3.8 Proceedings Paper

Effect of heat treatment on the microstructural characteristics of IN738 turbine blade

Journal

ECO-MATERIALS PROCESSING AND DESIGN XII
Volume 695, Issue -, Pages 405-+

Publisher

TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/MSF.695.405

Keywords

superalloy; nickel; microstructure; heat Treatment; microhardness

Funding

  1. SMBA R&D program, Republic of Korea

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It was observed that both primary and secondary gamma prime precipitates were more significantly influenced by the solid solution treatment temperature as compared to the following cooling rate. Single and duplex size precipitate distribution with different average size could be obtained through the appropriate solid solution and aging treatment. Micro-hardness test result indicated that single size distribution of gamma prime precipitates provides higher hardness than duplex size distribution.

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