Laser-surface-alloying of the iron based superalloy Incoloy-800H with Al

Gutierrez, Alexander; Damborenea, J. de

doi:10.1007/bf01571674

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…Surface characteristics of these materials are important because corrosion or wear resistance of the materials are directly related to their surface properties. In addition, this situation indirectly affects the lifetime of the materials [1]. Various applications (turbine engines and materials processing etc) where super alloy materials are used might be critically influenced by the wear damage due to sliding movement especially at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and mechanical characterization of powder-pack boronized Incoloy A286 superalloy

Türkmen¹,

Korkmaz²

2021

Surf. Topogr.: Metrol. Prop.

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In this study, Incoloy A286 superalloy were boronized successfully by powder-pack boronizing process at 850 °C, 900 °C and 950 °C for 4 h by using a boronizing powder mixture containing H3BO3 as boron source. The thickness and morphology of the boride layer was identified by microstructural examinations. The boride layer with complex, compact and smooth morphology was formed on the surface of the samples. As a result of XRD analyses, it was determined that the compact boride layer was formed many phases such as FeB, Fe2B, Fe3B, CrB and Ni4B3 etc. It was specified that the average hardness value of the boride layer was approximately between 2400 and 3000 HV by microhardness tests. Also the graphs of friction coefficient and values of the specific wear rate were obtained by performing ball on disk wear tests. It was identified that the specific wear rate of boronized samples was approximately 9.5 times lower than that of unboronized samples.

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Section: Introductionmentioning

confidence: 99%

Microstructural and mechanical characterization of powder-pack boronized Incoloy A286 superalloy

Türkmen¹,

Korkmaz²

2021

Surf. Topogr.: Metrol. Prop.

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“…sobre isolantes (7) e tratamento térmico de superficies metálicas (8)(9)(10). O número crescente de aplicares tecnológicas importantes envolvendo a interagáo de lasers com amostras estratificadas, o nosso desejo de investigar a fundo a possibilidade de um controle paramétrico sobre a frente de calor a medida que o fluxo de calor se propaga na amostra, e o estudo das influencias dos substratos ñas temperaturas alcanzadas pelas amostras, motivou-nos a desenvolver um algoritmo que resolvesse a equagáo de difusáo de calor para este caso.…”

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Aquecimento de materiais estratificados com laser pulsado de Nd:YAG

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1998

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Resumo Em nosso trabalho examinamos o aquecimento de amostras compostas de duas e tres carnadas, condutor-isolante e condutor-condutor, com um pulso potente de láser. O comportamento transiente da distribuigáo de temperatura através da amostra foi calculado. Em nosso modelo de calculo para o processo de aquecimento levamos em conta a dependencia com a temperatura dos parámetros térmicos (difusividade, capacidade e condutividade térmica), óticos (refletividade e coeficiente de absorcao), bem como a dependencia das condicóes de contorno com o tempo e consequentemente com a temperatura. Aplicamos nossa metodología para calcular o aquecimento amostras compostas: Al-Au, Al-Ag, A1-A1 2 0 3 , Al-Au-Ag e Ag-Au-Al. Concluimos que o substrato influencia as temperaturas máximas ñas superficie exposta ao láser e a forma com que a frente de calor se propaga ñas amostras térmicamente finas.

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