Microstructural and mechanical properties of powder NiCoCrAlYTa superalloy consolidated by spark plasma sintering

Author

Juarez L, F. ; Vahlas, C. ; Li, Z. ; de la T, S Diaz

Author_Institution

CIITEC-IPN Mexico, Mexico City, Mexico

fYear

2009

fDate

26-27 Sept. 2009

Firstpage

1019

Lastpage

1023

Abstract

In the present study, the spark plasma sintering technique is used to densify commercial alloy NiCoCrAlYTa. NiCoCrAlYTa powders are sintered at temperatures ranging between 1073Â°K and 1273Â°K to yield various microstructures. Full compaction is achieved in a short period of time and the overall processing duration does not exceed 30 min. Microstructure and porosity evaluations were conducted using scanning electron microscopy and chemical analysis. Two phases was identified Beta ÃŸ and Gamma Â¿ microstructure. Micro Vickers tests were carried out on the sintered specimens, the resultant properties at room temperature are very promising whereas resistance was obtained at 950Â°C.

Keywords

Vickers hardness; aluminium alloys; chemical analysis; chromium alloys; cobalt alloys; mechanical properties; nickel alloys; porosity; powders; scanning electron microscopy; sintering; superalloys; tantalum alloys; yttrium alloys; NiCoCrAlYTa; chemical analysis; mechanical property; micro Vickers tests; microstructural property; porosity evaluation; powder NiCoCrAlYTa superalloy; scanning electron microscopy; spark plasma sintering; temperature 1073 K to 1273 K; Mechanical factors; Microstructure; Plasma applications; Plasma density; Plasma materials processing; Plasma properties; Plasma temperature; Powders; Sparks; Temperature distribution; NiCoCrAlYTa; Spark plasma sintering; component;

fLanguage

English

Publisher

ieee

Conference_Titel

Science and Technology for Humanity (TIC-STH), 2009 IEEE Toronto International Conference

Conference_Location

Toronto, ON

Print_ISBN

978-1-4244-3877-8

Electronic_ISBN

978-1-4244-3878-5

Type

conf

DOI

10.1109/TIC-STH.2009.5444532

Filename

5444532