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Metallurgical Effects of Solution Heat Treatment Temperatures of Alloy Haynes™ HR-120™ for Land-Based Turbine Application

Published online by Cambridge University Press:  01 February 2011

O. Covarrubias  and
Osvaldo Elizarrarás
O. Covarrubias
Affiliation:
Frisa Aerospace SA de CV, Valentin G Rivero 200, Colonia Los Treviño, Santa Catarina, Nuevo León, México, 66150 Facultad de Ingenieria Mecanica y Electrica, UANL, Ciudad Universitaria, San Nicolas, Nuevo León, México 66500.
Osvaldo Elizarrarás
Affiliation:
Frisa Aerospace SA de CV, Valentin G Rivero 200, Colonia Los Treviño, Santa Catarina, Nuevo León, México, 66150
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Abstract

Haynes™ HR-120™ alloy is a solid-solution-strengthened heat resistant alloy. The main characteristics of this alloy are strength at elevated temperature combined with resistance to carburizing and sulfidizing environments. Typical solution heat treatment for this alloy is usually performed above 1100°C. Solution heat treatment promotes non-desired precipitates to dissolve and, if deformation parameters are adequate, re-crystallization after forging procedures. It is reported that the solution temperature can also promote non-controlled grain coarsening. This investigation summarizes results on the effect of solution heat treatment on the microstructure of forgings when it is performed at 1000°C, 1050°C and above 1100°C. The experimental conditions resemble industrial environments. The obtained results include the alloy microstructural evolution by optical microscopy and Scanning Electron Microscopy (SEM) and the effect of these heat treatments on mechanical properties such as tensile, hardness and stress-rupture properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1243: Symposium 5 – Advanced Structural Materials , 2009 , 25
Copyright
Copyright © Materials Research Society 2010

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References

REFERENCES

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