sánchez-López, Eric Mauricio
; Mendoza- García, María Isabel
; Calzada-Grijalba, José Francisco
; Hernandez, Israel Ivan
; Castellanos De León, Edgar
; Luna Medina, Cinthya Isabel
; Alvarez-Mora, Lucy Andrea
; López, Angélica Yanine
; Jiménez-Ramos, Adriana
; Velasco-Sordo, Luis Ramón
; Hurtado-Reyes, Ignacio Carlos
; Diaz, Erica Raquel
; Hernandez-Gutierrez, Deoselina
; Gargiulo, Paul Raphael
; Barragán, Maria Jimena
; Ham Mancilla, Ofelia
; Zamora- Gutiérrez, Ana Lilia
; Arteaga, Jaime
; Hernández-Gutierrez, Deoselina
; Ríos-Navarro, Ramón Alejandro
; Romo-Serrano, Erika
; Castellanos, Antonio
; Zapién-Madrigal, Jesús Miguel
; Rojas- Peñaloza, Janeth
; Garduño, Araceli Marselle
; Flores-Rodriguez, Alfonso de Jesus
; Cuervo-Ggonzalez, Alma Kenia
; Puente-Solorio, Armando
; Benitez-Rebollar, Joel Enrique
; Gaona-Valle, Laura Soraya
; Jaime, Mayra Alicia
; Ortega-Suarez, Lizbeth
; Barrientos-Quintanilla, Luis Alberto
; Alvarado-Ramos, Salomon
; Moya-Morales, Yuliana
; Ferretiz, Giancarlo
; César, Julio
; Yañez, Pablo
; Reyes-Valle, Roberto
; Colores-Velazquez, Julio César
; Luna, Arístides De Jesús
; Almonte, Hector Asencion
; Márquez-Noyola, Elizabeth Alicia
; Castellanos, Antonio
; Barrera, Lorena
; Cabrera-Sánchez, Miroslava
; Fernanández-Muñoz, Angel Fernando
; Rolón-Sánchez, Yumara Georgina
; Barragán-Hernández, Adriana Guadalupe
; Lòpez, Estefania
; Osorio-Santiago, Maria Areli
; Muñoz, Beatriz Adelaida
; Cruz-Bautista, Mayra Ivette De La
; Ripoll-Aburto, Carlos Andres
; Ortiz-Maldonado, Jessie Karolina
; Hernández-Rasgado, Javier
; Cuj-Díaz, Alberto
; Sanchez, Placido
; Sarmiento, Lina
; Peña-Olvera, Silvia
; Santiago-Poot, Nohemí
; López, Angélica Yanine
; Jiménez-Ramos, Adriana
; Hurtado-Reyes, Ignacio Carlos
; Ferretiz, Giancarlo
; Pablo-Yañez, Julio César
; Flores-Martinez, Juan Ramón
; Chavez-Contreras, Sara Idali
; Gudiño-Larios, Yocelin Montserrat
; Velazquez, Sara
; Vences-Perez, Noemi Dolores
; Ayala-Bermudez, Celina Alejandra
; Garcia-Castro, Marco Tulio
; Gordillo-Parra, Alejandra
; Barrera, Lorena
; Cabrera-Sánchez, Miroslava
; Martínez-García, Claudia Lizeth
; Zuñiga-Iñiguez, Paloma
; Anaya-Romo, Eduardo
; Antelo-Corral, Jaqueline
; Ramos, Perla Del Carmen
; Hernández-Rasgado, Javier
; Cuj-Díaz, Alberto
; Fonz-Murillo, Elma Patricia
; Cruz-Bautista, Mayra Ivette De la
; Ripoll-Aburto, Carlos Andres
; Cruz, Mayra Ivette De La
; Cuj-Díaz, Alberto
; Hernández-Rasgado, Javier
; Vega-Cano, Miguel
; Ramos-Rodríguez, Perla del Carmen
; Muñoz-Hernández, Beatriz Adelaida
; Caceres, Leonardo Andres
; Arteaga-Favela, Claudia Berenice
; Nava-Osorio, Alejandro
; Arce-Bojorquez, Brisceyda
; Urias, Emma
; Rosario-Ayala, Yuridia Del
; Salazar-Castro, Laura Elena
; Nieblas-Torres, Mariela Lizet
; Arce-Bojorquez, Brisceyda
; Prince-Angulo, Silvia Annel
; Espinoza-Quintero, Erendira
; Alzate, Ana Lizette
; Camacho, Jesus Erick
; Aviles-Lozoya, Jose Trinidad
; Urias, Emma
; Espinoza-Quintero, Erendira
; Castellanos, Antonio
; Cruz, Nora Cecilia
; Rendón-Salazar, Dafne Denisse
; González-Cordero, Gustavo
; Garduño-Chávez, Belia Inés
; Orozco, Arturo Emmanuel
; Guerrero-Morales, Fernando
; Gonzalez-Ortiz, Julio Cesar
; Casillas-Cruz, Angel Alberto
; Aquino-Tamayo, Blanca Olga
; Estrada, Haydeé Lucía
; Soberanes-Alderete, Francisco Javier
; Ojeda-Ramos, Joel
; Martinez-Flores, Carlos
; Sandoval-Rivera, Arturo Guadalupe
; Cáceres-Figeroa, Leonardo Andres
; Ortega, Columba
; Torres-Mata, Lizbeth Yareli
; Peña-Olvera, Silvia
; Huerta, Juana Geraldine
; Sarmiento-Kamar, Rodrigo Ignacio
; Espinoza, Erendira
; Gerardo-Angulo, Alma Ruth
; Nieblas-Torres, Mariela Lizet
; Martinez-Felix, Jesus Israel
; Rochin-Parra, Julia Teresa
; Chavez, Veronica
; Buendía-Roque, Daniel
; Pinales-Aguilar, Guillermina
; Sandoval, Linda Alejandra
; Ovalle-Bueno, Claudia
; Armendáriz-Salinas, Jaime
; Valdovinos, Salvador
; Castellanos, Antonio
; Sandoval, Linda Alejandra
; Medina-Piqué, Sheila
; Aguilar, Hugo
; Barrera, Eduardo
; Márquez, Elizabeth Alicia
; León, Héctor Almonte De
; Castellanos, Antonio
; Rojas-Peñaloza, Janeth
; Zapién-Madrigal, Jesús Miguel
; Paez, Nancy
; Borquez-Torres, Samantha Anabel
