ICME Design of a Castable, Creep-Resistant, Single-Crystal Turbine Alloy

被引：0
|
作者：
Jiadong Gong
David Snyder
Thomas Kozmel
Chris Kern
James E. Saal
Ida Berglund
Jason Sebastian
Gregory Olson
机构：
[1] QuesTek Innovations LLC,Department of Materials Science and Engineering
[2] Northwestern University,undefined
来源：
JOM | 2017年 / 69卷
关键词：
Integrate Computational Material Engineering; Coarsen Rate Constant; Integrate Computational Material Engineering; Integrate Computational Material Engineering Approach; Liquid Buoyancy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To improve the efficiency of advanced power systems, integrated computational materials engineering (ICME) tools are being developed at QuesTek Innovations LLC for the design of high-performance alloys for gas turbine. In this article, we detail progress on the design of a low-Re, castable, creep-resistant, single-crystal Ni-based superalloy (QTSX). CALPHAD-based indicators for castability (liquid buoyancy) and creep resistance (γ′ coarsening rate constant) were simultaneously employed to predict an optimum alloy composition. Component-level QTSX trail castings have been fabricated, and characterization of the castings has demonstrated freckle-free solidification and creep resistance comparable to CMSX4 and ReneN5, which validates this accelerated ICME approach.
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页码：880 / 885
页数：5
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