期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 528, 期 10-11, 页码 3754-3760出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.01.044
关键词
EBSD; Dynamic recrystallization; Superalloy 718Plus; Recrystallization mechanism
类别
资金
- Christian Doppler Research Association in Vienna, Austria
The nickel-based superalloy Allvac (R) 718Plus (TM) is a future candidate for turbine disc applications, as this new material combines the formability and cost advantages of Alloy 718 with the higher temperature capability of Waspaloy. Due to the strong influence of the microstructure on the final mechanical properties, a fundamental knowledge of the dynamic recrystallization mechanism of Allvac (R) 718Plus (TM) is of great importance in order to develop precise microstructure evolution models for this material. Compression tests were performed at temperatures of 900 degrees C to 1050 degrees C and strain rates between 0.1 s(-1) and 10 s-1. The microstructures obtained were analyzed by electron backscatter diffraction (EBSD) to evaluate the influence of the different hot forming parameters on the dynamic softening processes of Allvac (R) 718Plus (TM). (C) 2011 Elsevier B.V. All rights reserved.
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