Effects of Re on Microstructure of Ni<sub>3</sub>Al-Based Single Crystal Superalloys-Reference-Cited by-同舟云学术

Effects of Re on Microstructure of Ni₃Al-Based Single Crystal Superalloys

Published:2014-04 Issue: Volume:788 Page:498-503
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Chen Jing Yang¹,Xue Ming¹,Tang Xin²,Cao La Mei¹

Affiliation:

1. Beijing Institute of Aeronautical Materials

2. Beiing Institute of Aeronautical Materials (BIAM)

Abstract

The effects of Re on solidus/liquidus temperatures, solidification segregation characteristics of alloying elements, γ′ morphology and volume fraction as well as microstructural stability at 1150 °C have been investigated in two experimental Ni3Al-based single crystal superalloys with and without Re (1.0 wt%) addition. The results indicated that Re addition increased the solidus/liquidus temperatures. The segregation characteristics of Ni3Al-based single crystal superalloys were similar with Ni-based single crystal superalloys, and the solidification segregation ratios of W and Mo increased slightly due to Re addition. Meanwhile, Re addition resulted in more negative lattice misfit, more cuboidal γ′ phase and higher γ′ volume fraction. The kinetics of γ′ coarsening and rafting at 1150 °C was lowered substantially compared with the addition of Re.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.788.498.pdf

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