Directionally Solidified and Single-Crystal Superalloys

Author:

Harris K.1,Erickson G.L.1,Schwer R.E.1

Affiliation:

1. Cannon-Muskegon Corporation

Abstract

Abstract Directionally solidified (DS) and single-crystal (SX) superalloys and process technology are contributing to significant advances in turbine engine efficiency and durability. These gains are expected to arise from the development of higher creep strength and improved oxidation-resistant SX alloy compositions as well as from the development of SX casting and fabrication technology to utilize advanced transpiration-cooling schemes. This article provides a detailed discussion on the chemistry and castability of first- and second-generation DS and SX superalloys. It summarizes the chemistry modifications applied to MAR-M 247 to develop CMSX-2 with respect to function and objectives. The article also lists the nominal compositions of first- and second-generation DS and SX superalloys.

Publisher

ASM International

Reference32 articles.

1. Advances in Turbomachinery, Cliff Garrett Award Lecture;Pickering;Aerosp. Eng.,1986

2. Snecma Advances M88 Demonstrator;Flight Int.,1986

3. A new development in gas turbine materials - The properties and characteristics of PWA 664.

4. The development of columnar grain and single crystal high temperature materials through directional solidification

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