Publication detail

EFFECT OF GRIT BLASTING SURFACE TREATMENT ON HIGH TEMPERATURE LOW CYCLE FATIGUE LIFE OF INCONEL 713LC

ŠULÁK, I. OBRTLÍK, K. ČELKO, L. GEJDOŠ, P.

Czech title

EFFECT OF GRIT BLASTING SURFACE TREATMENT ON HIGH TEMPERATURE LOW CYCLE FATIGUE LIFE OF INCONEL 713LC

English title

EFFECT OF GRIT BLASTING SURFACE TREATMENT ON HIGH TEMPERATURE LOW CYCLE FATIGUE LIFE OF INCONEL 713LC

Type

conference paper

Language

en

Original abstract

This paper presents the results of high temperature low cycle fatigue tests carried out on Inconel 713LC. This polycrystalline nickel based superalloys is mainly used for high temperature applications such as disks, blades and vanes of gas turbine engines. These machine components are manufactured by investment casting and undergo a series of postcast processes to remove remnants of shells, oxides and other contaminants. Grit blasting is one of the most widely used and cheapest technology ensuring adequate cleaning of the surface and at the same time is used to treat the substrate surface prior to application of metalic bond coat and various protective coatings (like diffusion, overlay or thermall barier coatings). Low cycle fatigue tests were conducted on as-received and grit blasted material in fully reversed pull-push cycle in strain control mode with constant total str a on fatigue life were evaluated and parameters of Baquin and Coffin-Manson curves were obtained for both tested materials. Specimen surface and cross sections of both treated and untreated materials were analysed prior to fatigue tests and also after testing by means of optical microscopy (OM), as well as scaning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) and Vickers microhardness was measured. Fatigue degradation mechanisms was documented in both materials and negligible effect of grit blasting on low cycle parameters was discussed.

Czech abstract

This paper presents the results of high temperature low cycle fatigue tests carried out on Inconel 713LC. This polycrystalline nickel based superalloys is mainly used for high temperature applications such as disks, blades and vanes of gas turbine engines. These machine components are manufactured by investment casting and undergo a series of postcast processes to remove remnants of shells, oxides and other contaminants. Grit blasting is one of the most widely used and cheapest technology ensuring adequate cleaning of the surface and at the same time is used to treat the substrate surface prior to application of metalic bond coat and various protective coatings (like diffusion, overlay or thermall barier coatings). Low cycle fatigue tests were conducted on as-received and grit blasted material in fully reversed pull-push cycle in strain control mode with constant total str a on fatigue life were evaluated and parameters of Baquin and Coffin-Manson curves were obtained for both tested materials. Specimen surface and cross sections of both treated and untreated materials were analysed prior to fatigue tests and also after testing by means of optical microscopy (OM), as well as scaning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) and Vickers microhardness was measured. Fatigue degradation mechanisms was documented in both materials and negligible effect of grit blasting on low cycle parameters was discussed.

English abstract

This paper presents the results of high temperature low cycle fatigue tests carried out on Inconel 713LC. This polycrystalline nickel based superalloys is mainly used for high temperature applications such as disks, blades and vanes of gas turbine engines. These machine components are manufactured by investment casting and undergo a series of postcast processes to remove remnants of shells, oxides and other contaminants. Grit blasting is one of the most widely used and cheapest technology ensuring adequate cleaning of the surface and at the same time is used to treat the substrate surface prior to application of metalic bond coat and various protective coatings (like diffusion, overlay or thermall barier coatings). Low cycle fatigue tests were conducted on as-received and grit blasted material in fully reversed pull-push cycle in strain control mode with constant total str a on fatigue life were evaluated and parameters of Baquin and Coffin-Manson curves were obtained for both tested materials. Specimen surface and cross sections of both treated and untreated materials were analysed prior to fatigue tests and also after testing by means of optical microscopy (OM), as well as scaning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) and Vickers microhardness was measured. Fatigue degradation mechanisms was documented in both materials and negligible effect of grit blasting on low cycle parameters was discussed.

Keywords in English

Grit blasting; surface relief; surface microhardnes; high temperature fatigue life; Inconel 713LC

RIV year

2015

Released

28.05.2015

Location

Brno

ISBN

978-80-214-5146-9

Book

Multi Scale Design of Advanced Materials

Pages from–to

139–144

Pages count

6

BIBTEX


@inproceedings{BUT114787,
  author="Ivo {Šulák} and Karel {Obrtlík} and Ladislav {Čelko} and Pavel {Gejdoš},
  title="EFFECT OF GRIT BLASTING SURFACE TREATMENT ON HIGH TEMPERATURE LOW CYCLE FATIGUE LIFE OF INCONEL 713LC",
  booktitle="Multi Scale Design of Advanced Materials",
  year="2015",
  month="May",
  pages="139--144",
  address="Brno",
  isbn="978-80-214-5146-9"
}