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Erschienen in: Rare Metals 2/2014

01.04.2014

Microstructure and stress-rupture property of an experimental single crystal Ni-base superalloy with different heat treatments

verfasst von: Jing-Yang Chen, La-Mei Cao, Ming Xue, Li-Jun Liu

Erschienen in: Rare Metals | Ausgabe 2/2014

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Abstract

The influence of heat treatment on the microstructure and stress-rupture property at 1,100 °C/140 MPa was investigated in a 5.0 wt% Re containing experimental single crystal Ni-base superalloy. The results indicate that the γ′ morphology is nearly cuboidal in the dendrite core after conventional heat treatment. The lattice misfit of alloy becomes more negative after modified heat treatment and results in more cuboidal γ′ precipitates than that after conventional heat treatment. The increased stress-rupture life after modified heat treatment is attributed to higher γ′ volume fraction, more negative lattice misfit, well-rafted structure, and narrower γ channel width.

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Metadaten
Titel
Microstructure and stress-rupture property of an experimental single crystal Ni-base superalloy with different heat treatments
verfasst von
Jing-Yang Chen
La-Mei Cao
Ming Xue
Li-Jun Liu
Publikationsdatum
01.04.2014
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 2/2014
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-013-0199-6

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