Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1635862 | Transactions of Nonferrous Metals Society of China | 2015 | 7 Pages |
Abstract
The hot deformation behavior of GH3535 superalloy was investigated by hot compression tests in the temperature range of 1000-1200 °C and strain rate range of 0.01-50 sâ1. The activation energy is about 356.3 kJ/mol, and the flow curves and processing map were developed on the basis of experimental data. The processing map exhibits a stable domain which occurs in the strain rate range of 0.01-1 sâ1 at all the temperatures and a instable domain which occurs in the strain rate range of 1-50 sâ1. Microstructural observations reveal that the full dynamic recrystallization (DRX) occurs in the conditions of (1150 °C, 0.01 sâ1), (1200 °C, 0.01 sâ1) and (1200 °C, 0.1 sâ1) with different grain sizes and undissolved carbides. The flow localization and cracks occur in the regime of flow instability.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ya-qi JI, Shun-de QU, Wei-xin HAN,