; Chinchillas-Chinchillas, Yanira Zelene
; Silva-Romo, Luis Julian
; Aldana, Jorge Pablo
; Hernández-Gutiérrez, Deoselina
; Sánchez-Hernández, Eloy
; Castellanos, Antonio
; Coronel, Berta
; Fuentes-González, Nalleli del Carmen
; Mendoza-García, María Isabel
; Yañez, Gonzalo
; Contreras-Salomón, José Luis
; Garcia-Simbron, Emma
; Chable-Juárez, Randy Josue
; Manriquez-Merino, Ricardo
; Martinez, Raquel
; Chenge-Said, Jarumi
; Hernández Gutiérrez, Deoselina
; Sánchez, Placido
; Arrieta-Ruiz, Marelyn
; González-Velázquez, Felipe
; Estrada-Utrera, Sandra
; Castellanos, Antonio
; Meza, Oscar Eduardo
; Jimenez-Gonzalez, Adriana Guadalupe
; Pilar-Velazquez, Estefania
; Romo-Cortes, Ramona
; Torres-Soto, Maria de la Luz
; Estrada, Maria Sandra
; Espinoza, Cinthia Yadira
; Islas-Ruz, Felix Gilberto
; Perez-Diaz, Roberto
; Manuel-Serna, Roberto Aurelio
; Arce-Bojorquez, Brisceyda
; Medina-Lopez, Francisco de Jesus
; Nieblas-Torres, Mariela Lizet
; Espinoza-Quintero, Erendira
; Ayala-Camargo, Yuridia
; Guadarrama, Hugo
; Flores-Rodriguez, Alfonso de Jesus
; Benitez-Rebollar, Joel Enrique
; Cedillo-Hernandez, Carolina
; Acevedo-Corona, Arturo
; Gaona-Valle, Laura Soraya
; Morfin, Cecilia
; Flores Rodriguez, Alfonso de Jesus
; Cortes-Aceves, Hector Omar
; Rodríguez-Martínez, José Carlos
; Puente Solorio, Armando
; Gaona-Valle, Laura Soraya
; Reyes, Agustin
; Uscanga-Villa, Maria Nieves
; Molina-Rodriguez, Gloria
; Aquino-Tamayo, Blanca Olga
; Cabrera, Francisco
; Motta-Amezquita, Luis Gerardo
; Castellanos-Olivares, Antonio
; Joffre-Mora, Oscar Paul
; Moncada, Adriana Patricia
; Hernandez-Baez, Humberto Trinidad
; Cecilia, Nora
; Garduño-Chávez, Belia Inés
; González-Cordero, Gustavo
; Palacios-Ríos, Dionicio
.
5425 downloads
3.
Ingesta oral do paciente hospitalizado com disfagia orofaríngea neurogênica
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OBJETIVO: verificar a evolução na ingesta oral e a ocorrência de broncopneumonias (BCP) em pacientes hospitalizados com disfagia orofaríngea neurogênica, após atuação fonoaudiológica. MÉTODOS: 50 pacientes adultos, divididos em grupos: I: 31 pacientes pós-acidente vascular encefálico; II: sete pacientes pós-traumatismo crânio-encefálico; III: 12 pacientes com demência. Foram levantadas as informações antes e após a atuação fonoaudiológica: nível da Functional Oral Intake Scale (FOIS), ocorrência de BCP; número de atendimentos fonoaudiológicos e motivo de interrupção destes. RESULTADOS: houve aumento significativo dos níveis da escala FOIS e redução do percentual de ocorrência de BCP nos três grupos estudados. Nos grupos pós-AVE e demência a interrupção da fonoterapia ocorreu devido à alta hospitalar, enquanto que no grupo pós-TCE devido à alta fonoaudiológica. CONCLUSÃO: os pacientes deste estudo demonstraram avançar das consistências alimentares na ingesta oral, e redução da ocorrência de BCP, após a intervenção fonoaudiológica com relação à disfagia.
PURPOSE: to investigate the development in oral intake and the incidence of bronchopneumonia (BCP) in hospitalized patients with neurogenic oropharyngeal dysphagia, after speech and language therapy intervention. METHODS: 50 adult patients, divided in three groups: I: 31 post stroke patients; II: seven brain injury patients ; III: 12 dementia patients. Data collected before and after the speech and language therapy intervention were: staff classification in Functional Oral Intake Scale (FOIS), incidence of BCP, number of therapies and reason for their interruption. RESULTS: significant increase in the levels of FOIS scale and reduction in incidence of pneumonia in the three studied groups. In the post stroke and dementia groups the reason for therapy interruption was hospital discharge, and in the group of brain injury the reason was speech and language therapy discharge. CONCLUSION: the studied patients show increase in food consistency as for oral intake and reductions of BCP after speech and language therapy intervention related to swallowing disorders.
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Cited 6 times in SciELO
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